some progress

node_modules/mongodb/lib/cmap/auth/auth_provider.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.AuthProvider = exports.AuthContext = void 0;
+const error_1 = require("../../error");
+/** Context used during authentication */
+class AuthContext {
+    constructor(connection, credentials, options) {
+        this.connection = connection;
+        this.credentials = credentials;
+        this.options = options;
+    }
+}
+exports.AuthContext = AuthContext;
+class AuthProvider {
+    /**
+     * Prepare the handshake document before the initial handshake.
+     *
+     * @param handshakeDoc - The document used for the initial handshake on a connection
+     * @param authContext - Context for authentication flow
+     */
+    prepare(handshakeDoc, authContext, callback) {
+        callback(undefined, handshakeDoc);
+    }
+    /**
+     * Authenticate
+     *
+     * @param context - A shared context for authentication flow
+     * @param callback - The callback to return the result from the authentication
+     */
+    auth(context, callback) {
+        // TODO(NODE-3483): Replace this with MongoMethodOverrideError
+        callback(new error_1.MongoRuntimeError('`auth` method must be overridden by subclass'));
+    }
+}
+exports.AuthProvider = AuthProvider;
+//# sourceMappingURL=auth_provider.js.map

node_modules/mongodb/lib/cmap/auth/auth_provider.js.map

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node_modules/mongodb/lib/cmap/auth/gssapi.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.resolveCname = exports.performGSSAPICanonicalizeHostName = exports.GSSAPI = exports.GSSAPICanonicalizationValue = void 0;
+const dns = require("dns");
+const deps_1 = require("../../deps");
+const error_1 = require("../../error");
+const utils_1 = require("../../utils");
+const auth_provider_1 = require("./auth_provider");
+/** @public */
+exports.GSSAPICanonicalizationValue = Object.freeze({
+    on: true,
+    off: false,
+    none: 'none',
+    forward: 'forward',
+    forwardAndReverse: 'forwardAndReverse'
+});
+class GSSAPI extends auth_provider_1.AuthProvider {
+    auth(authContext, callback) {
+        const { connection, credentials } = authContext;
+        if (credentials == null)
+            return callback(new error_1.MongoMissingCredentialsError('Credentials required for GSSAPI authentication'));
+        const { username } = credentials;
+        function externalCommand(command, cb) {
+            return connection.command((0, utils_1.ns)('$external.$cmd'), command, undefined, cb);
+        }
+        makeKerberosClient(authContext, (err, client) => {
+            if (err)
+                return callback(err);
+            if (client == null)
+                return callback(new error_1.MongoMissingDependencyError('GSSAPI client missing'));
+            client.step('', (err, payload) => {
+                if (err)
+                    return callback(err);
+                externalCommand(saslStart(payload), (err, result) => {
+                    if (err)
+                        return callback(err);
+                    if (result == null)
+                        return callback();
+                    negotiate(client, 10, result.payload, (err, payload) => {
+                        if (err)
+                            return callback(err);
+                        externalCommand(saslContinue(payload, result.conversationId), (err, result) => {
+                            if (err)
+                                return callback(err);
+                            if (result == null)
+                                return callback();
+                            finalize(client, username, result.payload, (err, payload) => {
+                                if (err)
+                                    return callback(err);
+                                externalCommand({
+                                    saslContinue: 1,
+                                    conversationId: result.conversationId,
+                                    payload
+                                }, (err, result) => {
+                                    if (err)
+                                        return callback(err);
+                                    callback(undefined, result);
+                                });
+                            });
+                        });
+                    });
+                });
+            });
+        });
+    }
+}
+exports.GSSAPI = GSSAPI;
+function makeKerberosClient(authContext, callback) {
+    const { hostAddress } = authContext.options;
+    const { credentials } = authContext;
+    if (!hostAddress || typeof hostAddress.host !== 'string' || !credentials) {
+        return callback(new error_1.MongoInvalidArgumentError('Connection must have host and port and credentials defined.'));
+    }
+    if ('kModuleError' in deps_1.Kerberos) {
+        return callback(deps_1.Kerberos['kModuleError']);
+    }
+    const { initializeClient } = deps_1.Kerberos;
+    const { username, password } = credentials;
+    const mechanismProperties = credentials.mechanismProperties;
+    const serviceName = mechanismProperties.SERVICE_NAME ?? 'mongodb';
+    performGSSAPICanonicalizeHostName(hostAddress.host, mechanismProperties, (err, host) => {
+        if (err)
+            return callback(err);
+        const initOptions = {};
+        if (password != null) {
+            Object.assign(initOptions, { user: username, password: password });
+        }
+        const spnHost = mechanismProperties.SERVICE_HOST ?? host;
+        let spn = `${serviceName}${process.platform === 'win32' ? '/' : '@'}${spnHost}`;
+        if ('SERVICE_REALM' in mechanismProperties) {
+            spn = `${spn}@${mechanismProperties.SERVICE_REALM}`;
+        }
+        initializeClient(spn, initOptions, (err, client) => {
+            // TODO(NODE-3483)
+            if (err)
+                return callback(new error_1.MongoRuntimeError(err));
+            callback(undefined, client);
+        });
+    });
+}
+function saslStart(payload) {
+    return {
+        saslStart: 1,
+        mechanism: 'GSSAPI',
+        payload,
+        autoAuthorize: 1
+    };
+}
+function saslContinue(payload, conversationId) {
+    return {
+        saslContinue: 1,
+        conversationId,
+        payload
+    };
+}
+function negotiate(client, retries, payload, callback) {
+    client.step(payload, (err, response) => {
+        // Retries exhausted, raise error
+        if (err && retries === 0)
+            return callback(err);
+        // Adjust number of retries and call step again
+        if (err)
+            return negotiate(client, retries - 1, payload, callback);
+        // Return the payload
+        callback(undefined, response || '');
+    });
+}
+function finalize(client, user, payload, callback) {
+    // GSS Client Unwrap
+    client.unwrap(payload, (err, response) => {
+        if (err)
+            return callback(err);
+        // Wrap the response
+        client.wrap(response || '', { user }, (err, wrapped) => {
+            if (err)
+                return callback(err);
+            // Return the payload
+            callback(undefined, wrapped);
+        });
+    });
+}
+function performGSSAPICanonicalizeHostName(host, mechanismProperties, callback) {
+    const mode = mechanismProperties.CANONICALIZE_HOST_NAME;
+    if (!mode || mode === exports.GSSAPICanonicalizationValue.none) {
+        return callback(undefined, host);
+    }
+    // If forward and reverse or true
+    if (mode === exports.GSSAPICanonicalizationValue.on ||
+        mode === exports.GSSAPICanonicalizationValue.forwardAndReverse) {
+        // Perform the lookup of the ip address.
+        dns.lookup(host, (error, address) => {
+            // No ip found, return the error.
+            if (error)
+                return callback(error);
+            // Perform a reverse ptr lookup on the ip address.
+            dns.resolvePtr(address, (err, results) => {
+                // This can error as ptr records may not exist for all ips. In this case
+                // fallback to a cname lookup as dns.lookup() does not return the
+                // cname.
+                if (err) {
+                    return resolveCname(host, callback);
+                }
+                // If the ptr did not error but had no results, return the host.
+                callback(undefined, results.length > 0 ? results[0] : host);
+            });
+        });
+    }
+    else {
+        // The case for forward is just to resolve the cname as dns.lookup()
+        // will not return it.
+        resolveCname(host, callback);
+    }
+}
+exports.performGSSAPICanonicalizeHostName = performGSSAPICanonicalizeHostName;
+function resolveCname(host, callback) {
+    // Attempt to resolve the host name
+    dns.resolveCname(host, (err, r) => {
+        if (err)
+            return callback(undefined, host);
+        // Get the first resolve host id
+        if (r.length > 0) {
+            return callback(undefined, r[0]);
+        }
+        callback(undefined, host);
+    });
+}
+exports.resolveCname = resolveCname;
+//# sourceMappingURL=gssapi.js.map

node_modules/mongodb/lib/cmap/auth/mongo_credentials.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MongoCredentials = void 0;
+const error_1 = require("../../error");
+const gssapi_1 = require("./gssapi");
+const providers_1 = require("./providers");
+// https://github.com/mongodb/specifications/blob/master/source/auth/auth.rst
+function getDefaultAuthMechanism(hello) {
+    if (hello) {
+        // If hello contains saslSupportedMechs, use scram-sha-256
+        // if it is available, else scram-sha-1
+        if (Array.isArray(hello.saslSupportedMechs)) {
+            return hello.saslSupportedMechs.includes(providers_1.AuthMechanism.MONGODB_SCRAM_SHA256)
+                ? providers_1.AuthMechanism.MONGODB_SCRAM_SHA256
+                : providers_1.AuthMechanism.MONGODB_SCRAM_SHA1;
+        }
+        // Fallback to legacy selection method. If wire version >= 3, use scram-sha-1
+        if (hello.maxWireVersion >= 3) {
+            return providers_1.AuthMechanism.MONGODB_SCRAM_SHA1;
+        }
+    }
+    // Default for wireprotocol < 3
+    return providers_1.AuthMechanism.MONGODB_CR;
+}
+/**
+ * A representation of the credentials used by MongoDB
+ * @public
+ */
+class MongoCredentials {
+    constructor(options) {
+        this.username = options.username;
+        this.password = options.password;
+        this.source = options.source;
+        if (!this.source && options.db) {
+            this.source = options.db;
+        }
+        this.mechanism = options.mechanism || providers_1.AuthMechanism.MONGODB_DEFAULT;
+        this.mechanismProperties = options.mechanismProperties || {};
+        if (this.mechanism.match(/MONGODB-AWS/i)) {
+            if (!this.username && process.env.AWS_ACCESS_KEY_ID) {
+                this.username = process.env.AWS_ACCESS_KEY_ID;
+            }
+            if (!this.password && process.env.AWS_SECRET_ACCESS_KEY) {
+                this.password = process.env.AWS_SECRET_ACCESS_KEY;
+            }
+            if (this.mechanismProperties.AWS_SESSION_TOKEN == null &&
+                process.env.AWS_SESSION_TOKEN != null) {
+                this.mechanismProperties = {
+                    ...this.mechanismProperties,
+                    AWS_SESSION_TOKEN: process.env.AWS_SESSION_TOKEN
+                };
+            }
+        }
+        Object.freeze(this.mechanismProperties);
+        Object.freeze(this);
+    }
+    /** Determines if two MongoCredentials objects are equivalent */
+    equals(other) {
+        return (this.mechanism === other.mechanism &&
+            this.username === other.username &&
+            this.password === other.password &&
+            this.source === other.source);
+    }
+    /**
+     * If the authentication mechanism is set to "default", resolves the authMechanism
+     * based on the server version and server supported sasl mechanisms.
+     *
+     * @param hello - A hello response from the server
+     */
+    resolveAuthMechanism(hello) {
+        // If the mechanism is not "default", then it does not need to be resolved
+        if (this.mechanism.match(/DEFAULT/i)) {
+            return new MongoCredentials({
+                username: this.username,
+                password: this.password,
+                source: this.source,
+                mechanism: getDefaultAuthMechanism(hello),
+                mechanismProperties: this.mechanismProperties
+            });
+        }
+        return this;
+    }
+    validate() {
+        if ((this.mechanism === providers_1.AuthMechanism.MONGODB_GSSAPI ||
+            this.mechanism === providers_1.AuthMechanism.MONGODB_CR ||
+            this.mechanism === providers_1.AuthMechanism.MONGODB_PLAIN ||
+            this.mechanism === providers_1.AuthMechanism.MONGODB_SCRAM_SHA1 ||
+            this.mechanism === providers_1.AuthMechanism.MONGODB_SCRAM_SHA256) &&
+            !this.username) {
+            throw new error_1.MongoMissingCredentialsError(`Username required for mechanism '${this.mechanism}'`);
+        }
+        if (this.mechanism === providers_1.AuthMechanism.MONGODB_OIDC) {
+            if (this.username) {
+                throw new error_1.MongoInvalidArgumentError(`Username not permitted for mechanism '${this.mechanism}'. Use PRINCIPAL_NAME instead.`);
+            }
+            if (this.mechanismProperties.PRINCIPAL_NAME && this.mechanismProperties.DEVICE_NAME) {
+                throw new error_1.MongoInvalidArgumentError(`PRINCIPAL_NAME and DEVICE_NAME may not be used together for mechanism '${this.mechanism}'.`);
+            }
+            if (this.mechanismProperties.DEVICE_NAME && this.mechanismProperties.DEVICE_NAME !== 'aws') {
+                throw new error_1.MongoInvalidArgumentError(`Currently only a DEVICE_NAME of 'aws' is supported for mechanism '${this.mechanism}'.`);
+            }
+            if (this.mechanismProperties.REFRESH_TOKEN_CALLBACK &&
+                !this.mechanismProperties.REQUEST_TOKEN_CALLBACK) {
+                throw new error_1.MongoInvalidArgumentError(`A REQUEST_TOKEN_CALLBACK must be provided when using a REFRESH_TOKEN_CALLBACK for mechanism '${this.mechanism}'`);
+            }
+            if (!this.mechanismProperties.DEVICE_NAME &&
+                !this.mechanismProperties.REQUEST_TOKEN_CALLBACK) {
+                throw new error_1.MongoInvalidArgumentError(`Either a DEVICE_NAME or a REQUEST_TOKEN_CALLBACK must be specified for mechanism '${this.mechanism}'.`);
+            }
+        }
+        if (providers_1.AUTH_MECHS_AUTH_SRC_EXTERNAL.has(this.mechanism)) {
+            if (this.source != null && this.source !== '$external') {
+                // TODO(NODE-3485): Replace this with a MongoAuthValidationError
+                throw new error_1.MongoAPIError(`Invalid source '${this.source}' for mechanism '${this.mechanism}' specified.`);
+            }
+        }
+        if (this.mechanism === providers_1.AuthMechanism.MONGODB_PLAIN && this.source == null) {
+            // TODO(NODE-3485): Replace this with a MongoAuthValidationError
+            throw new error_1.MongoAPIError('PLAIN Authentication Mechanism needs an auth source');
+        }
+        if (this.mechanism === providers_1.AuthMechanism.MONGODB_X509 && this.password != null) {
+            if (this.password === '') {
+                Reflect.set(this, 'password', undefined);
+                return;
+            }
+            // TODO(NODE-3485): Replace this with a MongoAuthValidationError
+            throw new error_1.MongoAPIError(`Password not allowed for mechanism MONGODB-X509`);
+        }
+        const canonicalization = this.mechanismProperties.CANONICALIZE_HOST_NAME ?? false;
+        if (!Object.values(gssapi_1.GSSAPICanonicalizationValue).includes(canonicalization)) {
+            throw new error_1.MongoAPIError(`Invalid CANONICALIZE_HOST_NAME value: ${canonicalization}`);
+        }
+    }
+    static merge(creds, options) {
+        return new MongoCredentials({
+            username: options.username ?? creds?.username ?? '',
+            password: options.password ?? creds?.password ?? '',
+            mechanism: options.mechanism ?? creds?.mechanism ?? providers_1.AuthMechanism.MONGODB_DEFAULT,
+            mechanismProperties: options.mechanismProperties ?? creds?.mechanismProperties ?? {},
+            source: options.source ?? options.db ?? creds?.source ?? 'admin'
+        });
+    }
+}
+exports.MongoCredentials = MongoCredentials;
+//# sourceMappingURL=mongo_credentials.js.map

node_modules/mongodb/lib/cmap/auth/mongo_credentials.js.map

@@ -0,0 +1 @@
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node_modules/mongodb/lib/cmap/auth/mongocr.js

@@ -0,0 +1,44 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MongoCR = void 0;
+const crypto = require("crypto");
+const error_1 = require("../../error");
+const utils_1 = require("../../utils");
+const auth_provider_1 = require("./auth_provider");
+class MongoCR extends auth_provider_1.AuthProvider {
+    auth(authContext, callback) {
+        const { connection, credentials } = authContext;
+        if (!credentials) {
+            return callback(new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.'));
+        }
+        const username = credentials.username;
+        const password = credentials.password;
+        const source = credentials.source;
+        connection.command((0, utils_1.ns)(`${source}.$cmd`), { getnonce: 1 }, undefined, (err, r) => {
+            let nonce = null;
+            let key = null;
+            // Get nonce
+            if (err == null) {
+                nonce = r.nonce;
+                // Use node md5 generator
+                let md5 = crypto.createHash('md5');
+                // Generate keys used for authentication
+                md5.update(`${username}:mongo:${password}`, 'utf8');
+                const hash_password = md5.digest('hex');
+                // Final key
+                md5 = crypto.createHash('md5');
+                md5.update(nonce + username + hash_password, 'utf8');
+                key = md5.digest('hex');
+            }
+            const authenticateCommand = {
+                authenticate: 1,
+                user: username,
+                nonce,
+                key
+            };
+            connection.command((0, utils_1.ns)(`${source}.$cmd`), authenticateCommand, undefined, callback);
+        });
+    }
+}
+exports.MongoCR = MongoCR;
+//# sourceMappingURL=mongocr.js.map

node_modules/mongodb/lib/cmap/auth/mongocr.js.map

@@ -0,0 +1 @@
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node_modules/mongodb/lib/cmap/auth/mongodb_aws.js

@@ -0,0 +1,238 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MongoDBAWS = void 0;
+const crypto = require("crypto");
+const http = require("http");
+const url = require("url");
+const BSON = require("../../bson");
+const deps_1 = require("../../deps");
+const error_1 = require("../../error");
+const utils_1 = require("../../utils");
+const auth_provider_1 = require("./auth_provider");
+const mongo_credentials_1 = require("./mongo_credentials");
+const providers_1 = require("./providers");
+const ASCII_N = 110;
+const AWS_RELATIVE_URI = 'http://169.254.170.2';
+const AWS_EC2_URI = 'http://169.254.169.254';
+const AWS_EC2_PATH = '/latest/meta-data/iam/security-credentials';
+const bsonOptions = {
+    useBigInt64: false,
+    promoteLongs: true,
+    promoteValues: true,
+    promoteBuffers: false,
+    bsonRegExp: false
+};
+class MongoDBAWS extends auth_provider_1.AuthProvider {
+    auth(authContext, callback) {
+        const { connection, credentials } = authContext;
+        if (!credentials) {
+            return callback(new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.'));
+        }
+        if ('kModuleError' in deps_1.aws4) {
+            return callback(deps_1.aws4['kModuleError']);
+        }
+        const { sign } = deps_1.aws4;
+        if ((0, utils_1.maxWireVersion)(connection) < 9) {
+            callback(new error_1.MongoCompatibilityError('MONGODB-AWS authentication requires MongoDB version 4.4 or later'));
+            return;
+        }
+        if (!credentials.username) {
+            makeTempCredentials(credentials, (err, tempCredentials) => {
+                if (err || !tempCredentials)
+                    return callback(err);
+                authContext.credentials = tempCredentials;
+                this.auth(authContext, callback);
+            });
+            return;
+        }
+        const accessKeyId = credentials.username;
+        const secretAccessKey = credentials.password;
+        const sessionToken = credentials.mechanismProperties.AWS_SESSION_TOKEN;
+        // If all three defined, include sessionToken, else include username and pass, else no credentials
+        const awsCredentials = accessKeyId && secretAccessKey && sessionToken
+            ? { accessKeyId, secretAccessKey, sessionToken }
+            : accessKeyId && secretAccessKey
+                ? { accessKeyId, secretAccessKey }
+                : undefined;
+        const db = credentials.source;
+        crypto.randomBytes(32, (err, nonce) => {
+            if (err) {
+                callback(err);
+                return;
+            }
+            const saslStart = {
+                saslStart: 1,
+                mechanism: 'MONGODB-AWS',
+                payload: BSON.serialize({ r: nonce, p: ASCII_N }, bsonOptions)
+            };
+            connection.command((0, utils_1.ns)(`${db}.$cmd`), saslStart, undefined, (err, res) => {
+                if (err)
+                    return callback(err);
+                const serverResponse = BSON.deserialize(res.payload.buffer, bsonOptions);
+                const host = serverResponse.h;
+                const serverNonce = serverResponse.s.buffer;
+                if (serverNonce.length !== 64) {
+                    callback(
+                    // TODO(NODE-3483)
+                    new error_1.MongoRuntimeError(`Invalid server nonce length ${serverNonce.length}, expected 64`));
+                    return;
+                }
+                if (!utils_1.ByteUtils.equals(serverNonce.subarray(0, nonce.byteLength), nonce)) {
+                    // throw because the serverNonce's leading 32 bytes must equal the client nonce's 32 bytes
+                    // https://github.com/mongodb/specifications/blob/875446db44aade414011731840831f38a6c668df/source/auth/auth.rst#id11
+                    // TODO(NODE-3483)
+                    callback(new error_1.MongoRuntimeError('Server nonce does not begin with client nonce'));
+                    return;
+                }
+                if (host.length < 1 || host.length > 255 || host.indexOf('..') !== -1) {
+                    // TODO(NODE-3483)
+                    callback(new error_1.MongoRuntimeError(`Server returned an invalid host: "${host}"`));
+                    return;
+                }
+                const body = 'Action=GetCallerIdentity&Version=2011-06-15';
+                const options = sign({
+                    method: 'POST',
+                    host,
+                    region: deriveRegion(serverResponse.h),
+                    service: 'sts',
+                    headers: {
+                        'Content-Type': 'application/x-www-form-urlencoded',
+                        'Content-Length': body.length,
+                        'X-MongoDB-Server-Nonce': utils_1.ByteUtils.toBase64(serverNonce),
+                        'X-MongoDB-GS2-CB-Flag': 'n'
+                    },
+                    path: '/',
+                    body
+                }, awsCredentials);
+                const payload = {
+                    a: options.headers.Authorization,
+                    d: options.headers['X-Amz-Date']
+                };
+                if (sessionToken) {
+                    payload.t = sessionToken;
+                }
+                const saslContinue = {
+                    saslContinue: 1,
+                    conversationId: 1,
+                    payload: BSON.serialize(payload, bsonOptions)
+                };
+                connection.command((0, utils_1.ns)(`${db}.$cmd`), saslContinue, undefined, callback);
+            });
+        });
+    }
+}
+exports.MongoDBAWS = MongoDBAWS;
+function makeTempCredentials(credentials, callback) {
+    function done(creds) {
+        if (!creds.AccessKeyId || !creds.SecretAccessKey || !creds.Token) {
+            callback(new error_1.MongoMissingCredentialsError('Could not obtain temporary MONGODB-AWS credentials'));
+            return;
+        }
+        callback(undefined, new mongo_credentials_1.MongoCredentials({
+            username: creds.AccessKeyId,
+            password: creds.SecretAccessKey,
+            source: credentials.source,
+            mechanism: providers_1.AuthMechanism.MONGODB_AWS,
+            mechanismProperties: {
+                AWS_SESSION_TOKEN: creds.Token
+            }
+        }));
+    }
+    const credentialProvider = (0, deps_1.getAwsCredentialProvider)();
+    // Check if the AWS credential provider from the SDK is present. If not,
+    // use the old method.
+    if ('kModuleError' in credentialProvider) {
+        // If the environment variable AWS_CONTAINER_CREDENTIALS_RELATIVE_URI
+        // is set then drivers MUST assume that it was set by an AWS ECS agent
+        if (process.env.AWS_CONTAINER_CREDENTIALS_RELATIVE_URI) {
+            request(`${AWS_RELATIVE_URI}${process.env.AWS_CONTAINER_CREDENTIALS_RELATIVE_URI}`, undefined, (err, res) => {
+                if (err)
+                    return callback(err);
+                done(res);
+            });
+            return;
+        }
+        // Otherwise assume we are on an EC2 instance
+        // get a token
+        request(`${AWS_EC2_URI}/latest/api/token`, { method: 'PUT', json: false, headers: { 'X-aws-ec2-metadata-token-ttl-seconds': 30 } }, (err, token) => {
+            if (err)
+                return callback(err);
+            // get role name
+            request(`${AWS_EC2_URI}/${AWS_EC2_PATH}`, { json: false, headers: { 'X-aws-ec2-metadata-token': token } }, (err, roleName) => {
+                if (err)
+                    return callback(err);
+                // get temp credentials
+                request(`${AWS_EC2_URI}/${AWS_EC2_PATH}/${roleName}`, { headers: { 'X-aws-ec2-metadata-token': token } }, (err, creds) => {
+                    if (err)
+                        return callback(err);
+                    done(creds);
+                });
+            });
+        });
+    }
+    else {
+        /*
+         * Creates a credential provider that will attempt to find credentials from the
+         * following sources (listed in order of precedence):
+         *
+         * - Environment variables exposed via process.env
+         * - SSO credentials from token cache
+         * - Web identity token credentials
+         * - Shared credentials and config ini files
+         * - The EC2/ECS Instance Metadata Service
+         */
+        const { fromNodeProviderChain } = credentialProvider;
+        const provider = fromNodeProviderChain();
+        provider()
+            .then((creds) => {
+            done({
+                AccessKeyId: creds.accessKeyId,
+                SecretAccessKey: creds.secretAccessKey,
+                Token: creds.sessionToken,
+                Expiration: creds.expiration
+            });
+        })
+            .catch((error) => {
+            callback(new error_1.MongoAWSError(error.message));
+        });
+    }
+}
+function deriveRegion(host) {
+    const parts = host.split('.');
+    if (parts.length === 1 || parts[1] === 'amazonaws') {
+        return 'us-east-1';
+    }
+    return parts[1];
+}
+function request(uri, _options, callback) {
+    const options = Object.assign({
+        method: 'GET',
+        timeout: 10000,
+        json: true
+    }, url.parse(uri), _options);
+    const req = http.request(options, res => {
+        res.setEncoding('utf8');
+        let data = '';
+        res.on('data', d => (data += d));
+        res.on('end', () => {
+            if (options.json === false) {
+                callback(undefined, data);
+                return;
+            }
+            try {
+                const parsed = JSON.parse(data);
+                callback(undefined, parsed);
+            }
+            catch (err) {
+                // TODO(NODE-3483)
+                callback(new error_1.MongoRuntimeError(`Invalid JSON response: "${data}"`));
+            }
+        });
+    });
+    req.on('timeout', () => {
+        req.destroy(new error_1.MongoAWSError(`AWS request to ${uri} timed out after ${options.timeout} ms`));
+    });
+    req.on('error', err => callback(err));
+    req.end();
+}
+//# sourceMappingURL=mongodb_aws.js.map

node_modules/mongodb/lib/cmap/auth/mongodb_oidc.js

@@ -0,0 +1,3 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=mongodb_oidc.js.map

node_modules/mongodb/lib/cmap/auth/mongodb_oidc.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"mongodb_oidc.js","sourceRoot":"","sources":["../../../src/cmap/auth/mongodb_oidc.ts"],"names":[],"mappings":""}

node_modules/mongodb/lib/cmap/auth/plain.js

@@ -0,0 +1,27 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Plain = void 0;
+const bson_1 = require("../../bson");
+const error_1 = require("../../error");
+const utils_1 = require("../../utils");
+const auth_provider_1 = require("./auth_provider");
+class Plain extends auth_provider_1.AuthProvider {
+    auth(authContext, callback) {
+        const { connection, credentials } = authContext;
+        if (!credentials) {
+            return callback(new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.'));
+        }
+        const username = credentials.username;
+        const password = credentials.password;
+        const payload = new bson_1.Binary(Buffer.from(`\x00${username}\x00${password}`));
+        const command = {
+            saslStart: 1,
+            mechanism: 'PLAIN',
+            payload: payload,
+            autoAuthorize: 1
+        };
+        connection.command((0, utils_1.ns)('$external.$cmd'), command, undefined, callback);
+    }
+}
+exports.Plain = Plain;
+//# sourceMappingURL=plain.js.map

node_modules/mongodb/lib/cmap/auth/plain.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"plain.js","sourceRoot":"","sources":["../../../src/cmap/auth/plain.ts"],"names":[],"mappings":";;;AAAA,qCAAoC;AACpC,uCAA2D;AAC3D,uCAA2C;AAC3C,mDAA4D;AAE5D,MAAa,KAAM,SAAQ,4BAAY;IAC5B,IAAI,CAAC,WAAwB,EAAE,QAAkB;QACxD,MAAM,EAAE,UAAU,EAAE,WAAW,EAAE,GAAG,WAAW,CAAC;QAChD,IAAI,CAAC,WAAW,EAAE;YAChB,OAAO,QAAQ,CAAC,IAAI,oCAA4B,CAAC,uCAAuC,CAAC,CAAC,CAAC;SAC5F;QACD,MAAM,QAAQ,GAAG,WAAW,CAAC,QAAQ,CAAC;QACtC,MAAM,QAAQ,GAAG,WAAW,CAAC,QAAQ,CAAC;QAEtC,MAAM,OAAO,GAAG,IAAI,aAAM,CAAC,MAAM,CAAC,IAAI,CAAC,OAAO,QAAQ,OAAO,QAAQ,EAAE,CAAC,CAAC,CAAC;QAC1E,MAAM,OAAO,GAAG;YACd,SAAS,EAAE,CAAC;YACZ,SAAS,EAAE,OAAO;YAClB,OAAO,EAAE,OAAO;YAChB,aAAa,EAAE,CAAC;SACjB,CAAC;QAEF,UAAU,CAAC,OAAO,CAAC,IAAA,UAAE,EAAC,gBAAgB,CAAC,EAAE,OAAO,EAAE,SAAS,EAAE,QAAQ,CAAC,CAAC;IACzE,CAAC;CACF;AAnBD,sBAmBC"}

node_modules/mongodb/lib/cmap/auth/providers.js

@@ -0,0 +1,24 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.AUTH_MECHS_AUTH_SRC_EXTERNAL = exports.AuthMechanism = void 0;
+/** @public */
+exports.AuthMechanism = Object.freeze({
+    MONGODB_AWS: 'MONGODB-AWS',
+    MONGODB_CR: 'MONGODB-CR',
+    MONGODB_DEFAULT: 'DEFAULT',
+    MONGODB_GSSAPI: 'GSSAPI',
+    MONGODB_PLAIN: 'PLAIN',
+    MONGODB_SCRAM_SHA1: 'SCRAM-SHA-1',
+    MONGODB_SCRAM_SHA256: 'SCRAM-SHA-256',
+    MONGODB_X509: 'MONGODB-X509',
+    /** @internal TODO: NODE-5035: Make mechanism public. */
+    MONGODB_OIDC: 'MONGODB-OIDC'
+});
+/** @internal */
+exports.AUTH_MECHS_AUTH_SRC_EXTERNAL = new Set([
+    exports.AuthMechanism.MONGODB_GSSAPI,
+    exports.AuthMechanism.MONGODB_AWS,
+    exports.AuthMechanism.MONGODB_OIDC,
+    exports.AuthMechanism.MONGODB_X509
+]);
+//# sourceMappingURL=providers.js.map

node_modules/mongodb/lib/cmap/auth/providers.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"providers.js","sourceRoot":"","sources":["../../../src/cmap/auth/providers.ts"],"names":[],"mappings":";;;AAAA,cAAc;AACD,QAAA,aAAa,GAAG,MAAM,CAAC,MAAM,CAAC;IACzC,WAAW,EAAE,aAAa;IAC1B,UAAU,EAAE,YAAY;IACxB,eAAe,EAAE,SAAS;IAC1B,cAAc,EAAE,QAAQ;IACxB,aAAa,EAAE,OAAO;IACtB,kBAAkB,EAAE,aAAa;IACjC,oBAAoB,EAAE,eAAe;IACrC,YAAY,EAAE,cAAc;IAC5B,wDAAwD;IACxD,YAAY,EAAE,cAAc;CACpB,CAAC,CAAC;AAKZ,gBAAgB;AACH,QAAA,4BAA4B,GAAG,IAAI,GAAG,CAAgB;IACjE,qBAAa,CAAC,cAAc;IAC5B,qBAAa,CAAC,WAAW;IACzB,qBAAa,CAAC,YAAY;IAC1B,qBAAa,CAAC,YAAY;CAC3B,CAAC,CAAC"}

node_modules/mongodb/lib/cmap/auth/scram.js

@@ -0,0 +1,288 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ScramSHA256 = exports.ScramSHA1 = void 0;
+const crypto = require("crypto");
+const bson_1 = require("../../bson");
+const deps_1 = require("../../deps");
+const error_1 = require("../../error");
+const utils_1 = require("../../utils");
+const auth_provider_1 = require("./auth_provider");
+const providers_1 = require("./providers");
+class ScramSHA extends auth_provider_1.AuthProvider {
+    constructor(cryptoMethod) {
+        super();
+        this.cryptoMethod = cryptoMethod || 'sha1';
+    }
+    prepare(handshakeDoc, authContext, callback) {
+        const cryptoMethod = this.cryptoMethod;
+        const credentials = authContext.credentials;
+        if (!credentials) {
+            return callback(new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.'));
+        }
+        if (cryptoMethod === 'sha256' && deps_1.saslprep == null) {
+            (0, utils_1.emitWarning)('Warning: no saslprep library specified. Passwords will not be sanitized');
+        }
+        crypto.randomBytes(24, (err, nonce) => {
+            if (err) {
+                return callback(err);
+            }
+            // store the nonce for later use
+            Object.assign(authContext, { nonce });
+            const request = Object.assign({}, handshakeDoc, {
+                speculativeAuthenticate: Object.assign(makeFirstMessage(cryptoMethod, credentials, nonce), {
+                    db: credentials.source
+                })
+            });
+            callback(undefined, request);
+        });
+    }
+    auth(authContext, callback) {
+        const response = authContext.response;
+        if (response && response.speculativeAuthenticate) {
+            continueScramConversation(this.cryptoMethod, response.speculativeAuthenticate, authContext, callback);
+            return;
+        }
+        executeScram(this.cryptoMethod, authContext, callback);
+    }
+}
+function cleanUsername(username) {
+    return username.replace('=', '=3D').replace(',', '=2C');
+}
+function clientFirstMessageBare(username, nonce) {
+    // NOTE: This is done b/c Javascript uses UTF-16, but the server is hashing in UTF-8.
+    // Since the username is not sasl-prep-d, we need to do this here.
+    return Buffer.concat([
+        Buffer.from('n=', 'utf8'),
+        Buffer.from(username, 'utf8'),
+        Buffer.from(',r=', 'utf8'),
+        Buffer.from(nonce.toString('base64'), 'utf8')
+    ]);
+}
+function makeFirstMessage(cryptoMethod, credentials, nonce) {
+    const username = cleanUsername(credentials.username);
+    const mechanism = cryptoMethod === 'sha1' ? providers_1.AuthMechanism.MONGODB_SCRAM_SHA1 : providers_1.AuthMechanism.MONGODB_SCRAM_SHA256;
+    // NOTE: This is done b/c Javascript uses UTF-16, but the server is hashing in UTF-8.
+    // Since the username is not sasl-prep-d, we need to do this here.
+    return {
+        saslStart: 1,
+        mechanism,
+        payload: new bson_1.Binary(Buffer.concat([Buffer.from('n,,', 'utf8'), clientFirstMessageBare(username, nonce)])),
+        autoAuthorize: 1,
+        options: { skipEmptyExchange: true }
+    };
+}
+function executeScram(cryptoMethod, authContext, callback) {
+    const { connection, credentials } = authContext;
+    if (!credentials) {
+        return callback(new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.'));
+    }
+    if (!authContext.nonce) {
+        return callback(new error_1.MongoInvalidArgumentError('AuthContext must contain a valid nonce property'));
+    }
+    const nonce = authContext.nonce;
+    const db = credentials.source;
+    const saslStartCmd = makeFirstMessage(cryptoMethod, credentials, nonce);
+    connection.command((0, utils_1.ns)(`${db}.$cmd`), saslStartCmd, undefined, (_err, result) => {
+        const err = resolveError(_err, result);
+        if (err) {
+            return callback(err);
+        }
+        continueScramConversation(cryptoMethod, result, authContext, callback);
+    });
+}
+function continueScramConversation(cryptoMethod, response, authContext, callback) {
+    const connection = authContext.connection;
+    const credentials = authContext.credentials;
+    if (!credentials) {
+        return callback(new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.'));
+    }
+    if (!authContext.nonce) {
+        return callback(new error_1.MongoInvalidArgumentError('Unable to continue SCRAM without valid nonce'));
+    }
+    const nonce = authContext.nonce;
+    const db = credentials.source;
+    const username = cleanUsername(credentials.username);
+    const password = credentials.password;
+    let processedPassword;
+    if (cryptoMethod === 'sha256') {
+        processedPassword = 'kModuleError' in deps_1.saslprep ? password : (0, deps_1.saslprep)(password);
+    }
+    else {
+        try {
+            processedPassword = passwordDigest(username, password);
+        }
+        catch (e) {
+            return callback(e);
+        }
+    }
+    const payload = Buffer.isBuffer(response.payload)
+        ? new bson_1.Binary(response.payload)
+        : response.payload;
+    const dict = parsePayload(payload.value());
+    const iterations = parseInt(dict.i, 10);
+    if (iterations && iterations < 4096) {
+        callback(
+        // TODO(NODE-3483)
+        new error_1.MongoRuntimeError(`Server returned an invalid iteration count ${iterations}`), false);
+        return;
+    }
+    const salt = dict.s;
+    const rnonce = dict.r;
+    if (rnonce.startsWith('nonce')) {
+        // TODO(NODE-3483)
+        callback(new error_1.MongoRuntimeError(`Server returned an invalid nonce: ${rnonce}`), false);
+        return;
+    }
+    // Set up start of proof
+    const withoutProof = `c=biws,r=${rnonce}`;
+    const saltedPassword = HI(processedPassword, Buffer.from(salt, 'base64'), iterations, cryptoMethod);
+    const clientKey = HMAC(cryptoMethod, saltedPassword, 'Client Key');
+    const serverKey = HMAC(cryptoMethod, saltedPassword, 'Server Key');
+    const storedKey = H(cryptoMethod, clientKey);
+    const authMessage = [clientFirstMessageBare(username, nonce), payload.value(), withoutProof].join(',');
+    const clientSignature = HMAC(cryptoMethod, storedKey, authMessage);
+    const clientProof = `p=${xor(clientKey, clientSignature)}`;
+    const clientFinal = [withoutProof, clientProof].join(',');
+    const serverSignature = HMAC(cryptoMethod, serverKey, authMessage);
+    const saslContinueCmd = {
+        saslContinue: 1,
+        conversationId: response.conversationId,
+        payload: new bson_1.Binary(Buffer.from(clientFinal))
+    };
+    connection.command((0, utils_1.ns)(`${db}.$cmd`), saslContinueCmd, undefined, (_err, r) => {
+        const err = resolveError(_err, r);
+        if (err) {
+            return callback(err);
+        }
+        const parsedResponse = parsePayload(r.payload.value());
+        if (!compareDigest(Buffer.from(parsedResponse.v, 'base64'), serverSignature)) {
+            callback(new error_1.MongoRuntimeError('Server returned an invalid signature'));
+            return;
+        }
+        if (!r || r.done !== false) {
+            return callback(err, r);
+        }
+        const retrySaslContinueCmd = {
+            saslContinue: 1,
+            conversationId: r.conversationId,
+            payload: Buffer.alloc(0)
+        };
+        connection.command((0, utils_1.ns)(`${db}.$cmd`), retrySaslContinueCmd, undefined, callback);
+    });
+}
+function parsePayload(payload) {
+    const dict = {};
+    const parts = payload.split(',');
+    for (let i = 0; i < parts.length; i++) {
+        const valueParts = parts[i].split('=');
+        dict[valueParts[0]] = valueParts[1];
+    }
+    return dict;
+}
+function passwordDigest(username, password) {
+    if (typeof username !== 'string') {
+        throw new error_1.MongoInvalidArgumentError('Username must be a string');
+    }
+    if (typeof password !== 'string') {
+        throw new error_1.MongoInvalidArgumentError('Password must be a string');
+    }
+    if (password.length === 0) {
+        throw new error_1.MongoInvalidArgumentError('Password cannot be empty');
+    }
+    let md5;
+    try {
+        md5 = crypto.createHash('md5');
+    }
+    catch (err) {
+        if (crypto.getFips()) {
+            // This error is (slightly) more helpful than what comes from OpenSSL directly, e.g.
+            // 'Error: error:060800C8:digital envelope routines:EVP_DigestInit_ex:disabled for FIPS'
+            throw new Error('Auth mechanism SCRAM-SHA-1 is not supported in FIPS mode');
+        }
+        throw err;
+    }
+    md5.update(`${username}:mongo:${password}`, 'utf8');
+    return md5.digest('hex');
+}
+// XOR two buffers
+function xor(a, b) {
+    if (!Buffer.isBuffer(a)) {
+        a = Buffer.from(a);
+    }
+    if (!Buffer.isBuffer(b)) {
+        b = Buffer.from(b);
+    }
+    const length = Math.max(a.length, b.length);
+    const res = [];
+    for (let i = 0; i < length; i += 1) {
+        res.push(a[i] ^ b[i]);
+    }
+    return Buffer.from(res).toString('base64');
+}
+function H(method, text) {
+    return crypto.createHash(method).update(text).digest();
+}
+function HMAC(method, key, text) {
+    return crypto.createHmac(method, key).update(text).digest();
+}
+let _hiCache = {};
+let _hiCacheCount = 0;
+function _hiCachePurge() {
+    _hiCache = {};
+    _hiCacheCount = 0;
+}
+const hiLengthMap = {
+    sha256: 32,
+    sha1: 20
+};
+function HI(data, salt, iterations, cryptoMethod) {
+    // omit the work if already generated
+    const key = [data, salt.toString('base64'), iterations].join('_');
+    if (_hiCache[key] != null) {
+        return _hiCache[key];
+    }
+    // generate the salt
+    const saltedData = crypto.pbkdf2Sync(data, salt, iterations, hiLengthMap[cryptoMethod], cryptoMethod);
+    // cache a copy to speed up the next lookup, but prevent unbounded cache growth
+    if (_hiCacheCount >= 200) {
+        _hiCachePurge();
+    }
+    _hiCache[key] = saltedData;
+    _hiCacheCount += 1;
+    return saltedData;
+}
+function compareDigest(lhs, rhs) {
+    if (lhs.length !== rhs.length) {
+        return false;
+    }
+    if (typeof crypto.timingSafeEqual === 'function') {
+        return crypto.timingSafeEqual(lhs, rhs);
+    }
+    let result = 0;
+    for (let i = 0; i < lhs.length; i++) {
+        result |= lhs[i] ^ rhs[i];
+    }
+    return result === 0;
+}
+function resolveError(err, result) {
+    if (err)
+        return err;
+    if (result) {
+        if (result.$err || result.errmsg)
+            return new error_1.MongoServerError(result);
+    }
+    return;
+}
+class ScramSHA1 extends ScramSHA {
+    constructor() {
+        super('sha1');
+    }
+}
+exports.ScramSHA1 = ScramSHA1;
+class ScramSHA256 extends ScramSHA {
+    constructor() {
+        super('sha256');
+    }
+}
+exports.ScramSHA256 = ScramSHA256;
+//# sourceMappingURL=scram.js.map

node_modules/mongodb/lib/cmap/auth/x509.js

@@ -0,0 +1,39 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.X509 = void 0;
+const error_1 = require("../../error");
+const utils_1 = require("../../utils");
+const auth_provider_1 = require("./auth_provider");
+class X509 extends auth_provider_1.AuthProvider {
+    prepare(handshakeDoc, authContext, callback) {
+        const { credentials } = authContext;
+        if (!credentials) {
+            return callback(new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.'));
+        }
+        Object.assign(handshakeDoc, {
+            speculativeAuthenticate: x509AuthenticateCommand(credentials)
+        });
+        callback(undefined, handshakeDoc);
+    }
+    auth(authContext, callback) {
+        const connection = authContext.connection;
+        const credentials = authContext.credentials;
+        if (!credentials) {
+            return callback(new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.'));
+        }
+        const response = authContext.response;
+        if (response && response.speculativeAuthenticate) {
+            return callback();
+        }
+        connection.command((0, utils_1.ns)('$external.$cmd'), x509AuthenticateCommand(credentials), undefined, callback);
+    }
+}
+exports.X509 = X509;
+function x509AuthenticateCommand(credentials) {
+    const command = { authenticate: 1, mechanism: 'MONGODB-X509' };
+    if (credentials.username) {
+        command.user = credentials.username;
+    }
+    return command;
+}
+//# sourceMappingURL=x509.js.map

node_modules/mongodb/lib/cmap/auth/x509.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"x509.js","sourceRoot":"","sources":["../../../src/cmap/auth/x509.ts"],"names":[],"mappings":";;;AACA,uCAA2D;AAC3D,uCAA2C;AAE3C,mDAA4D;AAG5D,MAAa,IAAK,SAAQ,4BAAY;IAC3B,OAAO,CACd,YAA+B,EAC/B,WAAwB,EACxB,QAAkB;QAElB,MAAM,EAAE,WAAW,EAAE,GAAG,WAAW,CAAC;QACpC,IAAI,CAAC,WAAW,EAAE;YAChB,OAAO,QAAQ,CAAC,IAAI,oCAA4B,CAAC,uCAAuC,CAAC,CAAC,CAAC;SAC5F;QACD,MAAM,CAAC,MAAM,CAAC,YAAY,EAAE;YAC1B,uBAAuB,EAAE,uBAAuB,CAAC,WAAW,CAAC;SAC9D,CAAC,CAAC;QAEH,QAAQ,CAAC,SAAS,EAAE,YAAY,CAAC,CAAC;IACpC,CAAC;IAEQ,IAAI,CAAC,WAAwB,EAAE,QAAkB;QACxD,MAAM,UAAU,GAAG,WAAW,CAAC,UAAU,CAAC;QAC1C,MAAM,WAAW,GAAG,WAAW,CAAC,WAAW,CAAC;QAC5C,IAAI,CAAC,WAAW,EAAE;YAChB,OAAO,QAAQ,CAAC,IAAI,oCAA4B,CAAC,uCAAuC,CAAC,CAAC,CAAC;SAC5F;QACD,MAAM,QAAQ,GAAG,WAAW,CAAC,QAAQ,CAAC;QAEtC,IAAI,QAAQ,IAAI,QAAQ,CAAC,uBAAuB,EAAE;YAChD,OAAO,QAAQ,EAAE,CAAC;SACnB;QAED,UAAU,CAAC,OAAO,CAChB,IAAA,UAAE,EAAC,gBAAgB,CAAC,EACpB,uBAAuB,CAAC,WAAW,CAAC,EACpC,SAAS,EACT,QAAQ,CACT,CAAC;IACJ,CAAC;CACF;AApCD,oBAoCC;AAED,SAAS,uBAAuB,CAAC,WAA6B;IAC5D,MAAM,OAAO,GAAa,EAAE,YAAY,EAAE,CAAC,EAAE,SAAS,EAAE,cAAc,EAAE,CAAC;IACzE,IAAI,WAAW,CAAC,QAAQ,EAAE;QACxB,OAAO,CAAC,IAAI,GAAG,WAAW,CAAC,QAAQ,CAAC;KACrC;IAED,OAAO,OAAO,CAAC;AACjB,CAAC"}

node_modules/mongodb/lib/cmap/command_monitoring_events.js

@@ -0,0 +1,242 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CommandFailedEvent = exports.CommandSucceededEvent = exports.CommandStartedEvent = void 0;
+const constants_1 = require("../constants");
+const utils_1 = require("../utils");
+const commands_1 = require("./commands");
+/**
+ * An event indicating the start of a given
+ * @public
+ * @category Event
+ */
+class CommandStartedEvent {
+    /**
+     * Create a started event
+     *
+     * @internal
+     * @param pool - the pool that originated the command
+     * @param command - the command
+     */
+    constructor(connection, command) {
+        const cmd = extractCommand(command);
+        const commandName = extractCommandName(cmd);
+        const { address, connectionId, serviceId } = extractConnectionDetails(connection);
+        // TODO: remove in major revision, this is not spec behavior
+        if (SENSITIVE_COMMANDS.has(commandName)) {
+            this.commandObj = {};
+            this.commandObj[commandName] = true;
+        }
+        this.address = address;
+        this.connectionId = connectionId;
+        this.serviceId = serviceId;
+        this.requestId = command.requestId;
+        this.databaseName = databaseName(command);
+        this.commandName = commandName;
+        this.command = maybeRedact(commandName, cmd, cmd);
+    }
+    /* @internal */
+    get hasServiceId() {
+        return !!this.serviceId;
+    }
+}
+exports.CommandStartedEvent = CommandStartedEvent;
+/**
+ * An event indicating the success of a given command
+ * @public
+ * @category Event
+ */
+class CommandSucceededEvent {
+    /**
+     * Create a succeeded event
+     *
+     * @internal
+     * @param pool - the pool that originated the command
+     * @param command - the command
+     * @param reply - the reply for this command from the server
+     * @param started - a high resolution tuple timestamp of when the command was first sent, to calculate duration
+     */
+    constructor(connection, command, reply, started) {
+        const cmd = extractCommand(command);
+        const commandName = extractCommandName(cmd);
+        const { address, connectionId, serviceId } = extractConnectionDetails(connection);
+        this.address = address;
+        this.connectionId = connectionId;
+        this.serviceId = serviceId;
+        this.requestId = command.requestId;
+        this.commandName = commandName;
+        this.duration = (0, utils_1.calculateDurationInMs)(started);
+        this.reply = maybeRedact(commandName, cmd, extractReply(command, reply));
+    }
+    /* @internal */
+    get hasServiceId() {
+        return !!this.serviceId;
+    }
+}
+exports.CommandSucceededEvent = CommandSucceededEvent;
+/**
+ * An event indicating the failure of a given command
+ * @public
+ * @category Event
+ */
+class CommandFailedEvent {
+    /**
+     * Create a failure event
+     *
+     * @internal
+     * @param pool - the pool that originated the command
+     * @param command - the command
+     * @param error - the generated error or a server error response
+     * @param started - a high resolution tuple timestamp of when the command was first sent, to calculate duration
+     */
+    constructor(connection, command, error, started) {
+        const cmd = extractCommand(command);
+        const commandName = extractCommandName(cmd);
+        const { address, connectionId, serviceId } = extractConnectionDetails(connection);
+        this.address = address;
+        this.connectionId = connectionId;
+        this.serviceId = serviceId;
+        this.requestId = command.requestId;
+        this.commandName = commandName;
+        this.duration = (0, utils_1.calculateDurationInMs)(started);
+        this.failure = maybeRedact(commandName, cmd, error);
+    }
+    /* @internal */
+    get hasServiceId() {
+        return !!this.serviceId;
+    }
+}
+exports.CommandFailedEvent = CommandFailedEvent;
+/** Commands that we want to redact because of the sensitive nature of their contents */
+const SENSITIVE_COMMANDS = new Set([
+    'authenticate',
+    'saslStart',
+    'saslContinue',
+    'getnonce',
+    'createUser',
+    'updateUser',
+    'copydbgetnonce',
+    'copydbsaslstart',
+    'copydb'
+]);
+const HELLO_COMMANDS = new Set(['hello', constants_1.LEGACY_HELLO_COMMAND, constants_1.LEGACY_HELLO_COMMAND_CAMEL_CASE]);
+// helper methods
+const extractCommandName = (commandDoc) => Object.keys(commandDoc)[0];
+const namespace = (command) => command.ns;
+const databaseName = (command) => command.ns.split('.')[0];
+const collectionName = (command) => command.ns.split('.')[1];
+const maybeRedact = (commandName, commandDoc, result) => SENSITIVE_COMMANDS.has(commandName) ||
+    (HELLO_COMMANDS.has(commandName) && commandDoc.speculativeAuthenticate)
+    ? {}
+    : result;
+const LEGACY_FIND_QUERY_MAP = {
+    $query: 'filter',
+    $orderby: 'sort',
+    $hint: 'hint',
+    $comment: 'comment',
+    $maxScan: 'maxScan',
+    $max: 'max',
+    $min: 'min',
+    $returnKey: 'returnKey',
+    $showDiskLoc: 'showRecordId',
+    $maxTimeMS: 'maxTimeMS',
+    $snapshot: 'snapshot'
+};
+const LEGACY_FIND_OPTIONS_MAP = {
+    numberToSkip: 'skip',
+    numberToReturn: 'batchSize',
+    returnFieldSelector: 'projection'
+};
+const OP_QUERY_KEYS = [
+    'tailable',
+    'oplogReplay',
+    'noCursorTimeout',
+    'awaitData',
+    'partial',
+    'exhaust'
+];
+/** Extract the actual command from the query, possibly up-converting if it's a legacy format */
+function extractCommand(command) {
+    if (command instanceof commands_1.Msg) {
+        return (0, utils_1.deepCopy)(command.command);
+    }
+    if (command.query?.$query) {
+        let result;
+        if (command.ns === 'admin.$cmd') {
+            // up-convert legacy command
+            result = Object.assign({}, command.query.$query);
+        }
+        else {
+            // up-convert legacy find command
+            result = { find: collectionName(command) };
+            Object.keys(LEGACY_FIND_QUERY_MAP).forEach(key => {
+                if (command.query[key] != null) {
+                    result[LEGACY_FIND_QUERY_MAP[key]] = (0, utils_1.deepCopy)(command.query[key]);
+                }
+            });
+        }
+        Object.keys(LEGACY_FIND_OPTIONS_MAP).forEach(key => {
+            const legacyKey = key;
+            if (command[legacyKey] != null) {
+                result[LEGACY_FIND_OPTIONS_MAP[legacyKey]] = (0, utils_1.deepCopy)(command[legacyKey]);
+            }
+        });
+        OP_QUERY_KEYS.forEach(key => {
+            if (command[key]) {
+                result[key] = command[key];
+            }
+        });
+        if (command.pre32Limit != null) {
+            result.limit = command.pre32Limit;
+        }
+        if (command.query.$explain) {
+            return { explain: result };
+        }
+        return result;
+    }
+    const clonedQuery = {};
+    const clonedCommand = {};
+    if (command.query) {
+        for (const k in command.query) {
+            clonedQuery[k] = (0, utils_1.deepCopy)(command.query[k]);
+        }
+        clonedCommand.query = clonedQuery;
+    }
+    for (const k in command) {
+        if (k === 'query')
+            continue;
+        clonedCommand[k] = (0, utils_1.deepCopy)(command[k]);
+    }
+    return command.query ? clonedQuery : clonedCommand;
+}
+function extractReply(command, reply) {
+    if (!reply) {
+        return reply;
+    }
+    if (command instanceof commands_1.Msg) {
+        return (0, utils_1.deepCopy)(reply.result ? reply.result : reply);
+    }
+    // is this a legacy find command?
+    if (command.query && command.query.$query != null) {
+        return {
+            ok: 1,
+            cursor: {
+                id: (0, utils_1.deepCopy)(reply.cursorId),
+                ns: namespace(command),
+                firstBatch: (0, utils_1.deepCopy)(reply.documents)
+            }
+        };
+    }
+    return (0, utils_1.deepCopy)(reply.result ? reply.result : reply);
+}
+function extractConnectionDetails(connection) {
+    let connectionId;
+    if ('id' in connection) {
+        connectionId = connection.id;
+    }
+    return {
+        address: connection.address,
+        serviceId: connection.serviceId,
+        connectionId
+    };
+}
+//# sourceMappingURL=command_monitoring_events.js.map

node_modules/mongodb/lib/cmap/commands.js

@@ -0,0 +1,487 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BinMsg = exports.Msg = exports.Response = exports.Query = void 0;
+const BSON = require("../bson");
+const error_1 = require("../error");
+const read_preference_1 = require("../read_preference");
+const utils_1 = require("../utils");
+const constants_1 = require("./wire_protocol/constants");
+// Incrementing request id
+let _requestId = 0;
+// Query flags
+const OPTS_TAILABLE_CURSOR = 2;
+const OPTS_SECONDARY = 4;
+const OPTS_OPLOG_REPLAY = 8;
+const OPTS_NO_CURSOR_TIMEOUT = 16;
+const OPTS_AWAIT_DATA = 32;
+const OPTS_EXHAUST = 64;
+const OPTS_PARTIAL = 128;
+// Response flags
+const CURSOR_NOT_FOUND = 1;
+const QUERY_FAILURE = 2;
+const SHARD_CONFIG_STALE = 4;
+const AWAIT_CAPABLE = 8;
+/**************************************************************
+ * QUERY
+ **************************************************************/
+/** @internal */
+class Query {
+    constructor(ns, query, options) {
+        // Basic options needed to be passed in
+        // TODO(NODE-3483): Replace with MongoCommandError
+        if (ns == null)
+            throw new error_1.MongoRuntimeError('Namespace must be specified for query');
+        // TODO(NODE-3483): Replace with MongoCommandError
+        if (query == null)
+            throw new error_1.MongoRuntimeError('A query document must be specified for query');
+        // Validate that we are not passing 0x00 in the collection name
+        if (ns.indexOf('\x00') !== -1) {
+            // TODO(NODE-3483): Use MongoNamespace static method
+            throw new error_1.MongoRuntimeError('Namespace cannot contain a null character');
+        }
+        // Basic options
+        this.ns = ns;
+        this.query = query;
+        // Additional options
+        this.numberToSkip = options.numberToSkip || 0;
+        this.numberToReturn = options.numberToReturn || 0;
+        this.returnFieldSelector = options.returnFieldSelector || undefined;
+        this.requestId = Query.getRequestId();
+        // special case for pre-3.2 find commands, delete ASAP
+        this.pre32Limit = options.pre32Limit;
+        // Serialization option
+        this.serializeFunctions =
+            typeof options.serializeFunctions === 'boolean' ? options.serializeFunctions : false;
+        this.ignoreUndefined =
+            typeof options.ignoreUndefined === 'boolean' ? options.ignoreUndefined : false;
+        this.maxBsonSize = options.maxBsonSize || 1024 * 1024 * 16;
+        this.checkKeys = typeof options.checkKeys === 'boolean' ? options.checkKeys : false;
+        this.batchSize = this.numberToReturn;
+        // Flags
+        this.tailable = false;
+        this.secondaryOk = typeof options.secondaryOk === 'boolean' ? options.secondaryOk : false;
+        this.oplogReplay = false;
+        this.noCursorTimeout = false;
+        this.awaitData = false;
+        this.exhaust = false;
+        this.partial = false;
+    }
+    /** Assign next request Id. */
+    incRequestId() {
+        this.requestId = _requestId++;
+    }
+    /** Peek next request Id. */
+    nextRequestId() {
+        return _requestId + 1;
+    }
+    /** Increment then return next request Id. */
+    static getRequestId() {
+        return ++_requestId;
+    }
+    // Uses a single allocated buffer for the process, avoiding multiple memory allocations
+    toBin() {
+        const buffers = [];
+        let projection = null;
+        // Set up the flags
+        let flags = 0;
+        if (this.tailable) {
+            flags |= OPTS_TAILABLE_CURSOR;
+        }
+        if (this.secondaryOk) {
+            flags |= OPTS_SECONDARY;
+        }
+        if (this.oplogReplay) {
+            flags |= OPTS_OPLOG_REPLAY;
+        }
+        if (this.noCursorTimeout) {
+            flags |= OPTS_NO_CURSOR_TIMEOUT;
+        }
+        if (this.awaitData) {
+            flags |= OPTS_AWAIT_DATA;
+        }
+        if (this.exhaust) {
+            flags |= OPTS_EXHAUST;
+        }
+        if (this.partial) {
+            flags |= OPTS_PARTIAL;
+        }
+        // If batchSize is different to this.numberToReturn
+        if (this.batchSize !== this.numberToReturn)
+            this.numberToReturn = this.batchSize;
+        // Allocate write protocol header buffer
+        const header = Buffer.alloc(4 * 4 + // Header
+            4 + // Flags
+            Buffer.byteLength(this.ns) +
+            1 + // namespace
+            4 + // numberToSkip
+            4 // numberToReturn
+        );
+        // Add header to buffers
+        buffers.push(header);
+        // Serialize the query
+        const query = BSON.serialize(this.query, {
+            checkKeys: this.checkKeys,
+            serializeFunctions: this.serializeFunctions,
+            ignoreUndefined: this.ignoreUndefined
+        });
+        // Add query document
+        buffers.push(query);
+        if (this.returnFieldSelector && Object.keys(this.returnFieldSelector).length > 0) {
+            // Serialize the projection document
+            projection = BSON.serialize(this.returnFieldSelector, {
+                checkKeys: this.checkKeys,
+                serializeFunctions: this.serializeFunctions,
+                ignoreUndefined: this.ignoreUndefined
+            });
+            // Add projection document
+            buffers.push(projection);
+        }
+        // Total message size
+        const totalLength = header.length + query.length + (projection ? projection.length : 0);
+        // Set up the index
+        let index = 4;
+        // Write total document length
+        header[3] = (totalLength >> 24) & 0xff;
+        header[2] = (totalLength >> 16) & 0xff;
+        header[1] = (totalLength >> 8) & 0xff;
+        header[0] = totalLength & 0xff;
+        // Write header information requestId
+        header[index + 3] = (this.requestId >> 24) & 0xff;
+        header[index + 2] = (this.requestId >> 16) & 0xff;
+        header[index + 1] = (this.requestId >> 8) & 0xff;
+        header[index] = this.requestId & 0xff;
+        index = index + 4;
+        // Write header information responseTo
+        header[index + 3] = (0 >> 24) & 0xff;
+        header[index + 2] = (0 >> 16) & 0xff;
+        header[index + 1] = (0 >> 8) & 0xff;
+        header[index] = 0 & 0xff;
+        index = index + 4;
+        // Write header information OP_QUERY
+        header[index + 3] = (constants_1.OP_QUERY >> 24) & 0xff;
+        header[index + 2] = (constants_1.OP_QUERY >> 16) & 0xff;
+        header[index + 1] = (constants_1.OP_QUERY >> 8) & 0xff;
+        header[index] = constants_1.OP_QUERY & 0xff;
+        index = index + 4;
+        // Write header information flags
+        header[index + 3] = (flags >> 24) & 0xff;
+        header[index + 2] = (flags >> 16) & 0xff;
+        header[index + 1] = (flags >> 8) & 0xff;
+        header[index] = flags & 0xff;
+        index = index + 4;
+        // Write collection name
+        index = index + header.write(this.ns, index, 'utf8') + 1;
+        header[index - 1] = 0;
+        // Write header information flags numberToSkip
+        header[index + 3] = (this.numberToSkip >> 24) & 0xff;
+        header[index + 2] = (this.numberToSkip >> 16) & 0xff;
+        header[index + 1] = (this.numberToSkip >> 8) & 0xff;
+        header[index] = this.numberToSkip & 0xff;
+        index = index + 4;
+        // Write header information flags numberToReturn
+        header[index + 3] = (this.numberToReturn >> 24) & 0xff;
+        header[index + 2] = (this.numberToReturn >> 16) & 0xff;
+        header[index + 1] = (this.numberToReturn >> 8) & 0xff;
+        header[index] = this.numberToReturn & 0xff;
+        index = index + 4;
+        // Return the buffers
+        return buffers;
+    }
+}
+exports.Query = Query;
+/** @internal */
+class Response {
+    constructor(message, msgHeader, msgBody, opts) {
+        this.documents = new Array(0);
+        this.parsed = false;
+        this.raw = message;
+        this.data = msgBody;
+        this.opts = opts ?? {
+            useBigInt64: false,
+            promoteLongs: true,
+            promoteValues: true,
+            promoteBuffers: false,
+            bsonRegExp: false
+        };
+        // Read the message header
+        this.length = msgHeader.length;
+        this.requestId = msgHeader.requestId;
+        this.responseTo = msgHeader.responseTo;
+        this.opCode = msgHeader.opCode;
+        this.fromCompressed = msgHeader.fromCompressed;
+        // Flag values
+        this.useBigInt64 = typeof this.opts.useBigInt64 === 'boolean' ? this.opts.useBigInt64 : false;
+        this.promoteLongs = typeof this.opts.promoteLongs === 'boolean' ? this.opts.promoteLongs : true;
+        this.promoteValues =
+            typeof this.opts.promoteValues === 'boolean' ? this.opts.promoteValues : true;
+        this.promoteBuffers =
+            typeof this.opts.promoteBuffers === 'boolean' ? this.opts.promoteBuffers : false;
+        this.bsonRegExp = typeof this.opts.bsonRegExp === 'boolean' ? this.opts.bsonRegExp : false;
+    }
+    isParsed() {
+        return this.parsed;
+    }
+    parse(options) {
+        // Don't parse again if not needed
+        if (this.parsed)
+            return;
+        options = options ?? {};
+        // Allow the return of raw documents instead of parsing
+        const raw = options.raw || false;
+        const documentsReturnedIn = options.documentsReturnedIn || null;
+        const useBigInt64 = options.useBigInt64 ?? this.opts.useBigInt64;
+        const promoteLongs = options.promoteLongs ?? this.opts.promoteLongs;
+        const promoteValues = options.promoteValues ?? this.opts.promoteValues;
+        const promoteBuffers = options.promoteBuffers ?? this.opts.promoteBuffers;
+        const bsonRegExp = options.bsonRegExp ?? this.opts.bsonRegExp;
+        let bsonSize;
+        // Set up the options
+        const _options = {
+            useBigInt64,
+            promoteLongs,
+            promoteValues,
+            promoteBuffers,
+            bsonRegExp
+        };
+        // Position within OP_REPLY at which documents start
+        // (See https://docs.mongodb.com/manual/reference/mongodb-wire-protocol/#wire-op-reply)
+        this.index = 20;
+        // Read the message body
+        this.responseFlags = this.data.readInt32LE(0);
+        this.cursorId = new BSON.Long(this.data.readInt32LE(4), this.data.readInt32LE(8));
+        this.startingFrom = this.data.readInt32LE(12);
+        this.numberReturned = this.data.readInt32LE(16);
+        // Preallocate document array
+        this.documents = new Array(this.numberReturned);
+        this.cursorNotFound = (this.responseFlags & CURSOR_NOT_FOUND) !== 0;
+        this.queryFailure = (this.responseFlags & QUERY_FAILURE) !== 0;
+        this.shardConfigStale = (this.responseFlags & SHARD_CONFIG_STALE) !== 0;
+        this.awaitCapable = (this.responseFlags & AWAIT_CAPABLE) !== 0;
+        // Parse Body
+        for (let i = 0; i < this.numberReturned; i++) {
+            bsonSize =
+                this.data[this.index] |
+                    (this.data[this.index + 1] << 8) |
+                    (this.data[this.index + 2] << 16) |
+                    (this.data[this.index + 3] << 24);
+            // If we have raw results specified slice the return document
+            if (raw) {
+                this.documents[i] = this.data.slice(this.index, this.index + bsonSize);
+            }
+            else {
+                this.documents[i] = BSON.deserialize(this.data.slice(this.index, this.index + bsonSize), _options);
+            }
+            // Adjust the index
+            this.index = this.index + bsonSize;
+        }
+        if (this.documents.length === 1 && documentsReturnedIn != null && raw) {
+            const fieldsAsRaw = {};
+            fieldsAsRaw[documentsReturnedIn] = true;
+            _options.fieldsAsRaw = fieldsAsRaw;
+            const doc = BSON.deserialize(this.documents[0], _options);
+            this.documents = [doc];
+        }
+        // Set parsed
+        this.parsed = true;
+    }
+}
+exports.Response = Response;
+// Implementation of OP_MSG spec:
+// https://github.com/mongodb/specifications/blob/master/source/message/OP_MSG.rst
+//
+// struct Section {
+//   uint8 payloadType;
+//   union payload {
+//       document  document; // payloadType == 0
+//       struct sequence { // payloadType == 1
+//           int32      size;
+//           cstring    identifier;
+//           document*  documents;
+//       };
+//   };
+// };
+// struct OP_MSG {
+//   struct MsgHeader {
+//       int32  messageLength;
+//       int32  requestID;
+//       int32  responseTo;
+//       int32  opCode = 2013;
+//   };
+//   uint32      flagBits;
+//   Section+    sections;
+//   [uint32     checksum;]
+// };
+// Msg Flags
+const OPTS_CHECKSUM_PRESENT = 1;
+const OPTS_MORE_TO_COME = 2;
+const OPTS_EXHAUST_ALLOWED = 1 << 16;
+/** @internal */
+class Msg {
+    constructor(ns, command, options) {
+        // Basic options needed to be passed in
+        if (command == null)
+            throw new error_1.MongoInvalidArgumentError('Query document must be specified for query');
+        // Basic options
+        this.ns = ns;
+        this.command = command;
+        this.command.$db = (0, utils_1.databaseNamespace)(ns);
+        if (options.readPreference && options.readPreference.mode !== read_preference_1.ReadPreference.PRIMARY) {
+            this.command.$readPreference = options.readPreference.toJSON();
+        }
+        // Ensure empty options
+        this.options = options ?? {};
+        // Additional options
+        this.requestId = options.requestId ? options.requestId : Msg.getRequestId();
+        // Serialization option
+        this.serializeFunctions =
+            typeof options.serializeFunctions === 'boolean' ? options.serializeFunctions : false;
+        this.ignoreUndefined =
+            typeof options.ignoreUndefined === 'boolean' ? options.ignoreUndefined : false;
+        this.checkKeys = typeof options.checkKeys === 'boolean' ? options.checkKeys : false;
+        this.maxBsonSize = options.maxBsonSize || 1024 * 1024 * 16;
+        // flags
+        this.checksumPresent = false;
+        this.moreToCome = options.moreToCome || false;
+        this.exhaustAllowed =
+            typeof options.exhaustAllowed === 'boolean' ? options.exhaustAllowed : false;
+    }
+    toBin() {
+        const buffers = [];
+        let flags = 0;
+        if (this.checksumPresent) {
+            flags |= OPTS_CHECKSUM_PRESENT;
+        }
+        if (this.moreToCome) {
+            flags |= OPTS_MORE_TO_COME;
+        }
+        if (this.exhaustAllowed) {
+            flags |= OPTS_EXHAUST_ALLOWED;
+        }
+        const header = Buffer.alloc(4 * 4 + // Header
+            4 // Flags
+        );
+        buffers.push(header);
+        let totalLength = header.length;
+        const command = this.command;
+        totalLength += this.makeDocumentSegment(buffers, command);
+        header.writeInt32LE(totalLength, 0); // messageLength
+        header.writeInt32LE(this.requestId, 4); // requestID
+        header.writeInt32LE(0, 8); // responseTo
+        header.writeInt32LE(constants_1.OP_MSG, 12); // opCode
+        header.writeUInt32LE(flags, 16); // flags
+        return buffers;
+    }
+    makeDocumentSegment(buffers, document) {
+        const payloadTypeBuffer = Buffer.alloc(1);
+        payloadTypeBuffer[0] = 0;
+        const documentBuffer = this.serializeBson(document);
+        buffers.push(payloadTypeBuffer);
+        buffers.push(documentBuffer);
+        return payloadTypeBuffer.length + documentBuffer.length;
+    }
+    serializeBson(document) {
+        return BSON.serialize(document, {
+            checkKeys: this.checkKeys,
+            serializeFunctions: this.serializeFunctions,
+            ignoreUndefined: this.ignoreUndefined
+        });
+    }
+    static getRequestId() {
+        _requestId = (_requestId + 1) & 0x7fffffff;
+        return _requestId;
+    }
+}
+exports.Msg = Msg;
+/** @internal */
+class BinMsg {
+    constructor(message, msgHeader, msgBody, opts) {
+        this.parsed = false;
+        this.raw = message;
+        this.data = msgBody;
+        this.opts = opts ?? {
+            useBigInt64: false,
+            promoteLongs: true,
+            promoteValues: true,
+            promoteBuffers: false,
+            bsonRegExp: false
+        };
+        // Read the message header
+        this.length = msgHeader.length;
+        this.requestId = msgHeader.requestId;
+        this.responseTo = msgHeader.responseTo;
+        this.opCode = msgHeader.opCode;
+        this.fromCompressed = msgHeader.fromCompressed;
+        // Read response flags
+        this.responseFlags = msgBody.readInt32LE(0);
+        this.checksumPresent = (this.responseFlags & OPTS_CHECKSUM_PRESENT) !== 0;
+        this.moreToCome = (this.responseFlags & OPTS_MORE_TO_COME) !== 0;
+        this.exhaustAllowed = (this.responseFlags & OPTS_EXHAUST_ALLOWED) !== 0;
+        this.useBigInt64 = typeof this.opts.useBigInt64 === 'boolean' ? this.opts.useBigInt64 : false;
+        this.promoteLongs = typeof this.opts.promoteLongs === 'boolean' ? this.opts.promoteLongs : true;
+        this.promoteValues =
+            typeof this.opts.promoteValues === 'boolean' ? this.opts.promoteValues : true;
+        this.promoteBuffers =
+            typeof this.opts.promoteBuffers === 'boolean' ? this.opts.promoteBuffers : false;
+        this.bsonRegExp = typeof this.opts.bsonRegExp === 'boolean' ? this.opts.bsonRegExp : false;
+        this.documents = [];
+    }
+    isParsed() {
+        return this.parsed;
+    }
+    parse(options) {
+        // Don't parse again if not needed
+        if (this.parsed)
+            return;
+        options = options ?? {};
+        this.index = 4;
+        // Allow the return of raw documents instead of parsing
+        const raw = options.raw || false;
+        const documentsReturnedIn = options.documentsReturnedIn || null;
+        const useBigInt64 = options.useBigInt64 ?? this.opts.useBigInt64;
+        const promoteLongs = options.promoteLongs ?? this.opts.promoteLongs;
+        const promoteValues = options.promoteValues ?? this.opts.promoteValues;
+        const promoteBuffers = options.promoteBuffers ?? this.opts.promoteBuffers;
+        const bsonRegExp = options.bsonRegExp ?? this.opts.bsonRegExp;
+        const validation = this.parseBsonSerializationOptions(options);
+        // Set up the options
+        const bsonOptions = {
+            useBigInt64,
+            promoteLongs,
+            promoteValues,
+            promoteBuffers,
+            bsonRegExp,
+            validation
+            // Due to the strictness of the BSON libraries validation option we need this cast
+        };
+        while (this.index < this.data.length) {
+            const payloadType = this.data.readUInt8(this.index++);
+            if (payloadType === 0) {
+                const bsonSize = this.data.readUInt32LE(this.index);
+                const bin = this.data.slice(this.index, this.index + bsonSize);
+                this.documents.push(raw ? bin : BSON.deserialize(bin, bsonOptions));
+                this.index += bsonSize;
+            }
+            else if (payloadType === 1) {
+                // It was decided that no driver makes use of payload type 1
+                // TODO(NODE-3483): Replace with MongoDeprecationError
+                throw new error_1.MongoRuntimeError('OP_MSG Payload Type 1 detected unsupported protocol');
+            }
+        }
+        if (this.documents.length === 1 && documentsReturnedIn != null && raw) {
+            const fieldsAsRaw = {};
+            fieldsAsRaw[documentsReturnedIn] = true;
+            bsonOptions.fieldsAsRaw = fieldsAsRaw;
+            const doc = BSON.deserialize(this.documents[0], bsonOptions);
+            this.documents = [doc];
+        }
+        this.parsed = true;
+    }
+    parseBsonSerializationOptions({ enableUtf8Validation }) {
+        if (enableUtf8Validation === false) {
+            return { utf8: false };
+        }
+        return { utf8: { writeErrors: false } };
+    }
+}
+exports.BinMsg = BinMsg;
+//# sourceMappingURL=commands.js.map

node_modules/mongodb/lib/cmap/connect.js

@@ -0,0 +1,394 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.LEGAL_TCP_SOCKET_OPTIONS = exports.LEGAL_TLS_SOCKET_OPTIONS = exports.prepareHandshakeDocument = exports.connect = void 0;
+const net = require("net");
+const socks_1 = require("socks");
+const tls = require("tls");
+const bson_1 = require("../bson");
+const constants_1 = require("../constants");
+const error_1 = require("../error");
+const utils_1 = require("../utils");
+const auth_provider_1 = require("./auth/auth_provider");
+const gssapi_1 = require("./auth/gssapi");
+const mongocr_1 = require("./auth/mongocr");
+const mongodb_aws_1 = require("./auth/mongodb_aws");
+const plain_1 = require("./auth/plain");
+const providers_1 = require("./auth/providers");
+const scram_1 = require("./auth/scram");
+const x509_1 = require("./auth/x509");
+const connection_1 = require("./connection");
+const constants_2 = require("./wire_protocol/constants");
+const AUTH_PROVIDERS = new Map([
+    [providers_1.AuthMechanism.MONGODB_AWS, new mongodb_aws_1.MongoDBAWS()],
+    [providers_1.AuthMechanism.MONGODB_CR, new mongocr_1.MongoCR()],
+    [providers_1.AuthMechanism.MONGODB_GSSAPI, new gssapi_1.GSSAPI()],
+    [providers_1.AuthMechanism.MONGODB_PLAIN, new plain_1.Plain()],
+    [providers_1.AuthMechanism.MONGODB_SCRAM_SHA1, new scram_1.ScramSHA1()],
+    [providers_1.AuthMechanism.MONGODB_SCRAM_SHA256, new scram_1.ScramSHA256()],
+    [providers_1.AuthMechanism.MONGODB_X509, new x509_1.X509()]
+]);
+function connect(options, callback) {
+    makeConnection({ ...options, existingSocket: undefined }, (err, socket) => {
+        if (err || !socket) {
+            return callback(err);
+        }
+        let ConnectionType = options.connectionType ?? connection_1.Connection;
+        if (options.autoEncrypter) {
+            ConnectionType = connection_1.CryptoConnection;
+        }
+        performInitialHandshake(new ConnectionType(socket, options), options, callback);
+    });
+}
+exports.connect = connect;
+function checkSupportedServer(hello, options) {
+    const serverVersionHighEnough = hello &&
+        (typeof hello.maxWireVersion === 'number' || hello.maxWireVersion instanceof bson_1.Int32) &&
+        hello.maxWireVersion >= constants_2.MIN_SUPPORTED_WIRE_VERSION;
+    const serverVersionLowEnough = hello &&
+        (typeof hello.minWireVersion === 'number' || hello.minWireVersion instanceof bson_1.Int32) &&
+        hello.minWireVersion <= constants_2.MAX_SUPPORTED_WIRE_VERSION;
+    if (serverVersionHighEnough) {
+        if (serverVersionLowEnough) {
+            return null;
+        }
+        const message = `Server at ${options.hostAddress} reports minimum wire version ${JSON.stringify(hello.minWireVersion)}, but this version of the Node.js Driver requires at most ${constants_2.MAX_SUPPORTED_WIRE_VERSION} (MongoDB ${constants_2.MAX_SUPPORTED_SERVER_VERSION})`;
+        return new error_1.MongoCompatibilityError(message);
+    }
+    const message = `Server at ${options.hostAddress} reports maximum wire version ${JSON.stringify(hello.maxWireVersion) ?? 0}, but this version of the Node.js Driver requires at least ${constants_2.MIN_SUPPORTED_WIRE_VERSION} (MongoDB ${constants_2.MIN_SUPPORTED_SERVER_VERSION})`;
+    return new error_1.MongoCompatibilityError(message);
+}
+function performInitialHandshake(conn, options, _callback) {
+    const callback = function (err, ret) {
+        if (err && conn) {
+            conn.destroy({ force: false });
+        }
+        _callback(err, ret);
+    };
+    const credentials = options.credentials;
+    if (credentials) {
+        if (!(credentials.mechanism === providers_1.AuthMechanism.MONGODB_DEFAULT) &&
+            !AUTH_PROVIDERS.get(credentials.mechanism)) {
+            callback(new error_1.MongoInvalidArgumentError(`AuthMechanism '${credentials.mechanism}' not supported`));
+            return;
+        }
+    }
+    const authContext = new auth_provider_1.AuthContext(conn, credentials, options);
+    prepareHandshakeDocument(authContext, (err, handshakeDoc) => {
+        if (err || !handshakeDoc) {
+            return callback(err);
+        }
+        const handshakeOptions = Object.assign({}, options);
+        if (typeof options.connectTimeoutMS === 'number') {
+            // The handshake technically is a monitoring check, so its socket timeout should be connectTimeoutMS
+            handshakeOptions.socketTimeoutMS = options.connectTimeoutMS;
+        }
+        const start = new Date().getTime();
+        conn.command((0, utils_1.ns)('admin.$cmd'), handshakeDoc, handshakeOptions, (err, response) => {
+            if (err) {
+                callback(err);
+                return;
+            }
+            if (response?.ok === 0) {
+                callback(new error_1.MongoServerError(response));
+                return;
+            }
+            if (!('isWritablePrimary' in response)) {
+                // Provide hello-style response document.
+                response.isWritablePrimary = response[constants_1.LEGACY_HELLO_COMMAND];
+            }
+            if (response.helloOk) {
+                conn.helloOk = true;
+            }
+            const supportedServerErr = checkSupportedServer(response, options);
+            if (supportedServerErr) {
+                callback(supportedServerErr);
+                return;
+            }
+            if (options.loadBalanced) {
+                if (!response.serviceId) {
+                    return callback(new error_1.MongoCompatibilityError('Driver attempted to initialize in load balancing mode, ' +
+                        'but the server does not support this mode.'));
+                }
+            }
+            // NOTE: This is metadata attached to the connection while porting away from
+            //       handshake being done in the `Server` class. Likely, it should be
+            //       relocated, or at very least restructured.
+            conn.hello = response;
+            conn.lastHelloMS = new Date().getTime() - start;
+            if (!response.arbiterOnly && credentials) {
+                // store the response on auth context
+                authContext.response = response;
+                const resolvedCredentials = credentials.resolveAuthMechanism(response);
+                const provider = AUTH_PROVIDERS.get(resolvedCredentials.mechanism);
+                if (!provider) {
+                    return callback(new error_1.MongoInvalidArgumentError(`No AuthProvider for ${resolvedCredentials.mechanism} defined.`));
+                }
+                provider.auth(authContext, err => {
+                    if (err) {
+                        if (err instanceof error_1.MongoError) {
+                            err.addErrorLabel(error_1.MongoErrorLabel.HandshakeError);
+                            if ((0, error_1.needsRetryableWriteLabel)(err, response.maxWireVersion)) {
+                                err.addErrorLabel(error_1.MongoErrorLabel.RetryableWriteError);
+                            }
+                        }
+                        return callback(err);
+                    }
+                    callback(undefined, conn);
+                });
+                return;
+            }
+            callback(undefined, conn);
+        });
+    });
+}
+/**
+ * @internal
+ *
+ * This function is only exposed for testing purposes.
+ */
+function prepareHandshakeDocument(authContext, callback) {
+    const options = authContext.options;
+    const compressors = options.compressors ? options.compressors : [];
+    const { serverApi } = authContext.connection;
+    const handshakeDoc = {
+        [serverApi?.version ? 'hello' : constants_1.LEGACY_HELLO_COMMAND]: 1,
+        helloOk: true,
+        client: options.metadata || (0, utils_1.makeClientMetadata)(options),
+        compression: compressors
+    };
+    if (options.loadBalanced === true) {
+        handshakeDoc.loadBalanced = true;
+    }
+    const credentials = authContext.credentials;
+    if (credentials) {
+        if (credentials.mechanism === providers_1.AuthMechanism.MONGODB_DEFAULT && credentials.username) {
+            handshakeDoc.saslSupportedMechs = `${credentials.source}.${credentials.username}`;
+            const provider = AUTH_PROVIDERS.get(providers_1.AuthMechanism.MONGODB_SCRAM_SHA256);
+            if (!provider) {
+                // This auth mechanism is always present.
+                return callback(new error_1.MongoInvalidArgumentError(`No AuthProvider for ${providers_1.AuthMechanism.MONGODB_SCRAM_SHA256} defined.`));
+            }
+            return provider.prepare(handshakeDoc, authContext, callback);
+        }
+        const provider = AUTH_PROVIDERS.get(credentials.mechanism);
+        if (!provider) {
+            return callback(new error_1.MongoInvalidArgumentError(`No AuthProvider for ${credentials.mechanism} defined.`));
+        }
+        return provider.prepare(handshakeDoc, authContext, callback);
+    }
+    callback(undefined, handshakeDoc);
+}
+exports.prepareHandshakeDocument = prepareHandshakeDocument;
+/** @public */
+exports.LEGAL_TLS_SOCKET_OPTIONS = [
+    'ALPNProtocols',
+    'ca',
+    'cert',
+    'checkServerIdentity',
+    'ciphers',
+    'crl',
+    'ecdhCurve',
+    'key',
+    'minDHSize',
+    'passphrase',
+    'pfx',
+    'rejectUnauthorized',
+    'secureContext',
+    'secureProtocol',
+    'servername',
+    'session'
+];
+/** @public */
+exports.LEGAL_TCP_SOCKET_OPTIONS = [
+    'family',
+    'hints',
+    'localAddress',
+    'localPort',
+    'lookup'
+];
+function parseConnectOptions(options) {
+    const hostAddress = options.hostAddress;
+    if (!hostAddress)
+        throw new error_1.MongoInvalidArgumentError('Option "hostAddress" is required');
+    const result = {};
+    for (const name of exports.LEGAL_TCP_SOCKET_OPTIONS) {
+        if (options[name] != null) {
+            result[name] = options[name];
+        }
+    }
+    if (typeof hostAddress.socketPath === 'string') {
+        result.path = hostAddress.socketPath;
+        return result;
+    }
+    else if (typeof hostAddress.host === 'string') {
+        result.host = hostAddress.host;
+        result.port = hostAddress.port;
+        return result;
+    }
+    else {
+        // This should never happen since we set up HostAddresses
+        // But if we don't throw here the socket could hang until timeout
+        // TODO(NODE-3483)
+        throw new error_1.MongoRuntimeError(`Unexpected HostAddress ${JSON.stringify(hostAddress)}`);
+    }
+}
+function parseSslOptions(options) {
+    const result = parseConnectOptions(options);
+    // Merge in valid SSL options
+    for (const name of exports.LEGAL_TLS_SOCKET_OPTIONS) {
+        if (options[name] != null) {
+            result[name] = options[name];
+        }
+    }
+    if (options.existingSocket) {
+        result.socket = options.existingSocket;
+    }
+    // Set default sni servername to be the same as host
+    if (result.servername == null && result.host && !net.isIP(result.host)) {
+        result.servername = result.host;
+    }
+    return result;
+}
+const SOCKET_ERROR_EVENT_LIST = ['error', 'close', 'timeout', 'parseError'];
+const SOCKET_ERROR_EVENTS = new Set(SOCKET_ERROR_EVENT_LIST);
+function makeConnection(options, _callback) {
+    const useTLS = options.tls ?? false;
+    const keepAlive = options.keepAlive ?? true;
+    const socketTimeoutMS = options.socketTimeoutMS ?? Reflect.get(options, 'socketTimeout') ?? 0;
+    const noDelay = options.noDelay ?? true;
+    const connectTimeoutMS = options.connectTimeoutMS ?? 30000;
+    const rejectUnauthorized = options.rejectUnauthorized ?? true;
+    const keepAliveInitialDelay = ((options.keepAliveInitialDelay ?? 120000) > socketTimeoutMS
+        ? Math.round(socketTimeoutMS / 2)
+        : options.keepAliveInitialDelay) ?? 120000;
+    const existingSocket = options.existingSocket;
+    let socket;
+    const callback = function (err, ret) {
+        if (err && socket) {
+            socket.destroy();
+        }
+        _callback(err, ret);
+    };
+    if (options.proxyHost != null) {
+        // Currently, only Socks5 is supported.
+        return makeSocks5Connection({
+            ...options,
+            connectTimeoutMS // Should always be present for Socks5
+        }, callback);
+    }
+    if (useTLS) {
+        const tlsSocket = tls.connect(parseSslOptions(options));
+        if (typeof tlsSocket.disableRenegotiation === 'function') {
+            tlsSocket.disableRenegotiation();
+        }
+        socket = tlsSocket;
+    }
+    else if (existingSocket) {
+        // In the TLS case, parseSslOptions() sets options.socket to existingSocket,
+        // so we only need to handle the non-TLS case here (where existingSocket
+        // gives us all we need out of the box).
+        socket = existingSocket;
+    }
+    else {
+        socket = net.createConnection(parseConnectOptions(options));
+    }
+    socket.setKeepAlive(keepAlive, keepAliveInitialDelay);
+    socket.setTimeout(connectTimeoutMS);
+    socket.setNoDelay(noDelay);
+    const connectEvent = useTLS ? 'secureConnect' : 'connect';
+    let cancellationHandler;
+    function errorHandler(eventName) {
+        return (err) => {
+            SOCKET_ERROR_EVENTS.forEach(event => socket.removeAllListeners(event));
+            if (cancellationHandler && options.cancellationToken) {
+                options.cancellationToken.removeListener('cancel', cancellationHandler);
+            }
+            socket.removeListener(connectEvent, connectHandler);
+            callback(connectionFailureError(eventName, err));
+        };
+    }
+    function connectHandler() {
+        SOCKET_ERROR_EVENTS.forEach(event => socket.removeAllListeners(event));
+        if (cancellationHandler && options.cancellationToken) {
+            options.cancellationToken.removeListener('cancel', cancellationHandler);
+        }
+        if ('authorizationError' in socket) {
+            if (socket.authorizationError && rejectUnauthorized) {
+                return callback(socket.authorizationError);
+            }
+        }
+        socket.setTimeout(socketTimeoutMS);
+        callback(undefined, socket);
+    }
+    SOCKET_ERROR_EVENTS.forEach(event => socket.once(event, errorHandler(event)));
+    if (options.cancellationToken) {
+        cancellationHandler = errorHandler('cancel');
+        options.cancellationToken.once('cancel', cancellationHandler);
+    }
+    if (existingSocket) {
+        process.nextTick(connectHandler);
+    }
+    else {
+        socket.once(connectEvent, connectHandler);
+    }
+}
+function makeSocks5Connection(options, callback) {
+    const hostAddress = utils_1.HostAddress.fromHostPort(options.proxyHost ?? '', // proxyHost is guaranteed to set here
+    options.proxyPort ?? 1080);
+    // First, connect to the proxy server itself:
+    makeConnection({
+        ...options,
+        hostAddress,
+        tls: false,
+        proxyHost: undefined
+    }, (err, rawSocket) => {
+        if (err) {
+            return callback(err);
+        }
+        const destination = parseConnectOptions(options);
+        if (typeof destination.host !== 'string' || typeof destination.port !== 'number') {
+            return callback(new error_1.MongoInvalidArgumentError('Can only make Socks5 connections to TCP hosts'));
+        }
+        // Then, establish the Socks5 proxy connection:
+        socks_1.SocksClient.createConnection({
+            existing_socket: rawSocket,
+            timeout: options.connectTimeoutMS,
+            command: 'connect',
+            destination: {
+                host: destination.host,
+                port: destination.port
+            },
+            proxy: {
+                // host and port are ignored because we pass existing_socket
+                host: 'iLoveJavaScript',
+                port: 0,
+                type: 5,
+                userId: options.proxyUsername || undefined,
+                password: options.proxyPassword || undefined
+            }
+        }).then(({ socket }) => {
+            // Finally, now treat the resulting duplex stream as the
+            // socket over which we send and receive wire protocol messages:
+            makeConnection({
+                ...options,
+                existingSocket: socket,
+                proxyHost: undefined
+            }, callback);
+        }, error => callback(connectionFailureError('error', error)));
+    });
+}
+function connectionFailureError(type, err) {
+    switch (type) {
+        case 'error':
+            return new error_1.MongoNetworkError(err);
+        case 'timeout':
+            return new error_1.MongoNetworkTimeoutError('connection timed out');
+        case 'close':
+            return new error_1.MongoNetworkError('connection closed');
+        case 'cancel':
+            return new error_1.MongoNetworkError('connection establishment was cancelled');
+        default:
+            return new error_1.MongoNetworkError('unknown network error');
+    }
+}
+//# sourceMappingURL=connect.js.map

node_modules/mongodb/lib/cmap/connection.js

@@ -0,0 +1,496 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.hasSessionSupport = exports.CryptoConnection = exports.Connection = void 0;
+const timers_1 = require("timers");
+const constants_1 = require("../constants");
+const error_1 = require("../error");
+const mongo_types_1 = require("../mongo_types");
+const sessions_1 = require("../sessions");
+const utils_1 = require("../utils");
+const command_monitoring_events_1 = require("./command_monitoring_events");
+const commands_1 = require("./commands");
+const message_stream_1 = require("./message_stream");
+const stream_description_1 = require("./stream_description");
+const shared_1 = require("./wire_protocol/shared");
+/** @internal */
+const kStream = Symbol('stream');
+/** @internal */
+const kQueue = Symbol('queue');
+/** @internal */
+const kMessageStream = Symbol('messageStream');
+/** @internal */
+const kGeneration = Symbol('generation');
+/** @internal */
+const kLastUseTime = Symbol('lastUseTime');
+/** @internal */
+const kClusterTime = Symbol('clusterTime');
+/** @internal */
+const kDescription = Symbol('description');
+/** @internal */
+const kHello = Symbol('hello');
+/** @internal */
+const kAutoEncrypter = Symbol('autoEncrypter');
+/** @internal */
+const kDelayedTimeoutId = Symbol('delayedTimeoutId');
+const INVALID_QUEUE_SIZE = 'Connection internal queue contains more than 1 operation description';
+/** @internal */
+class Connection extends mongo_types_1.TypedEventEmitter {
+    constructor(stream, options) {
+        super();
+        this.id = options.id;
+        this.address = streamIdentifier(stream, options);
+        this.socketTimeoutMS = options.socketTimeoutMS ?? 0;
+        this.monitorCommands = options.monitorCommands;
+        this.serverApi = options.serverApi;
+        this.closed = false;
+        this[kHello] = null;
+        this[kClusterTime] = null;
+        this[kDescription] = new stream_description_1.StreamDescription(this.address, options);
+        this[kGeneration] = options.generation;
+        this[kLastUseTime] = (0, utils_1.now)();
+        // setup parser stream and message handling
+        this[kQueue] = new Map();
+        this[kMessageStream] = new message_stream_1.MessageStream({
+            ...options,
+            maxBsonMessageSize: this.hello?.maxBsonMessageSize
+        });
+        this[kStream] = stream;
+        this[kDelayedTimeoutId] = null;
+        this[kMessageStream].on('message', message => this.onMessage(message));
+        this[kMessageStream].on('error', error => this.onError(error));
+        this[kStream].on('close', () => this.onClose());
+        this[kStream].on('timeout', () => this.onTimeout());
+        this[kStream].on('error', () => {
+            /* ignore errors, listen to `close` instead */
+        });
+        // hook the message stream up to the passed in stream
+        this[kStream].pipe(this[kMessageStream]);
+        this[kMessageStream].pipe(this[kStream]);
+    }
+    get description() {
+        return this[kDescription];
+    }
+    get hello() {
+        return this[kHello];
+    }
+    // the `connect` method stores the result of the handshake hello on the connection
+    set hello(response) {
+        this[kDescription].receiveResponse(response);
+        this[kDescription] = Object.freeze(this[kDescription]);
+        // TODO: remove this, and only use the `StreamDescription` in the future
+        this[kHello] = response;
+    }
+    // Set the whether the message stream is for a monitoring connection.
+    set isMonitoringConnection(value) {
+        this[kMessageStream].isMonitoringConnection = value;
+    }
+    get isMonitoringConnection() {
+        return this[kMessageStream].isMonitoringConnection;
+    }
+    get serviceId() {
+        return this.hello?.serviceId;
+    }
+    get loadBalanced() {
+        return this.description.loadBalanced;
+    }
+    get generation() {
+        return this[kGeneration] || 0;
+    }
+    set generation(generation) {
+        this[kGeneration] = generation;
+    }
+    get idleTime() {
+        return (0, utils_1.calculateDurationInMs)(this[kLastUseTime]);
+    }
+    get clusterTime() {
+        return this[kClusterTime];
+    }
+    get stream() {
+        return this[kStream];
+    }
+    markAvailable() {
+        this[kLastUseTime] = (0, utils_1.now)();
+    }
+    onError(error) {
+        this.cleanup(true, error);
+    }
+    onClose() {
+        const message = `connection ${this.id} to ${this.address} closed`;
+        this.cleanup(true, new error_1.MongoNetworkError(message));
+    }
+    onTimeout() {
+        this[kDelayedTimeoutId] = (0, timers_1.setTimeout)(() => {
+            const message = `connection ${this.id} to ${this.address} timed out`;
+            const beforeHandshake = this.hello == null;
+            this.cleanup(true, new error_1.MongoNetworkTimeoutError(message, { beforeHandshake }));
+        }, 1).unref(); // No need for this timer to hold the event loop open
+    }
+    onMessage(message) {
+        const delayedTimeoutId = this[kDelayedTimeoutId];
+        if (delayedTimeoutId != null) {
+            (0, timers_1.clearTimeout)(delayedTimeoutId);
+            this[kDelayedTimeoutId] = null;
+        }
+        // always emit the message, in case we are streaming
+        this.emit('message', message);
+        let operationDescription = this[kQueue].get(message.responseTo);
+        if (!operationDescription && this.isMonitoringConnection) {
+            // This is how we recover when the initial hello's requestId is not
+            // the responseTo when hello responses have been skipped:
+            // First check if the map is of invalid size
+            if (this[kQueue].size > 1) {
+                this.cleanup(true, new error_1.MongoRuntimeError(INVALID_QUEUE_SIZE));
+            }
+            else {
+                // Get the first orphaned operation description.
+                const entry = this[kQueue].entries().next();
+                if (entry.value != null) {
+                    const [requestId, orphaned] = entry.value;
+                    // If the orphaned operation description exists then set it.
+                    operationDescription = orphaned;
+                    // Remove the entry with the bad request id from the queue.
+                    this[kQueue].delete(requestId);
+                }
+            }
+        }
+        if (!operationDescription) {
+            return;
+        }
+        const callback = operationDescription.cb;
+        // SERVER-45775: For exhaust responses we should be able to use the same requestId to
+        // track response, however the server currently synthetically produces remote requests
+        // making the `responseTo` change on each response
+        this[kQueue].delete(message.responseTo);
+        if ('moreToCome' in message && message.moreToCome) {
+            // If the operation description check above does find an orphaned
+            // description and sets the operationDescription then this line will put one
+            // back in the queue with the correct requestId and will resolve not being able
+            // to find the next one via the responseTo of the next streaming hello.
+            this[kQueue].set(message.requestId, operationDescription);
+        }
+        else if (operationDescription.socketTimeoutOverride) {
+            this[kStream].setTimeout(this.socketTimeoutMS);
+        }
+        try {
+            // Pass in the entire description because it has BSON parsing options
+            message.parse(operationDescription);
+        }
+        catch (err) {
+            // If this error is generated by our own code, it will already have the correct class applied
+            // if it is not, then it is coming from a catastrophic data parse failure or the BSON library
+            // in either case, it should not be wrapped
+            callback(err);
+            return;
+        }
+        if (message.documents[0]) {
+            const document = message.documents[0];
+            const session = operationDescription.session;
+            if (session) {
+                (0, sessions_1.updateSessionFromResponse)(session, document);
+            }
+            if (document.$clusterTime) {
+                this[kClusterTime] = document.$clusterTime;
+                this.emit(Connection.CLUSTER_TIME_RECEIVED, document.$clusterTime);
+            }
+            if (operationDescription.command) {
+                if (document.writeConcernError) {
+                    callback(new error_1.MongoWriteConcernError(document.writeConcernError, document), document);
+                    return;
+                }
+                if (document.ok === 0 || document.$err || document.errmsg || document.code) {
+                    callback(new error_1.MongoServerError(document));
+                    return;
+                }
+            }
+            else {
+                // Pre 3.2 support
+                if (document.ok === 0 || document.$err || document.errmsg) {
+                    callback(new error_1.MongoServerError(document));
+                    return;
+                }
+            }
+        }
+        callback(undefined, message.documents[0]);
+    }
+    destroy(options, callback) {
+        if (this.closed) {
+            process.nextTick(() => callback?.());
+            return;
+        }
+        if (typeof callback === 'function') {
+            this.once('close', () => process.nextTick(() => callback()));
+        }
+        // load balanced mode requires that these listeners remain on the connection
+        // after cleanup on timeouts, errors or close so we remove them before calling
+        // cleanup.
+        this.removeAllListeners(Connection.PINNED);
+        this.removeAllListeners(Connection.UNPINNED);
+        const message = `connection ${this.id} to ${this.address} closed`;
+        this.cleanup(options.force, new error_1.MongoNetworkError(message));
+    }
+    /**
+     * A method that cleans up the connection.  When `force` is true, this method
+     * forcibly destroys the socket.
+     *
+     * If an error is provided, any in-flight operations will be closed with the error.
+     *
+     * This method does nothing if the connection is already closed.
+     */
+    cleanup(force, error) {
+        if (this.closed) {
+            return;
+        }
+        this.closed = true;
+        const completeCleanup = () => {
+            for (const op of this[kQueue].values()) {
+                op.cb(error);
+            }
+            this[kQueue].clear();
+            this.emit(Connection.CLOSE);
+        };
+        this[kStream].removeAllListeners();
+        this[kMessageStream].removeAllListeners();
+        this[kMessageStream].destroy();
+        if (force) {
+            this[kStream].destroy();
+            completeCleanup();
+            return;
+        }
+        if (!this[kStream].writableEnded) {
+            this[kStream].end(() => {
+                this[kStream].destroy();
+                completeCleanup();
+            });
+        }
+        else {
+            completeCleanup();
+        }
+    }
+    command(ns, cmd, options, callback) {
+        const readPreference = (0, shared_1.getReadPreference)(cmd, options);
+        const shouldUseOpMsg = supportsOpMsg(this);
+        const session = options?.session;
+        let clusterTime = this.clusterTime;
+        let finalCmd = Object.assign({}, cmd);
+        if (this.serverApi) {
+            const { version, strict, deprecationErrors } = this.serverApi;
+            finalCmd.apiVersion = version;
+            if (strict != null)
+                finalCmd.apiStrict = strict;
+            if (deprecationErrors != null)
+                finalCmd.apiDeprecationErrors = deprecationErrors;
+        }
+        if (hasSessionSupport(this) && session) {
+            if (session.clusterTime &&
+                clusterTime &&
+                session.clusterTime.clusterTime.greaterThan(clusterTime.clusterTime)) {
+                clusterTime = session.clusterTime;
+            }
+            const err = (0, sessions_1.applySession)(session, finalCmd, options);
+            if (err) {
+                return callback(err);
+            }
+        }
+        // if we have a known cluster time, gossip it
+        if (clusterTime) {
+            finalCmd.$clusterTime = clusterTime;
+        }
+        if ((0, shared_1.isSharded)(this) && !shouldUseOpMsg && readPreference && readPreference.mode !== 'primary') {
+            finalCmd = {
+                $query: finalCmd,
+                $readPreference: readPreference.toJSON()
+            };
+        }
+        const commandOptions = Object.assign({
+            command: true,
+            numberToSkip: 0,
+            numberToReturn: -1,
+            checkKeys: false,
+            // This value is not overridable
+            secondaryOk: readPreference.secondaryOk()
+        }, options);
+        const cmdNs = `${ns.db}.$cmd`;
+        const message = shouldUseOpMsg
+            ? new commands_1.Msg(cmdNs, finalCmd, commandOptions)
+            : new commands_1.Query(cmdNs, finalCmd, commandOptions);
+        try {
+            write(this, message, commandOptions, callback);
+        }
+        catch (err) {
+            callback(err);
+        }
+    }
+}
+exports.Connection = Connection;
+/** @event */
+Connection.COMMAND_STARTED = constants_1.COMMAND_STARTED;
+/** @event */
+Connection.COMMAND_SUCCEEDED = constants_1.COMMAND_SUCCEEDED;
+/** @event */
+Connection.COMMAND_FAILED = constants_1.COMMAND_FAILED;
+/** @event */
+Connection.CLUSTER_TIME_RECEIVED = constants_1.CLUSTER_TIME_RECEIVED;
+/** @event */
+Connection.CLOSE = constants_1.CLOSE;
+/** @event */
+Connection.MESSAGE = constants_1.MESSAGE;
+/** @event */
+Connection.PINNED = constants_1.PINNED;
+/** @event */
+Connection.UNPINNED = constants_1.UNPINNED;
+/** @internal */
+class CryptoConnection extends Connection {
+    constructor(stream, options) {
+        super(stream, options);
+        this[kAutoEncrypter] = options.autoEncrypter;
+    }
+    /** @internal @override */
+    command(ns, cmd, options, callback) {
+        const autoEncrypter = this[kAutoEncrypter];
+        if (!autoEncrypter) {
+            return callback(new error_1.MongoMissingDependencyError('No AutoEncrypter available for encryption'));
+        }
+        const serverWireVersion = (0, utils_1.maxWireVersion)(this);
+        if (serverWireVersion === 0) {
+            // This means the initial handshake hasn't happened yet
+            return super.command(ns, cmd, options, callback);
+        }
+        if (serverWireVersion < 8) {
+            callback(new error_1.MongoCompatibilityError('Auto-encryption requires a minimum MongoDB version of 4.2'));
+            return;
+        }
+        // Save sort or indexKeys based on the command being run
+        // the encrypt API serializes our JS objects to BSON to pass to the native code layer
+        // and then deserializes the encrypted result, the protocol level components
+        // of the command (ex. sort) are then converted to JS objects potentially losing
+        // import key order information. These fields are never encrypted so we can save the values
+        // from before the encryption and replace them after encryption has been performed
+        const sort = cmd.find || cmd.findAndModify ? cmd.sort : null;
+        const indexKeys = cmd.createIndexes
+            ? cmd.indexes.map((index) => index.key)
+            : null;
+        autoEncrypter.encrypt(ns.toString(), cmd, options, (err, encrypted) => {
+            if (err || encrypted == null) {
+                callback(err, null);
+                return;
+            }
+            // Replace the saved values
+            if (sort != null && (cmd.find || cmd.findAndModify)) {
+                encrypted.sort = sort;
+            }
+            if (indexKeys != null && cmd.createIndexes) {
+                for (const [offset, index] of indexKeys.entries()) {
+                    encrypted.indexes[offset].key = index;
+                }
+            }
+            super.command(ns, encrypted, options, (err, response) => {
+                if (err || response == null) {
+                    callback(err, response);
+                    return;
+                }
+                autoEncrypter.decrypt(response, options, callback);
+            });
+        });
+    }
+}
+exports.CryptoConnection = CryptoConnection;
+/** @internal */
+function hasSessionSupport(conn) {
+    const description = conn.description;
+    return description.logicalSessionTimeoutMinutes != null || !!description.loadBalanced;
+}
+exports.hasSessionSupport = hasSessionSupport;
+function supportsOpMsg(conn) {
+    const description = conn.description;
+    if (description == null) {
+        return false;
+    }
+    return (0, utils_1.maxWireVersion)(conn) >= 6 && !description.__nodejs_mock_server__;
+}
+function streamIdentifier(stream, options) {
+    if (options.proxyHost) {
+        // If proxy options are specified, the properties of `stream` itself
+        // will not accurately reflect what endpoint this is connected to.
+        return options.hostAddress.toString();
+    }
+    const { remoteAddress, remotePort } = stream;
+    if (typeof remoteAddress === 'string' && typeof remotePort === 'number') {
+        return utils_1.HostAddress.fromHostPort(remoteAddress, remotePort).toString();
+    }
+    return (0, utils_1.uuidV4)().toString('hex');
+}
+function write(conn, command, options, callback) {
+    options = options ?? {};
+    const operationDescription = {
+        requestId: command.requestId,
+        cb: callback,
+        session: options.session,
+        noResponse: typeof options.noResponse === 'boolean' ? options.noResponse : false,
+        documentsReturnedIn: options.documentsReturnedIn,
+        command: !!options.command,
+        // for BSON parsing
+        useBigInt64: typeof options.useBigInt64 === 'boolean' ? options.useBigInt64 : false,
+        promoteLongs: typeof options.promoteLongs === 'boolean' ? options.promoteLongs : true,
+        promoteValues: typeof options.promoteValues === 'boolean' ? options.promoteValues : true,
+        promoteBuffers: typeof options.promoteBuffers === 'boolean' ? options.promoteBuffers : false,
+        bsonRegExp: typeof options.bsonRegExp === 'boolean' ? options.bsonRegExp : false,
+        enableUtf8Validation: typeof options.enableUtf8Validation === 'boolean' ? options.enableUtf8Validation : true,
+        raw: typeof options.raw === 'boolean' ? options.raw : false,
+        started: 0
+    };
+    if (conn[kDescription] && conn[kDescription].compressor) {
+        operationDescription.agreedCompressor = conn[kDescription].compressor;
+        if (conn[kDescription].zlibCompressionLevel) {
+            operationDescription.zlibCompressionLevel = conn[kDescription].zlibCompressionLevel;
+        }
+    }
+    if (typeof options.socketTimeoutMS === 'number') {
+        operationDescription.socketTimeoutOverride = true;
+        conn[kStream].setTimeout(options.socketTimeoutMS);
+    }
+    // if command monitoring is enabled we need to modify the callback here
+    if (conn.monitorCommands) {
+        conn.emit(Connection.COMMAND_STARTED, new command_monitoring_events_1.CommandStartedEvent(conn, command));
+        operationDescription.started = (0, utils_1.now)();
+        operationDescription.cb = (err, reply) => {
+            // Command monitoring spec states that if ok is 1, then we must always emit
+            // a command suceeded event, even if there's an error. Write concern errors
+            // will have an ok: 1 in their reply.
+            if (err && reply?.ok !== 1) {
+                conn.emit(Connection.COMMAND_FAILED, new command_monitoring_events_1.CommandFailedEvent(conn, command, err, operationDescription.started));
+            }
+            else {
+                if (reply && (reply.ok === 0 || reply.$err)) {
+                    conn.emit(Connection.COMMAND_FAILED, new command_monitoring_events_1.CommandFailedEvent(conn, command, reply, operationDescription.started));
+                }
+                else {
+                    conn.emit(Connection.COMMAND_SUCCEEDED, new command_monitoring_events_1.CommandSucceededEvent(conn, command, reply, operationDescription.started));
+                }
+            }
+            if (typeof callback === 'function') {
+                // Since we're passing through the reply with the write concern error now, we
+                // need it not to be provided to the original callback in this case so
+                // retryability does not get tricked into thinking the command actually
+                // succeeded.
+                callback(err, err instanceof error_1.MongoWriteConcernError ? undefined : reply);
+            }
+        };
+    }
+    if (!operationDescription.noResponse) {
+        conn[kQueue].set(operationDescription.requestId, operationDescription);
+    }
+    try {
+        conn[kMessageStream].writeCommand(command, operationDescription);
+    }
+    catch (e) {
+        if (!operationDescription.noResponse) {
+            conn[kQueue].delete(operationDescription.requestId);
+            operationDescription.cb(e);
+            return;
+        }
+    }
+    if (operationDescription.noResponse) {
+        operationDescription.cb();
+    }
+}
+//# sourceMappingURL=connection.js.map

node_modules/mongodb/lib/cmap/connection_pool.js

@@ -0,0 +1,591 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ConnectionPool = exports.PoolState = void 0;
+const timers_1 = require("timers");
+const constants_1 = require("../constants");
+const error_1 = require("../error");
+const mongo_types_1 = require("../mongo_types");
+const utils_1 = require("../utils");
+const connect_1 = require("./connect");
+const connection_1 = require("./connection");
+const connection_pool_events_1 = require("./connection_pool_events");
+const errors_1 = require("./errors");
+const metrics_1 = require("./metrics");
+/** @internal */
+const kServer = Symbol('server');
+/** @internal */
+const kConnections = Symbol('connections');
+/** @internal */
+const kPending = Symbol('pending');
+/** @internal */
+const kCheckedOut = Symbol('checkedOut');
+/** @internal */
+const kMinPoolSizeTimer = Symbol('minPoolSizeTimer');
+/** @internal */
+const kGeneration = Symbol('generation');
+/** @internal */
+const kServiceGenerations = Symbol('serviceGenerations');
+/** @internal */
+const kConnectionCounter = Symbol('connectionCounter');
+/** @internal */
+const kCancellationToken = Symbol('cancellationToken');
+/** @internal */
+const kWaitQueue = Symbol('waitQueue');
+/** @internal */
+const kCancelled = Symbol('cancelled');
+/** @internal */
+const kMetrics = Symbol('metrics');
+/** @internal */
+const kProcessingWaitQueue = Symbol('processingWaitQueue');
+/** @internal */
+const kPoolState = Symbol('poolState');
+/** @internal */
+exports.PoolState = Object.freeze({
+    paused: 'paused',
+    ready: 'ready',
+    closed: 'closed'
+});
+/**
+ * A pool of connections which dynamically resizes, and emit events related to pool activity
+ * @internal
+ */
+class ConnectionPool extends mongo_types_1.TypedEventEmitter {
+    constructor(server, options) {
+        super();
+        this.options = Object.freeze({
+            ...options,
+            connectionType: connection_1.Connection,
+            maxPoolSize: options.maxPoolSize ?? 100,
+            minPoolSize: options.minPoolSize ?? 0,
+            maxConnecting: options.maxConnecting ?? 2,
+            maxIdleTimeMS: options.maxIdleTimeMS ?? 0,
+            waitQueueTimeoutMS: options.waitQueueTimeoutMS ?? 0,
+            minPoolSizeCheckFrequencyMS: options.minPoolSizeCheckFrequencyMS ?? 100,
+            autoEncrypter: options.autoEncrypter,
+            metadata: options.metadata
+        });
+        if (this.options.minPoolSize > this.options.maxPoolSize) {
+            throw new error_1.MongoInvalidArgumentError('Connection pool minimum size must not be greater than maximum pool size');
+        }
+        this[kPoolState] = exports.PoolState.paused;
+        this[kServer] = server;
+        this[kConnections] = new utils_1.List();
+        this[kPending] = 0;
+        this[kCheckedOut] = new Set();
+        this[kMinPoolSizeTimer] = undefined;
+        this[kGeneration] = 0;
+        this[kServiceGenerations] = new Map();
+        this[kConnectionCounter] = (0, utils_1.makeCounter)(1);
+        this[kCancellationToken] = new mongo_types_1.CancellationToken();
+        this[kCancellationToken].setMaxListeners(Infinity);
+        this[kWaitQueue] = new utils_1.List();
+        this[kMetrics] = new metrics_1.ConnectionPoolMetrics();
+        this[kProcessingWaitQueue] = false;
+        process.nextTick(() => {
+            this.emit(ConnectionPool.CONNECTION_POOL_CREATED, new connection_pool_events_1.ConnectionPoolCreatedEvent(this));
+        });
+    }
+    /** The address of the endpoint the pool is connected to */
+    get address() {
+        return this.options.hostAddress.toString();
+    }
+    /**
+     * Check if the pool has been closed
+     *
+     * TODO(NODE-3263): We can remove this property once shell no longer needs it
+     */
+    get closed() {
+        return this[kPoolState] === exports.PoolState.closed;
+    }
+    /** An integer representing the SDAM generation of the pool */
+    get generation() {
+        return this[kGeneration];
+    }
+    /** An integer expressing how many total connections (available + pending + in use) the pool currently has */
+    get totalConnectionCount() {
+        return (this.availableConnectionCount + this.pendingConnectionCount + this.currentCheckedOutCount);
+    }
+    /** An integer expressing how many connections are currently available in the pool. */
+    get availableConnectionCount() {
+        return this[kConnections].length;
+    }
+    get pendingConnectionCount() {
+        return this[kPending];
+    }
+    get currentCheckedOutCount() {
+        return this[kCheckedOut].size;
+    }
+    get waitQueueSize() {
+        return this[kWaitQueue].length;
+    }
+    get loadBalanced() {
+        return this.options.loadBalanced;
+    }
+    get serviceGenerations() {
+        return this[kServiceGenerations];
+    }
+    get serverError() {
+        return this[kServer].description.error;
+    }
+    /**
+     * This is exposed ONLY for use in mongosh, to enable
+     * killing all connections if a user quits the shell with
+     * operations in progress.
+     *
+     * This property may be removed as a part of NODE-3263.
+     */
+    get checkedOutConnections() {
+        return this[kCheckedOut];
+    }
+    /**
+     * Get the metrics information for the pool when a wait queue timeout occurs.
+     */
+    waitQueueErrorMetrics() {
+        return this[kMetrics].info(this.options.maxPoolSize);
+    }
+    /**
+     * Set the pool state to "ready"
+     */
+    ready() {
+        if (this[kPoolState] !== exports.PoolState.paused) {
+            return;
+        }
+        this[kPoolState] = exports.PoolState.ready;
+        this.emit(ConnectionPool.CONNECTION_POOL_READY, new connection_pool_events_1.ConnectionPoolReadyEvent(this));
+        (0, timers_1.clearTimeout)(this[kMinPoolSizeTimer]);
+        this.ensureMinPoolSize();
+    }
+    /**
+     * Check a connection out of this pool. The connection will continue to be tracked, but no reference to it
+     * will be held by the pool. This means that if a connection is checked out it MUST be checked back in or
+     * explicitly destroyed by the new owner.
+     */
+    checkOut(callback) {
+        this.emit(ConnectionPool.CONNECTION_CHECK_OUT_STARTED, new connection_pool_events_1.ConnectionCheckOutStartedEvent(this));
+        const waitQueueMember = { callback };
+        const waitQueueTimeoutMS = this.options.waitQueueTimeoutMS;
+        if (waitQueueTimeoutMS) {
+            waitQueueMember.timer = (0, timers_1.setTimeout)(() => {
+                waitQueueMember[kCancelled] = true;
+                waitQueueMember.timer = undefined;
+                this.emit(ConnectionPool.CONNECTION_CHECK_OUT_FAILED, new connection_pool_events_1.ConnectionCheckOutFailedEvent(this, 'timeout'));
+                waitQueueMember.callback(new errors_1.WaitQueueTimeoutError(this.loadBalanced
+                    ? this.waitQueueErrorMetrics()
+                    : 'Timed out while checking out a connection from connection pool', this.address));
+            }, waitQueueTimeoutMS);
+        }
+        this[kWaitQueue].push(waitQueueMember);
+        process.nextTick(() => this.processWaitQueue());
+    }
+    /**
+     * Check a connection into the pool.
+     *
+     * @param connection - The connection to check in
+     */
+    checkIn(connection) {
+        if (!this[kCheckedOut].has(connection)) {
+            return;
+        }
+        const poolClosed = this.closed;
+        const stale = this.connectionIsStale(connection);
+        const willDestroy = !!(poolClosed || stale || connection.closed);
+        if (!willDestroy) {
+            connection.markAvailable();
+            this[kConnections].unshift(connection);
+        }
+        this[kCheckedOut].delete(connection);
+        this.emit(ConnectionPool.CONNECTION_CHECKED_IN, new connection_pool_events_1.ConnectionCheckedInEvent(this, connection));
+        if (willDestroy) {
+            const reason = connection.closed ? 'error' : poolClosed ? 'poolClosed' : 'stale';
+            this.destroyConnection(connection, reason);
+        }
+        process.nextTick(() => this.processWaitQueue());
+    }
+    /**
+     * Clear the pool
+     *
+     * Pool reset is handled by incrementing the pool's generation count. Any existing connection of a
+     * previous generation will eventually be pruned during subsequent checkouts.
+     */
+    clear(options = {}) {
+        if (this.closed) {
+            return;
+        }
+        // handle load balanced case
+        if (this.loadBalanced) {
+            const { serviceId } = options;
+            if (!serviceId) {
+                throw new error_1.MongoRuntimeError('ConnectionPool.clear() called in load balanced mode with no serviceId.');
+            }
+            const sid = serviceId.toHexString();
+            const generation = this.serviceGenerations.get(sid);
+            // Only need to worry if the generation exists, since it should
+            // always be there but typescript needs the check.
+            if (generation == null) {
+                throw new error_1.MongoRuntimeError('Service generations are required in load balancer mode.');
+            }
+            else {
+                // Increment the generation for the service id.
+                this.serviceGenerations.set(sid, generation + 1);
+            }
+            this.emit(ConnectionPool.CONNECTION_POOL_CLEARED, new connection_pool_events_1.ConnectionPoolClearedEvent(this, { serviceId }));
+            return;
+        }
+        // handle non load-balanced case
+        const interruptInUseConnections = options.interruptInUseConnections ?? false;
+        const oldGeneration = this[kGeneration];
+        this[kGeneration] += 1;
+        const alreadyPaused = this[kPoolState] === exports.PoolState.paused;
+        this[kPoolState] = exports.PoolState.paused;
+        this.clearMinPoolSizeTimer();
+        if (!alreadyPaused) {
+            this.emit(ConnectionPool.CONNECTION_POOL_CLEARED, new connection_pool_events_1.ConnectionPoolClearedEvent(this, { interruptInUseConnections }));
+        }
+        if (interruptInUseConnections) {
+            process.nextTick(() => this.interruptInUseConnections(oldGeneration));
+        }
+        this.processWaitQueue();
+    }
+    /**
+     * Closes all stale in-use connections in the pool with a resumable PoolClearedOnNetworkError.
+     *
+     * Only connections where `connection.generation <= minGeneration` are killed.
+     */
+    interruptInUseConnections(minGeneration) {
+        for (const connection of this[kCheckedOut]) {
+            if (connection.generation <= minGeneration) {
+                this.checkIn(connection);
+                connection.onError(new errors_1.PoolClearedOnNetworkError(this));
+            }
+        }
+    }
+    close(_options, _cb) {
+        let options = _options;
+        const callback = (_cb ?? _options);
+        if (typeof options === 'function') {
+            options = {};
+        }
+        options = Object.assign({ force: false }, options);
+        if (this.closed) {
+            return callback();
+        }
+        // immediately cancel any in-flight connections
+        this[kCancellationToken].emit('cancel');
+        // end the connection counter
+        if (typeof this[kConnectionCounter].return === 'function') {
+            this[kConnectionCounter].return(undefined);
+        }
+        this[kPoolState] = exports.PoolState.closed;
+        this.clearMinPoolSizeTimer();
+        this.processWaitQueue();
+        (0, utils_1.eachAsync)(this[kConnections].toArray(), (conn, cb) => {
+            this.emit(ConnectionPool.CONNECTION_CLOSED, new connection_pool_events_1.ConnectionClosedEvent(this, conn, 'poolClosed'));
+            conn.destroy({ force: !!options.force }, cb);
+        }, err => {
+            this[kConnections].clear();
+            this.emit(ConnectionPool.CONNECTION_POOL_CLOSED, new connection_pool_events_1.ConnectionPoolClosedEvent(this));
+            callback(err);
+        });
+    }
+    /**
+     * Runs a lambda with an implicitly checked out connection, checking that connection back in when the lambda
+     * has completed by calling back.
+     *
+     * NOTE: please note the required signature of `fn`
+     *
+     * @remarks When in load balancer mode, connections can be pinned to cursors or transactions.
+     *   In these cases we pass the connection in to this method to ensure it is used and a new
+     *   connection is not checked out.
+     *
+     * @param conn - A pinned connection for use in load balancing mode.
+     * @param fn - A function which operates on a managed connection
+     * @param callback - The original callback
+     */
+    withConnection(conn, fn, callback) {
+        if (conn) {
+            // use the provided connection, and do _not_ check it in after execution
+            fn(undefined, conn, (fnErr, result) => {
+                if (typeof callback === 'function') {
+                    if (fnErr) {
+                        callback(fnErr);
+                    }
+                    else {
+                        callback(undefined, result);
+                    }
+                }
+            });
+            return;
+        }
+        this.checkOut((err, conn) => {
+            // don't callback with `err` here, we might want to act upon it inside `fn`
+            fn(err, conn, (fnErr, result) => {
+                if (typeof callback === 'function') {
+                    if (fnErr) {
+                        callback(fnErr);
+                    }
+                    else {
+                        callback(undefined, result);
+                    }
+                }
+                if (conn) {
+                    this.checkIn(conn);
+                }
+            });
+        });
+    }
+    /** Clear the min pool size timer */
+    clearMinPoolSizeTimer() {
+        const minPoolSizeTimer = this[kMinPoolSizeTimer];
+        if (minPoolSizeTimer) {
+            (0, timers_1.clearTimeout)(minPoolSizeTimer);
+        }
+    }
+    destroyConnection(connection, reason) {
+        this.emit(ConnectionPool.CONNECTION_CLOSED, new connection_pool_events_1.ConnectionClosedEvent(this, connection, reason));
+        // destroy the connection
+        process.nextTick(() => connection.destroy({ force: false }));
+    }
+    connectionIsStale(connection) {
+        const serviceId = connection.serviceId;
+        if (this.loadBalanced && serviceId) {
+            const sid = serviceId.toHexString();
+            const generation = this.serviceGenerations.get(sid);
+            return connection.generation !== generation;
+        }
+        return connection.generation !== this[kGeneration];
+    }
+    connectionIsIdle(connection) {
+        return !!(this.options.maxIdleTimeMS && connection.idleTime > this.options.maxIdleTimeMS);
+    }
+    /**
+     * Destroys a connection if the connection is perished.
+     *
+     * @returns `true` if the connection was destroyed, `false` otherwise.
+     */
+    destroyConnectionIfPerished(connection) {
+        const isStale = this.connectionIsStale(connection);
+        const isIdle = this.connectionIsIdle(connection);
+        if (!isStale && !isIdle && !connection.closed) {
+            return false;
+        }
+        const reason = connection.closed ? 'error' : isStale ? 'stale' : 'idle';
+        this.destroyConnection(connection, reason);
+        return true;
+    }
+    createConnection(callback) {
+        const connectOptions = {
+            ...this.options,
+            id: this[kConnectionCounter].next().value,
+            generation: this[kGeneration],
+            cancellationToken: this[kCancellationToken]
+        };
+        this[kPending]++;
+        // This is our version of a "virtual" no-I/O connection as the spec requires
+        this.emit(ConnectionPool.CONNECTION_CREATED, new connection_pool_events_1.ConnectionCreatedEvent(this, { id: connectOptions.id }));
+        (0, connect_1.connect)(connectOptions, (err, connection) => {
+            if (err || !connection) {
+                this[kPending]--;
+                this.emit(ConnectionPool.CONNECTION_CLOSED, new connection_pool_events_1.ConnectionClosedEvent(this, { id: connectOptions.id, serviceId: undefined }, 'error'));
+                if (err instanceof error_1.MongoNetworkError || err instanceof error_1.MongoServerError) {
+                    err.connectionGeneration = connectOptions.generation;
+                }
+                callback(err ?? new error_1.MongoRuntimeError('Connection creation failed without error'));
+                return;
+            }
+            // The pool might have closed since we started trying to create a connection
+            if (this[kPoolState] !== exports.PoolState.ready) {
+                this[kPending]--;
+                connection.destroy({ force: true });
+                callback(this.closed ? new errors_1.PoolClosedError(this) : new errors_1.PoolClearedError(this));
+                return;
+            }
+            // forward all events from the connection to the pool
+            for (const event of [...constants_1.APM_EVENTS, connection_1.Connection.CLUSTER_TIME_RECEIVED]) {
+                connection.on(event, (e) => this.emit(event, e));
+            }
+            if (this.loadBalanced) {
+                connection.on(connection_1.Connection.PINNED, pinType => this[kMetrics].markPinned(pinType));
+                connection.on(connection_1.Connection.UNPINNED, pinType => this[kMetrics].markUnpinned(pinType));
+                const serviceId = connection.serviceId;
+                if (serviceId) {
+                    let generation;
+                    const sid = serviceId.toHexString();
+                    if ((generation = this.serviceGenerations.get(sid))) {
+                        connection.generation = generation;
+                    }
+                    else {
+                        this.serviceGenerations.set(sid, 0);
+                        connection.generation = 0;
+                    }
+                }
+            }
+            connection.markAvailable();
+            this.emit(ConnectionPool.CONNECTION_READY, new connection_pool_events_1.ConnectionReadyEvent(this, connection));
+            this[kPending]--;
+            callback(undefined, connection);
+            return;
+        });
+    }
+    ensureMinPoolSize() {
+        const minPoolSize = this.options.minPoolSize;
+        if (this[kPoolState] !== exports.PoolState.ready || minPoolSize === 0) {
+            return;
+        }
+        this[kConnections].prune(connection => this.destroyConnectionIfPerished(connection));
+        if (this.totalConnectionCount < minPoolSize &&
+            this.pendingConnectionCount < this.options.maxConnecting) {
+            // NOTE: ensureMinPoolSize should not try to get all the pending
+            // connection permits because that potentially delays the availability of
+            // the connection to a checkout request
+            this.createConnection((err, connection) => {
+                if (err) {
+                    this[kServer].handleError(err);
+                }
+                if (!err && connection) {
+                    this[kConnections].push(connection);
+                    process.nextTick(() => this.processWaitQueue());
+                }
+                if (this[kPoolState] === exports.PoolState.ready) {
+                    (0, timers_1.clearTimeout)(this[kMinPoolSizeTimer]);
+                    this[kMinPoolSizeTimer] = (0, timers_1.setTimeout)(() => this.ensureMinPoolSize(), this.options.minPoolSizeCheckFrequencyMS);
+                }
+            });
+        }
+        else {
+            (0, timers_1.clearTimeout)(this[kMinPoolSizeTimer]);
+            this[kMinPoolSizeTimer] = (0, timers_1.setTimeout)(() => this.ensureMinPoolSize(), this.options.minPoolSizeCheckFrequencyMS);
+        }
+    }
+    processWaitQueue() {
+        if (this[kProcessingWaitQueue]) {
+            return;
+        }
+        this[kProcessingWaitQueue] = true;
+        while (this.waitQueueSize) {
+            const waitQueueMember = this[kWaitQueue].first();
+            if (!waitQueueMember) {
+                this[kWaitQueue].shift();
+                continue;
+            }
+            if (waitQueueMember[kCancelled]) {
+                this[kWaitQueue].shift();
+                continue;
+            }
+            if (this[kPoolState] !== exports.PoolState.ready) {
+                const reason = this.closed ? 'poolClosed' : 'connectionError';
+                const error = this.closed ? new errors_1.PoolClosedError(this) : new errors_1.PoolClearedError(this);
+                this.emit(ConnectionPool.CONNECTION_CHECK_OUT_FAILED, new connection_pool_events_1.ConnectionCheckOutFailedEvent(this, reason));
+                if (waitQueueMember.timer) {
+                    (0, timers_1.clearTimeout)(waitQueueMember.timer);
+                }
+                this[kWaitQueue].shift();
+                waitQueueMember.callback(error);
+                continue;
+            }
+            if (!this.availableConnectionCount) {
+                break;
+            }
+            const connection = this[kConnections].shift();
+            if (!connection) {
+                break;
+            }
+            if (!this.destroyConnectionIfPerished(connection)) {
+                this[kCheckedOut].add(connection);
+                this.emit(ConnectionPool.CONNECTION_CHECKED_OUT, new connection_pool_events_1.ConnectionCheckedOutEvent(this, connection));
+                if (waitQueueMember.timer) {
+                    (0, timers_1.clearTimeout)(waitQueueMember.timer);
+                }
+                this[kWaitQueue].shift();
+                waitQueueMember.callback(undefined, connection);
+            }
+        }
+        const { maxPoolSize, maxConnecting } = this.options;
+        while (this.waitQueueSize > 0 &&
+            this.pendingConnectionCount < maxConnecting &&
+            (maxPoolSize === 0 || this.totalConnectionCount < maxPoolSize)) {
+            const waitQueueMember = this[kWaitQueue].shift();
+            if (!waitQueueMember || waitQueueMember[kCancelled]) {
+                continue;
+            }
+            this.createConnection((err, connection) => {
+                if (waitQueueMember[kCancelled]) {
+                    if (!err && connection) {
+                        this[kConnections].push(connection);
+                    }
+                }
+                else {
+                    if (err) {
+                        this.emit(ConnectionPool.CONNECTION_CHECK_OUT_FAILED, new connection_pool_events_1.ConnectionCheckOutFailedEvent(this, 'connectionError'));
+                    }
+                    else if (connection) {
+                        this[kCheckedOut].add(connection);
+                        this.emit(ConnectionPool.CONNECTION_CHECKED_OUT, new connection_pool_events_1.ConnectionCheckedOutEvent(this, connection));
+                    }
+                    if (waitQueueMember.timer) {
+                        (0, timers_1.clearTimeout)(waitQueueMember.timer);
+                    }
+                    waitQueueMember.callback(err, connection);
+                }
+                process.nextTick(() => this.processWaitQueue());
+            });
+        }
+        this[kProcessingWaitQueue] = false;
+    }
+}
+exports.ConnectionPool = ConnectionPool;
+/**
+ * Emitted when the connection pool is created.
+ * @event
+ */
+ConnectionPool.CONNECTION_POOL_CREATED = constants_1.CONNECTION_POOL_CREATED;
+/**
+ * Emitted once when the connection pool is closed
+ * @event
+ */
+ConnectionPool.CONNECTION_POOL_CLOSED = constants_1.CONNECTION_POOL_CLOSED;
+/**
+ * Emitted each time the connection pool is cleared and it's generation incremented
+ * @event
+ */
+ConnectionPool.CONNECTION_POOL_CLEARED = constants_1.CONNECTION_POOL_CLEARED;
+/**
+ * Emitted each time the connection pool is marked ready
+ * @event
+ */
+ConnectionPool.CONNECTION_POOL_READY = constants_1.CONNECTION_POOL_READY;
+/**
+ * Emitted when a connection is created.
+ * @event
+ */
+ConnectionPool.CONNECTION_CREATED = constants_1.CONNECTION_CREATED;
+/**
+ * Emitted when a connection becomes established, and is ready to use
+ * @event
+ */
+ConnectionPool.CONNECTION_READY = constants_1.CONNECTION_READY;
+/**
+ * Emitted when a connection is closed
+ * @event
+ */
+ConnectionPool.CONNECTION_CLOSED = constants_1.CONNECTION_CLOSED;
+/**
+ * Emitted when an attempt to check out a connection begins
+ * @event
+ */
+ConnectionPool.CONNECTION_CHECK_OUT_STARTED = constants_1.CONNECTION_CHECK_OUT_STARTED;
+/**
+ * Emitted when an attempt to check out a connection fails
+ * @event
+ */
+ConnectionPool.CONNECTION_CHECK_OUT_FAILED = constants_1.CONNECTION_CHECK_OUT_FAILED;
+/**
+ * Emitted each time a connection is successfully checked out of the connection pool
+ * @event
+ */
+ConnectionPool.CONNECTION_CHECKED_OUT = constants_1.CONNECTION_CHECKED_OUT;
+/**
+ * Emitted each time a connection is successfully checked into the connection pool
+ * @event
+ */
+ConnectionPool.CONNECTION_CHECKED_IN = constants_1.CONNECTION_CHECKED_IN;
+//# sourceMappingURL=connection_pool.js.map

node_modules/mongodb/lib/cmap/connection_pool_events.js

@@ -0,0 +1,160 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ConnectionPoolClearedEvent = exports.ConnectionCheckedInEvent = exports.ConnectionCheckedOutEvent = exports.ConnectionCheckOutFailedEvent = exports.ConnectionCheckOutStartedEvent = exports.ConnectionClosedEvent = exports.ConnectionReadyEvent = exports.ConnectionCreatedEvent = exports.ConnectionPoolClosedEvent = exports.ConnectionPoolReadyEvent = exports.ConnectionPoolCreatedEvent = exports.ConnectionPoolMonitoringEvent = void 0;
+/**
+ * The base export class for all monitoring events published from the connection pool
+ * @public
+ * @category Event
+ */
+class ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool) {
+        this.time = new Date();
+        this.address = pool.address;
+    }
+}
+exports.ConnectionPoolMonitoringEvent = ConnectionPoolMonitoringEvent;
+/**
+ * An event published when a connection pool is created
+ * @public
+ * @category Event
+ */
+class ConnectionPoolCreatedEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool) {
+        super(pool);
+        this.options = pool.options;
+    }
+}
+exports.ConnectionPoolCreatedEvent = ConnectionPoolCreatedEvent;
+/**
+ * An event published when a connection pool is ready
+ * @public
+ * @category Event
+ */
+class ConnectionPoolReadyEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool) {
+        super(pool);
+    }
+}
+exports.ConnectionPoolReadyEvent = ConnectionPoolReadyEvent;
+/**
+ * An event published when a connection pool is closed
+ * @public
+ * @category Event
+ */
+class ConnectionPoolClosedEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool) {
+        super(pool);
+    }
+}
+exports.ConnectionPoolClosedEvent = ConnectionPoolClosedEvent;
+/**
+ * An event published when a connection pool creates a new connection
+ * @public
+ * @category Event
+ */
+class ConnectionCreatedEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool, connection) {
+        super(pool);
+        this.connectionId = connection.id;
+    }
+}
+exports.ConnectionCreatedEvent = ConnectionCreatedEvent;
+/**
+ * An event published when a connection is ready for use
+ * @public
+ * @category Event
+ */
+class ConnectionReadyEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool, connection) {
+        super(pool);
+        this.connectionId = connection.id;
+    }
+}
+exports.ConnectionReadyEvent = ConnectionReadyEvent;
+/**
+ * An event published when a connection is closed
+ * @public
+ * @category Event
+ */
+class ConnectionClosedEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool, connection, reason) {
+        super(pool);
+        this.connectionId = connection.id;
+        this.reason = reason || 'unknown';
+        this.serviceId = connection.serviceId;
+    }
+}
+exports.ConnectionClosedEvent = ConnectionClosedEvent;
+/**
+ * An event published when a request to check a connection out begins
+ * @public
+ * @category Event
+ */
+class ConnectionCheckOutStartedEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool) {
+        super(pool);
+    }
+}
+exports.ConnectionCheckOutStartedEvent = ConnectionCheckOutStartedEvent;
+/**
+ * An event published when a request to check a connection out fails
+ * @public
+ * @category Event
+ */
+class ConnectionCheckOutFailedEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool, reason) {
+        super(pool);
+        this.reason = reason;
+    }
+}
+exports.ConnectionCheckOutFailedEvent = ConnectionCheckOutFailedEvent;
+/**
+ * An event published when a connection is checked out of the connection pool
+ * @public
+ * @category Event
+ */
+class ConnectionCheckedOutEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool, connection) {
+        super(pool);
+        this.connectionId = connection.id;
+    }
+}
+exports.ConnectionCheckedOutEvent = ConnectionCheckedOutEvent;
+/**
+ * An event published when a connection is checked into the connection pool
+ * @public
+ * @category Event
+ */
+class ConnectionCheckedInEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool, connection) {
+        super(pool);
+        this.connectionId = connection.id;
+    }
+}
+exports.ConnectionCheckedInEvent = ConnectionCheckedInEvent;
+/**
+ * An event published when a connection pool is cleared
+ * @public
+ * @category Event
+ */
+class ConnectionPoolClearedEvent extends ConnectionPoolMonitoringEvent {
+    /** @internal */
+    constructor(pool, options = {}) {
+        super(pool);
+        this.serviceId = options.serviceId;
+        this.interruptInUseConnections = options.interruptInUseConnections;
+    }
+}
+exports.ConnectionPoolClearedEvent = ConnectionPoolClearedEvent;
+//# sourceMappingURL=connection_pool_events.js.map

node_modules/mongodb/lib/cmap/connection_pool_events.js.map

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node_modules/mongodb/lib/cmap/errors.js

@@ -0,0 +1,64 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WaitQueueTimeoutError = exports.PoolClearedOnNetworkError = exports.PoolClearedError = exports.PoolClosedError = void 0;
+const error_1 = require("../error");
+/**
+ * An error indicating a connection pool is closed
+ * @category Error
+ */
+class PoolClosedError extends error_1.MongoDriverError {
+    constructor(pool) {
+        super('Attempted to check out a connection from closed connection pool');
+        this.address = pool.address;
+    }
+    get name() {
+        return 'MongoPoolClosedError';
+    }
+}
+exports.PoolClosedError = PoolClosedError;
+/**
+ * An error indicating a connection pool is currently paused
+ * @category Error
+ */
+class PoolClearedError extends error_1.MongoNetworkError {
+    constructor(pool, message) {
+        const errorMessage = message
+            ? message
+            : `Connection pool for ${pool.address} was cleared because another operation failed with: "${pool.serverError?.message}"`;
+        super(errorMessage);
+        this.address = pool.address;
+        this.addErrorLabel(error_1.MongoErrorLabel.RetryableWriteError);
+    }
+    get name() {
+        return 'MongoPoolClearedError';
+    }
+}
+exports.PoolClearedError = PoolClearedError;
+/**
+ * An error indicating that a connection pool has been cleared after the monitor for that server timed out.
+ * @category Error
+ */
+class PoolClearedOnNetworkError extends PoolClearedError {
+    constructor(pool) {
+        super(pool, `Connection to ${pool.address} interrupted due to server monitor timeout`);
+    }
+    get name() {
+        return 'PoolClearedOnNetworkError';
+    }
+}
+exports.PoolClearedOnNetworkError = PoolClearedOnNetworkError;
+/**
+ * An error thrown when a request to check out a connection times out
+ * @category Error
+ */
+class WaitQueueTimeoutError extends error_1.MongoDriverError {
+    constructor(message, address) {
+        super(message);
+        this.address = address;
+    }
+    get name() {
+        return 'MongoWaitQueueTimeoutError';
+    }
+}
+exports.WaitQueueTimeoutError = WaitQueueTimeoutError;
+//# sourceMappingURL=errors.js.map

node_modules/mongodb/lib/cmap/errors.js.map

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node_modules/mongodb/lib/cmap/message_stream.js

@@ -0,0 +1,156 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MessageStream = void 0;
+const stream_1 = require("stream");
+const error_1 = require("../error");
+const utils_1 = require("../utils");
+const commands_1 = require("./commands");
+const compression_1 = require("./wire_protocol/compression");
+const constants_1 = require("./wire_protocol/constants");
+const MESSAGE_HEADER_SIZE = 16;
+const COMPRESSION_DETAILS_SIZE = 9; // originalOpcode + uncompressedSize, compressorID
+const kDefaultMaxBsonMessageSize = 1024 * 1024 * 16 * 4;
+/** @internal */
+const kBuffer = Symbol('buffer');
+/**
+ * A duplex stream that is capable of reading and writing raw wire protocol messages, with
+ * support for optional compression
+ * @internal
+ */
+class MessageStream extends stream_1.Duplex {
+    constructor(options = {}) {
+        super(options);
+        /** @internal */
+        this.isMonitoringConnection = false;
+        this.maxBsonMessageSize = options.maxBsonMessageSize || kDefaultMaxBsonMessageSize;
+        this[kBuffer] = new utils_1.BufferPool();
+    }
+    get buffer() {
+        return this[kBuffer];
+    }
+    _write(chunk, _, callback) {
+        this[kBuffer].append(chunk);
+        processIncomingData(this, callback);
+    }
+    _read( /* size */) {
+        // NOTE: This implementation is empty because we explicitly push data to be read
+        //       when `writeMessage` is called.
+        return;
+    }
+    writeCommand(command, operationDescription) {
+        const agreedCompressor = operationDescription.agreedCompressor ?? 'none';
+        if (agreedCompressor === 'none' || !canCompress(command)) {
+            const data = command.toBin();
+            this.push(Array.isArray(data) ? Buffer.concat(data) : data);
+            return;
+        }
+        // otherwise, compress the message
+        const concatenatedOriginalCommandBuffer = Buffer.concat(command.toBin());
+        const messageToBeCompressed = concatenatedOriginalCommandBuffer.slice(MESSAGE_HEADER_SIZE);
+        // Extract information needed for OP_COMPRESSED from the uncompressed message
+        const originalCommandOpCode = concatenatedOriginalCommandBuffer.readInt32LE(12);
+        const options = {
+            agreedCompressor,
+            zlibCompressionLevel: operationDescription.zlibCompressionLevel ?? 0
+        };
+        // Compress the message body
+        (0, compression_1.compress)(options, messageToBeCompressed).then(compressedMessage => {
+            // Create the msgHeader of OP_COMPRESSED
+            const msgHeader = Buffer.alloc(MESSAGE_HEADER_SIZE);
+            msgHeader.writeInt32LE(MESSAGE_HEADER_SIZE + COMPRESSION_DETAILS_SIZE + compressedMessage.length, 0); // messageLength
+            msgHeader.writeInt32LE(command.requestId, 4); // requestID
+            msgHeader.writeInt32LE(0, 8); // responseTo (zero)
+            msgHeader.writeInt32LE(constants_1.OP_COMPRESSED, 12); // opCode
+            // Create the compression details of OP_COMPRESSED
+            const compressionDetails = Buffer.alloc(COMPRESSION_DETAILS_SIZE);
+            compressionDetails.writeInt32LE(originalCommandOpCode, 0); // originalOpcode
+            compressionDetails.writeInt32LE(messageToBeCompressed.length, 4); // Size of the uncompressed compressedMessage, excluding the MsgHeader
+            compressionDetails.writeUInt8(compression_1.Compressor[agreedCompressor], 8); // compressorID
+            this.push(Buffer.concat([msgHeader, compressionDetails, compressedMessage]));
+        }, error => {
+            operationDescription.cb(error);
+        });
+    }
+}
+exports.MessageStream = MessageStream;
+// Return whether a command contains an uncompressible command term
+// Will return true if command contains no uncompressible command terms
+function canCompress(command) {
+    const commandDoc = command instanceof commands_1.Msg ? command.command : command.query;
+    const commandName = Object.keys(commandDoc)[0];
+    return !compression_1.uncompressibleCommands.has(commandName);
+}
+function processIncomingData(stream, callback) {
+    const buffer = stream[kBuffer];
+    const sizeOfMessage = buffer.getInt32();
+    if (sizeOfMessage == null) {
+        return callback();
+    }
+    if (sizeOfMessage < 0) {
+        return callback(new error_1.MongoParseError(`Invalid message size: ${sizeOfMessage}`));
+    }
+    if (sizeOfMessage > stream.maxBsonMessageSize) {
+        return callback(new error_1.MongoParseError(`Invalid message size: ${sizeOfMessage}, max allowed: ${stream.maxBsonMessageSize}`));
+    }
+    if (sizeOfMessage > buffer.length) {
+        return callback();
+    }
+    const message = buffer.read(sizeOfMessage);
+    const messageHeader = {
+        length: message.readInt32LE(0),
+        requestId: message.readInt32LE(4),
+        responseTo: message.readInt32LE(8),
+        opCode: message.readInt32LE(12)
+    };
+    const monitorHasAnotherHello = () => {
+        if (stream.isMonitoringConnection) {
+            // Can we read the next message size?
+            const sizeOfMessage = buffer.getInt32();
+            if (sizeOfMessage != null && sizeOfMessage <= buffer.length) {
+                return true;
+            }
+        }
+        return false;
+    };
+    let ResponseType = messageHeader.opCode === constants_1.OP_MSG ? commands_1.BinMsg : commands_1.Response;
+    if (messageHeader.opCode !== constants_1.OP_COMPRESSED) {
+        const messageBody = message.subarray(MESSAGE_HEADER_SIZE);
+        // If we are a monitoring connection message stream and
+        // there is more in the buffer that can be read, skip processing since we
+        // want the last hello command response that is in the buffer.
+        if (monitorHasAnotherHello()) {
+            return processIncomingData(stream, callback);
+        }
+        stream.emit('message', new ResponseType(message, messageHeader, messageBody));
+        if (buffer.length >= 4) {
+            return processIncomingData(stream, callback);
+        }
+        return callback();
+    }
+    messageHeader.fromCompressed = true;
+    messageHeader.opCode = message.readInt32LE(MESSAGE_HEADER_SIZE);
+    messageHeader.length = message.readInt32LE(MESSAGE_HEADER_SIZE + 4);
+    const compressorID = message[MESSAGE_HEADER_SIZE + 8];
+    const compressedBuffer = message.slice(MESSAGE_HEADER_SIZE + 9);
+    // recalculate based on wrapped opcode
+    ResponseType = messageHeader.opCode === constants_1.OP_MSG ? commands_1.BinMsg : commands_1.Response;
+    (0, compression_1.decompress)(compressorID, compressedBuffer).then(messageBody => {
+        if (messageBody.length !== messageHeader.length) {
+            return callback(new error_1.MongoDecompressionError('Message body and message header must be the same length'));
+        }
+        // If we are a monitoring connection message stream and
+        // there is more in the buffer that can be read, skip processing since we
+        // want the last hello command response that is in the buffer.
+        if (monitorHasAnotherHello()) {
+            return processIncomingData(stream, callback);
+        }
+        stream.emit('message', new ResponseType(message, messageHeader, messageBody));
+        if (buffer.length >= 4) {
+            return processIncomingData(stream, callback);
+        }
+        return callback();
+    }, error => {
+        return callback(error);
+    });
+}
+//# sourceMappingURL=message_stream.js.map

node_modules/mongodb/lib/cmap/metrics.js

@@ -0,0 +1,62 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ConnectionPoolMetrics = void 0;
+/** @internal */
+class ConnectionPoolMetrics {
+    constructor() {
+        this.txnConnections = 0;
+        this.cursorConnections = 0;
+        this.otherConnections = 0;
+    }
+    /**
+     * Mark a connection as pinned for a specific operation.
+     */
+    markPinned(pinType) {
+        if (pinType === ConnectionPoolMetrics.TXN) {
+            this.txnConnections += 1;
+        }
+        else if (pinType === ConnectionPoolMetrics.CURSOR) {
+            this.cursorConnections += 1;
+        }
+        else {
+            this.otherConnections += 1;
+        }
+    }
+    /**
+     * Unmark a connection as pinned for an operation.
+     */
+    markUnpinned(pinType) {
+        if (pinType === ConnectionPoolMetrics.TXN) {
+            this.txnConnections -= 1;
+        }
+        else if (pinType === ConnectionPoolMetrics.CURSOR) {
+            this.cursorConnections -= 1;
+        }
+        else {
+            this.otherConnections -= 1;
+        }
+    }
+    /**
+     * Return information about the cmap metrics as a string.
+     */
+    info(maxPoolSize) {
+        return ('Timed out while checking out a connection from connection pool: ' +
+            `maxPoolSize: ${maxPoolSize}, ` +
+            `connections in use by cursors: ${this.cursorConnections}, ` +
+            `connections in use by transactions: ${this.txnConnections}, ` +
+            `connections in use by other operations: ${this.otherConnections}`);
+    }
+    /**
+     * Reset the metrics to the initial values.
+     */
+    reset() {
+        this.txnConnections = 0;
+        this.cursorConnections = 0;
+        this.otherConnections = 0;
+    }
+}
+exports.ConnectionPoolMetrics = ConnectionPoolMetrics;
+ConnectionPoolMetrics.TXN = 'txn';
+ConnectionPoolMetrics.CURSOR = 'cursor';
+ConnectionPoolMetrics.OTHER = 'other';
+//# sourceMappingURL=metrics.js.map

node_modules/mongodb/lib/cmap/metrics.js.map

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node_modules/mongodb/lib/cmap/stream_description.js

@@ -0,0 +1,51 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.StreamDescription = void 0;
+const common_1 = require("../sdam/common");
+const server_description_1 = require("../sdam/server_description");
+const RESPONSE_FIELDS = [
+    'minWireVersion',
+    'maxWireVersion',
+    'maxBsonObjectSize',
+    'maxMessageSizeBytes',
+    'maxWriteBatchSize',
+    'logicalSessionTimeoutMinutes'
+];
+/** @public */
+class StreamDescription {
+    constructor(address, options) {
+        this.address = address;
+        this.type = common_1.ServerType.Unknown;
+        this.minWireVersion = undefined;
+        this.maxWireVersion = undefined;
+        this.maxBsonObjectSize = 16777216;
+        this.maxMessageSizeBytes = 48000000;
+        this.maxWriteBatchSize = 100000;
+        this.logicalSessionTimeoutMinutes = options?.logicalSessionTimeoutMinutes;
+        this.loadBalanced = !!options?.loadBalanced;
+        this.compressors =
+            options && options.compressors && Array.isArray(options.compressors)
+                ? options.compressors
+                : [];
+    }
+    receiveResponse(response) {
+        if (response == null) {
+            return;
+        }
+        this.type = (0, server_description_1.parseServerType)(response);
+        for (const field of RESPONSE_FIELDS) {
+            if (response[field] != null) {
+                this[field] = response[field];
+            }
+            // testing case
+            if ('__nodejs_mock_server__' in response) {
+                this.__nodejs_mock_server__ = response['__nodejs_mock_server__'];
+            }
+        }
+        if (response.compression) {
+            this.compressor = this.compressors.filter(c => response.compression?.includes(c))[0];
+        }
+    }
+}
+exports.StreamDescription = StreamDescription;
+//# sourceMappingURL=stream_description.js.map

node_modules/mongodb/lib/cmap/stream_description.js.map

@@ -0,0 +1 @@
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node_modules/mongodb/lib/cmap/wire_protocol/compression.js

@@ -0,0 +1,81 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.decompress = exports.compress = exports.uncompressibleCommands = exports.Compressor = void 0;
+const util_1 = require("util");
+const zlib = require("zlib");
+const constants_1 = require("../../constants");
+const deps_1 = require("../../deps");
+const error_1 = require("../../error");
+/** @public */
+exports.Compressor = Object.freeze({
+    none: 0,
+    snappy: 1,
+    zlib: 2,
+    zstd: 3
+});
+exports.uncompressibleCommands = new Set([
+    constants_1.LEGACY_HELLO_COMMAND,
+    'saslStart',
+    'saslContinue',
+    'getnonce',
+    'authenticate',
+    'createUser',
+    'updateUser',
+    'copydbSaslStart',
+    'copydbgetnonce',
+    'copydb'
+]);
+const ZSTD_COMPRESSION_LEVEL = 3;
+const zlibInflate = (0, util_1.promisify)(zlib.inflate.bind(zlib));
+const zlibDeflate = (0, util_1.promisify)(zlib.deflate.bind(zlib));
+// Facilitate compressing a message using an agreed compressor
+async function compress(options, dataToBeCompressed) {
+    const zlibOptions = {};
+    switch (options.agreedCompressor) {
+        case 'snappy':
+            if ('kModuleError' in deps_1.Snappy) {
+                throw deps_1.Snappy['kModuleError'];
+            }
+            return deps_1.Snappy.compress(dataToBeCompressed);
+        case 'zstd':
+            if ('kModuleError' in deps_1.ZStandard) {
+                throw deps_1.ZStandard['kModuleError'];
+            }
+            return deps_1.ZStandard.compress(dataToBeCompressed, ZSTD_COMPRESSION_LEVEL);
+        case 'zlib':
+            if (options.zlibCompressionLevel) {
+                zlibOptions.level = options.zlibCompressionLevel;
+            }
+            return zlibDeflate(dataToBeCompressed, zlibOptions);
+        default:
+            throw new error_1.MongoInvalidArgumentError(`Unknown compressor ${options.agreedCompressor} failed to compress`);
+    }
+}
+exports.compress = compress;
+// Decompress a message using the given compressor
+async function decompress(compressorID, compressedData) {
+    if (compressorID !== exports.Compressor.snappy &&
+        compressorID !== exports.Compressor.zstd &&
+        compressorID !== exports.Compressor.zlib &&
+        compressorID !== exports.Compressor.none) {
+        throw new error_1.MongoDecompressionError(`Server sent message compressed using an unsupported compressor. (Received compressor ID ${compressorID})`);
+    }
+    switch (compressorID) {
+        case exports.Compressor.snappy:
+            if ('kModuleError' in deps_1.Snappy) {
+                throw deps_1.Snappy['kModuleError'];
+            }
+            return deps_1.Snappy.uncompress(compressedData, { asBuffer: true });
+        case exports.Compressor.zstd:
+            if ('kModuleError' in deps_1.ZStandard) {
+                throw deps_1.ZStandard['kModuleError'];
+            }
+            return deps_1.ZStandard.decompress(compressedData);
+        case exports.Compressor.zlib:
+            return zlibInflate(compressedData);
+        default:
+            return compressedData;
+    }
+}
+exports.decompress = decompress;
+//# sourceMappingURL=compression.js.map

node_modules/mongodb/lib/cmap/wire_protocol/compression.js.map

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node_modules/mongodb/lib/cmap/wire_protocol/constants.js

@@ -0,0 +1,15 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.OP_MSG = exports.OP_COMPRESSED = exports.OP_DELETE = exports.OP_QUERY = exports.OP_INSERT = exports.OP_UPDATE = exports.OP_REPLY = exports.MAX_SUPPORTED_WIRE_VERSION = exports.MIN_SUPPORTED_WIRE_VERSION = exports.MAX_SUPPORTED_SERVER_VERSION = exports.MIN_SUPPORTED_SERVER_VERSION = void 0;
+exports.MIN_SUPPORTED_SERVER_VERSION = '3.6';
+exports.MAX_SUPPORTED_SERVER_VERSION = '6.0';
+exports.MIN_SUPPORTED_WIRE_VERSION = 6;
+exports.MAX_SUPPORTED_WIRE_VERSION = 17;
+exports.OP_REPLY = 1;
+exports.OP_UPDATE = 2001;
+exports.OP_INSERT = 2002;
+exports.OP_QUERY = 2004;
+exports.OP_DELETE = 2006;
+exports.OP_COMPRESSED = 2012;
+exports.OP_MSG = 2013;
+//# sourceMappingURL=constants.js.map

node_modules/mongodb/lib/cmap/wire_protocol/constants.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"constants.js","sourceRoot":"","sources":["../../../src/cmap/wire_protocol/constants.ts"],"names":[],"mappings":";;;AAAa,QAAA,4BAA4B,GAAG,KAAK,CAAC;AACrC,QAAA,4BAA4B,GAAG,KAAK,CAAC;AACrC,QAAA,0BAA0B,GAAG,CAAC,CAAC;AAC/B,QAAA,0BAA0B,GAAG,EAAE,CAAC;AAChC,QAAA,QAAQ,GAAG,CAAC,CAAC;AACb,QAAA,SAAS,GAAG,IAAI,CAAC;AACjB,QAAA,SAAS,GAAG,IAAI,CAAC;AACjB,QAAA,QAAQ,GAAG,IAAI,CAAC;AAChB,QAAA,SAAS,GAAG,IAAI,CAAC;AACjB,QAAA,aAAa,GAAG,IAAI,CAAC;AACrB,QAAA,MAAM,GAAG,IAAI,CAAC"}

node_modules/mongodb/lib/cmap/wire_protocol/shared.js

@@ -0,0 +1,55 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isSharded = exports.applyCommonQueryOptions = exports.getReadPreference = void 0;
+const error_1 = require("../../error");
+const read_preference_1 = require("../../read_preference");
+const common_1 = require("../../sdam/common");
+const topology_description_1 = require("../../sdam/topology_description");
+function getReadPreference(cmd, options) {
+    // Default to command version of the readPreference
+    let readPreference = cmd.readPreference || read_preference_1.ReadPreference.primary;
+    // If we have an option readPreference override the command one
+    if (options?.readPreference) {
+        readPreference = options.readPreference;
+    }
+    if (typeof readPreference === 'string') {
+        readPreference = read_preference_1.ReadPreference.fromString(readPreference);
+    }
+    if (!(readPreference instanceof read_preference_1.ReadPreference)) {
+        throw new error_1.MongoInvalidArgumentError('Option "readPreference" must be a ReadPreference instance');
+    }
+    return readPreference;
+}
+exports.getReadPreference = getReadPreference;
+function applyCommonQueryOptions(queryOptions, options) {
+    Object.assign(queryOptions, {
+        raw: typeof options.raw === 'boolean' ? options.raw : false,
+        promoteLongs: typeof options.promoteLongs === 'boolean' ? options.promoteLongs : true,
+        promoteValues: typeof options.promoteValues === 'boolean' ? options.promoteValues : true,
+        promoteBuffers: typeof options.promoteBuffers === 'boolean' ? options.promoteBuffers : false,
+        bsonRegExp: typeof options.bsonRegExp === 'boolean' ? options.bsonRegExp : false,
+        enableUtf8Validation: typeof options.enableUtf8Validation === 'boolean' ? options.enableUtf8Validation : true
+    });
+    if (options.session) {
+        queryOptions.session = options.session;
+    }
+    return queryOptions;
+}
+exports.applyCommonQueryOptions = applyCommonQueryOptions;
+function isSharded(topologyOrServer) {
+    if (topologyOrServer == null) {
+        return false;
+    }
+    if (topologyOrServer.description && topologyOrServer.description.type === common_1.ServerType.Mongos) {
+        return true;
+    }
+    // NOTE: This is incredibly inefficient, and should be removed once command construction
+    //       happens based on `Server` not `Topology`.
+    if (topologyOrServer.description && topologyOrServer.description instanceof topology_description_1.TopologyDescription) {
+        const servers = Array.from(topologyOrServer.description.servers.values());
+        return servers.some((server) => server.type === common_1.ServerType.Mongos);
+    }
+    return false;
+}
+exports.isSharded = isSharded;
+//# sourceMappingURL=shared.js.map

node_modules/mongodb/lib/cmap/wire_protocol/shared.js.map

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