Initial commit (by create-cloudflare CLI)

node_modules/rollup-plugin-inject/dist/rollup-plugin-inject.cjs.js

@@ -0,0 +1,201 @@
+'use strict';
+
+function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
+
+var rollupPluginutils = require('rollup-pluginutils');
+var path = require('path');
+var estreeWalker = require('estree-walker');
+var MagicString = _interopDefault(require('magic-string'));
+
+const escape = str => {
+  return str.replace(/[-[\]/{}()*+?.\\^$|]/g, "\\$&");
+};
+
+const isReference = (node, parent) => {
+  if (node.type === "MemberExpression") {
+    return !node.computed && isReference(node.object, node);
+  }
+
+  if (node.type === "Identifier") {
+    // TODO is this right?
+    if (parent.type === "MemberExpression") return parent.computed || node === parent.object;
+
+    // disregard the `bar` in { bar: foo }
+    if (parent.type === "Property" && node !== parent.value) return false;
+
+    // disregard the `bar` in `class Foo { bar () {...} }`
+    if (parent.type === "MethodDefinition") return false;
+
+    // disregard the `bar` in `export { foo as bar }`
+    if (parent.type === "ExportSpecifier" && node !== parent.local) return;
+
+    return true;
+  }
+};
+
+const flatten = node => {
+  const parts = [];
+
+  while (node.type === "MemberExpression") {
+    parts.unshift(node.property.name);
+    node = node.object;
+  }
+
+  const name = node.name;
+  parts.unshift(name);
+
+  return { name, keypath: parts.join(".") };
+};
+
+function inject(options) {
+  if (!options) throw new Error("Missing options");
+
+  const filter = rollupPluginutils.createFilter(options.include, options.exclude);
+
+  let modules = options.modules;
+
+  if (!modules) {
+    modules = Object.assign({}, options);
+    delete modules.include;
+    delete modules.exclude;
+    delete modules.sourceMap;
+    delete modules.sourcemap;
+  }
+
+  const modulesMap = new Map(Object.entries(modules));
+
+  // Fix paths on Windows
+  if (path.sep !== "/") {
+    modulesMap.forEach((mod, key) => {
+      modulesMap.set(
+        key,
+        Array.isArray(mod) ? [mod[0].split(path.sep).join("/"), mod[1]] : mod.split(path.sep).join("/")
+      );
+    });
+  }
+
+  const firstpass = new RegExp(
+    `(?:${Array.from(modulesMap.keys())
+      .map(escape)
+      .join("|")})`,
+    "g"
+  );
+  const sourceMap = options.sourceMap !== false && options.sourcemap !== false;
+
+  return {
+    name: "inject",
+
+    transform(code, id) {
+      if (!filter(id)) return null;
+      if (code.search(firstpass) === -1) return null;
+
+      if (path.sep !== "/") id = id.split(path.sep).join("/");
+
+      let ast = null;
+      try {
+        ast = this.parse(code);
+      } catch (err) {
+        this.warn({
+          code: "PARSE_ERROR",
+          message: `rollup-plugin-inject: failed to parse ${id}. Consider restricting the plugin to particular files via options.include`
+        });
+      }
+      if (!ast) {
+        return null;
+      }
+
+      // analyse scopes
+      let scope = rollupPluginutils.attachScopes(ast, "scope");
+
+      const imports = new Set();
+      ast.body.forEach(node => {
+        if (node.type === "ImportDeclaration") {
+          node.specifiers.forEach(specifier => {
+            imports.add(specifier.local.name);
+          });
+        }
+      });
+
+      const magicString = new MagicString(code);
+
+      const newImports = new Map();
+
+      function handleReference(node, name, keypath) {
+        let mod = modulesMap.get(keypath);
+        if (mod && !imports.has(name) && !scope.contains(name)) {
+          if (typeof mod === "string") mod = [mod, "default"];
+
+          // prevent module from importing itself
+          if (mod[0] === id) return;
+
+          const hash = `${keypath}:${mod[0]}:${mod[1]}`;
+
+          const importLocalName =
+            name === keypath ? name : rollupPluginutils.makeLegalIdentifier(`$inject_${keypath}`);
+
+          if (!newImports.has(hash)) {
+            if (mod[1] === "*") {
+              newImports.set(hash, `import * as ${importLocalName} from '${mod[0]}';`);
+            } else {
+              newImports.set(hash, `import { ${mod[1]} as ${importLocalName} } from '${mod[0]}';`);
+            }
+          }
+
+          if (name !== keypath) {
+            magicString.overwrite(node.start, node.end, importLocalName, {
+              storeName: true
+            });
+          }
+
+          return true;
+        }
+      }
+
+      estreeWalker.walk(ast, {
+        enter(node, parent) {
+          if (sourceMap) {
+            magicString.addSourcemapLocation(node.start);
+            magicString.addSourcemapLocation(node.end);
+          }
+
+          if (node.scope) scope = node.scope;
+
+          // special case – shorthand properties. because node.key === node.value,
+          // we can't differentiate once we've descended into the node
+          if (node.type === "Property" && node.shorthand) {
+            const name = node.key.name;
+            handleReference(node, name, name);
+            return this.skip();
+          }
+
+          if (isReference(node, parent)) {
+            const { name, keypath } = flatten(node);
+            const handled = handleReference(node, name, keypath);
+            if (handled) return this.skip();
+          }
+        },
+        leave(node) {
+          if (node.scope) scope = scope.parent;
+        }
+      });
+
+      if (newImports.size === 0) {
+        return {
+          code,
+          ast,
+          map: sourceMap ? magicString.generateMap({ hires: true }) : null
+        };
+      }
+      const importBlock = Array.from(newImports.values()).join("\n\n");
+
+      magicString.prepend(importBlock + "\n\n");
+
+      return {
+        code: magicString.toString(),
+        map: sourceMap ? magicString.generateMap({ hires: true }) : null
+      };
+    }
+  };
+}
+
+module.exports = inject;