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node_modules/@babel/helper-define-polyfill-provider/lib/imports-cache.js

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+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+var _babel = _interopRequireWildcard(require("@babel/core"));
+function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
+function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
+const {
+  types: t
+} = _babel.default || _babel;
+class ImportsCache {
+  constructor(resolver) {
+    this._imports = new WeakMap();
+    this._anonymousImports = new WeakMap();
+    this._lastImports = new WeakMap();
+    this._resolver = resolver;
+  }
+  storeAnonymous(programPath, url,
+  // eslint-disable-next-line no-undef
+  getVal) {
+    const key = this._normalizeKey(programPath, url);
+    const imports = this._ensure(this._anonymousImports, programPath, Set);
+    if (imports.has(key)) return;
+    const node = getVal(programPath.node.sourceType === "script", t.stringLiteral(this._resolver(url)));
+    imports.add(key);
+    this._injectImport(programPath, node);
+  }
+  storeNamed(programPath, url, name, getVal) {
+    const key = this._normalizeKey(programPath, url, name);
+    const imports = this._ensure(this._imports, programPath, Map);
+    if (!imports.has(key)) {
+      const {
+        node,
+        name: id
+      } = getVal(programPath.node.sourceType === "script", t.stringLiteral(this._resolver(url)), t.identifier(name));
+      imports.set(key, id);
+      this._injectImport(programPath, node);
+    }
+    return t.identifier(imports.get(key));
+  }
+  _injectImport(programPath, node) {
+    const lastImport = this._lastImports.get(programPath);
+    let newNodes;
+    if (lastImport && lastImport.node &&
+    // Sometimes the AST is modified and the "last import"
+    // we have has been replaced
+    lastImport.parent === programPath.node && lastImport.container === programPath.node.body) {
+      newNodes = lastImport.insertAfter(node);
+    } else {
+      newNodes = programPath.unshiftContainer("body", node);
+    }
+    const newNode = newNodes[newNodes.length - 1];
+    this._lastImports.set(programPath, newNode);
+
+    /*
+    let lastImport;
+     programPath.get("body").forEach(path => {
+      if (path.isImportDeclaration()) lastImport = path;
+      if (
+        path.isExpressionStatement() &&
+        isRequireCall(path.get("expression"))
+      ) {
+        lastImport = path;
+      }
+      if (
+        path.isVariableDeclaration() &&
+        path.get("declarations").length === 1 &&
+        (isRequireCall(path.get("declarations.0.init")) ||
+          (path.get("declarations.0.init").isMemberExpression() &&
+            isRequireCall(path.get("declarations.0.init.object"))))
+      ) {
+        lastImport = path;
+      }
+    });*/
+  }
+
+  _ensure(map, programPath, Collection) {
+    let collection = map.get(programPath);
+    if (!collection) {
+      collection = new Collection();
+      map.set(programPath, collection);
+    }
+    return collection;
+  }
+  _normalizeKey(programPath, url, name = "") {
+    const {
+      sourceType
+    } = programPath.node;
+
+    // If we rely on the imported binding (the "name" parameter), we also need to cache
+    // based on the sourceType. This is because the module transforms change the names
+    // of the import variables.
+    return `${name && sourceType}::${url}::${name}`;
+  }
+}
+exports.default = ImportsCache;