83 lines
3.1 KiB
JavaScript
Executable File
83 lines
3.1 KiB
JavaScript
Executable File
"use strict";
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/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.dev/license
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.DevkitFileSystem = void 0;
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const core_1 = require("@angular-devkit/core");
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const file_system_1 = require("../update-tool/file-system");
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const path = require("path");
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/**
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* File system that leverages the virtual tree from the CLI devkit. This file
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* system is commonly used by `ng update` migrations that run as part of the
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* Angular CLI.
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*/
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class DevkitFileSystem extends file_system_1.FileSystem {
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constructor(_tree) {
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super();
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this._tree = _tree;
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this._updateRecorderCache = new Map();
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}
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resolve(...segments) {
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// Note: We use `posix.resolve` as the devkit paths are using posix separators.
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return (0, core_1.normalize)(path.posix.resolve('/', ...segments.map(core_1.normalize)));
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}
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edit(filePath) {
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if (this._updateRecorderCache.has(filePath)) {
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return this._updateRecorderCache.get(filePath);
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}
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const recorder = this._tree.beginUpdate(filePath);
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this._updateRecorderCache.set(filePath, recorder);
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return recorder;
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}
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commitEdits() {
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this._updateRecorderCache.forEach(r => this._tree.commitUpdate(r));
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this._updateRecorderCache.clear();
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}
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fileExists(filePath) {
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return this._tree.exists(filePath);
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}
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directoryExists(dirPath) {
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// The devkit tree does not expose an API for checking whether a given
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// directory exists. It throws a specific error though if a directory
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// is being read as a file. We use that to check if a directory exists.
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try {
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this._tree.get(dirPath);
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}
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catch (e) {
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// Note: We do not use an `instanceof` check here. It could happen that
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// the devkit version used by the CLI is different than the one we end up
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// loading. This can happen depending on how Yarn/NPM hoists the NPM
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// packages / whether there are multiple versions installed. Typescript
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// throws a compilation error if the type isn't specified and we can't
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// check the type, so we have to cast the error output to any.
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if (e.constructor.name === 'PathIsDirectoryException') {
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return true;
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}
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}
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return false;
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}
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overwrite(filePath, content) {
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this._tree.overwrite(filePath, content);
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}
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create(filePath, content) {
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this._tree.create(filePath, content);
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}
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delete(filePath) {
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this._tree.delete(filePath);
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}
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read(filePath) {
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const buffer = this._tree.read(filePath);
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return buffer !== null ? buffer.toString() : null;
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}
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readDirectory(dirPath) {
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const { subdirs: directories, subfiles: files } = this._tree.getDir(dirPath);
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return { directories, files };
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}
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}
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exports.DevkitFileSystem = DevkitFileSystem;
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//# sourceMappingURL=devkit-file-system.js.map
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