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@pkerschbaum/code-oss-file-service

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VS Code ([microsoft/vscode](https://github.com/microsoft/vscode)) includes a rich "`FileService`" and "`DiskFileSystemProvider`" abstraction built on top of Node.js core modules (`fs`, `path`) and Electron's `shell` module. This package allows to use that

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"use strict"; /*--------------------------------------------------------------------------------------------- * Copyright (c) Microsoft Corporation. All rights reserved. * Licensed under the MIT License. See License.txt in the project root for license information. *--------------------------------------------------------------------------------------------*/ Object.defineProperty(exports, "__esModule", { value: true }); exports.CancellationTokenSource = exports.CancellationToken = void 0; const event_1 = require("../../base/common/event"); const shortcutEvent = Object.freeze(function (callback, context) { const handle = setTimeout(callback.bind(context), 0); return { dispose() { clearTimeout(handle); } }; }); var CancellationToken; (function (CancellationToken) { function isCancellationToken(thing) { if (thing === CancellationToken.None || thing === CancellationToken.Cancelled) { return true; } if (thing instanceof MutableToken) { return true; } if (!thing || typeof thing !== 'object') { return false; } return typeof thing.isCancellationRequested === 'boolean' && typeof thing.onCancellationRequested === 'function'; } CancellationToken.isCancellationToken = isCancellationToken; CancellationToken.None = Object.freeze({ isCancellationRequested: false, onCancellationRequested: event_1.Event.None }); CancellationToken.Cancelled = Object.freeze({ isCancellationRequested: true, onCancellationRequested: shortcutEvent }); })(CancellationToken = exports.CancellationToken || (exports.CancellationToken = {})); class MutableToken { constructor() { this._isCancelled = false; this._emitter = null; } cancel() { if (!this._isCancelled) { this._isCancelled = true; if (this._emitter) { this._emitter.fire(undefined); this.dispose(); } } } get isCancellationRequested() { return this._isCancelled; } get onCancellationRequested() { if (this._isCancelled) { return shortcutEvent; } if (!this._emitter) { this._emitter = new event_1.Emitter(); } return this._emitter.event; } dispose() { if (this._emitter) { this._emitter.dispose(); this._emitter = null; } } } class CancellationTokenSource { constructor(parent) { this._token = undefined; this._parentListener = undefined; this._parentListener = parent && parent.onCancellationRequested(this.cancel, this); } get token() { if (!this._token) { // be lazy and create the token only when // actually needed this._token = new MutableToken(); } return this._token; } cancel() { if (!this._token) { // save an object by returning the default // cancelled token when cancellation happens // before someone asks for the token this._token = CancellationToken.Cancelled; } else if (this._token instanceof MutableToken) { // actually cancel this._token.cancel(); } } dispose(cancel = false) { if (cancel) { this.cancel(); } if (this._parentListener) { this._parentListener.dispose(); } if (!this._token) { // ensure to initialize with an empty token if we had none this._token = CancellationToken.None; } else if (this._token instanceof MutableToken) { // actually dispose this._token.dispose(); } } } exports.CancellationTokenSource = CancellationTokenSource; //# sourceMappingURL=cancellation.js.map