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{ "type": "module", "source": "doc/api/globals.md", "introduced_in": "v0.10.0", "globals": [ { "textRaw": "Class: `AbortController`", "type": "global", "name": "AbortController", "meta": { "added": [ "v15.0.0" ], "changes": [ { "version": "v15.4.0", "pr-url": "https://github.com/nodejs/node/pull/35949", "description": "No longer experimental." } ] }, "desc": "<p>A utility class used to signal cancelation in selected <code>Promise</code>-based APIs.\nThe API is based on the Web API <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/AbortController\"><code>AbortController</code></a>.</p>\n<pre><code class=\"language-js\">const ac = new AbortController();\n\nac.signal.addEventListener('abort', () => console.log('Aborted!'),\n { once: true });\n\nac.abort();\n\nconsole.log(ac.signal.aborted); // Prints True\n</code></pre>", "methods": [ { "textRaw": "`abortController.abort([reason])`", "type": "method", "name": "abort", "meta": { "added": [ "v15.0.0", "v14.17.0" ], "changes": [ { "version": "v16.14.0", "pr-url": "https://github.com/nodejs/node/pull/40807", "description": "Added the new optional reason argument." } ] }, "signatures": [ { "params": [ { "textRaw": "`reason` {any} An optional reason, retrievable on the `AbortSignal`'s `reason` property.", "name": "reason", "type": "any", "desc": "An optional reason, retrievable on the `AbortSignal`'s `reason` property." } ] } ], "desc": "<p>Triggers the abort signal, causing the <code>abortController.signal</code> to emit\nthe <code>'abort'</code> event.</p>" } ], "properties": [ { "textRaw": "`signal` Type: {AbortSignal}", "type": "AbortSignal", "name": "Type", "meta": { "added": [ "v15.0.0" ], "changes": [] } } ], "classes": [ { "textRaw": "Class: `AbortSignal`", "type": "class", "name": "AbortSignal", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "desc": "<ul>\n<li>Extends: <a href=\"events.html#class-eventtarget\" class=\"type\"><EventTarget></a></li>\n</ul>\n<p>The <code>AbortSignal</code> is used to notify observers when the\n<code>abortController.abort()</code> method is called.</p>", "classMethods": [ { "textRaw": "Static method: `AbortSignal.abort([reason])`", "type": "classMethod", "name": "abort", "meta": { "added": [ "v15.12.0", "v14.17.0" ], "changes": [ { "version": "v16.14.0", "pr-url": "https://github.com/nodejs/node/pull/40807", "description": "Added the new optional reason argument." } ] }, "signatures": [ { "return": { "textRaw": "Returns: {AbortSignal}", "name": "return", "type": "AbortSignal" }, "params": [ { "textRaw": "`reason`: {any}", "name": "reason", "type": "any" } ] } ], "desc": "<p>Returns a new already aborted <code>AbortSignal</code>.</p>" }, { "textRaw": "Static method: `AbortSignal.timeout(delay)`", "type": "classMethod", "name": "timeout", "meta": { "added": [ "v16.14.0" ], "changes": [] }, "signatures": [ { "params": [ { "textRaw": "`delay` {number} The number of milliseconds to wait before triggering the AbortSignal.", "name": "delay", "type": "number", "desc": "The number of milliseconds to wait before triggering the AbortSignal." } ] } ], "desc": "<p>Returns a new <code>AbortSignal</code> which will be aborted in <code>delay</code> milliseconds.</p>" } ], "events": [ { "textRaw": "Event: `'abort'`", "type": "event", "name": "abort", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "params": [], "desc": "<p>The <code>'abort'</code> event is emitted when the <code>abortController.abort()</code> method\nis called. The callback is invoked with a single object argument with a\nsingle <code>type</code> property set to <code>'abort'</code>:</p>\n<pre><code class=\"language-js\">const ac = new AbortController();\n\n// Use either the onabort property...\nac.signal.onabort = () => console.log('aborted!');\n\n// Or the EventTarget API...\nac.signal.addEventListener('abort', (event) => {\n console.log(event.type); // Prints 'abort'\n}, { once: true });\n\nac.abort();\n</code></pre>\n<p>The <code>AbortController</code> with which the <code>AbortSignal</code> is associated will only\never trigger the <code>'abort'</code> event once. We recommended that code check\nthat the <code>abortSignal.aborted</code> attribute is <code>false</code> before adding an <code>'abort'</code>\nevent listener.</p>\n<p>Any event listeners attached to the <code>AbortSignal</code> should use the\n<code>{ once: true }</code> option (or, if using the <code>EventEmitter</code> APIs to attach a\nlistener, use the <code>once()</code> method) to ensure that the event listener is\nremoved as soon as the <code>'abort'</code> event is handled. Failure to do so may\nresult in memory leaks.</p>" } ], "properties": [ { "textRaw": "`aborted` Type: {boolean} True after the `AbortController` has been aborted.", "type": "boolean", "name": "Type", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "desc": "True after the `AbortController` has been aborted." }, { "textRaw": "`onabort` Type: {Function}", "type": "Function", "name": "Type", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "desc": "<p>An optional callback function that may be set by user code to be notified\nwhen the <code>abortController.abort()</code> function has been called.</p>" }, { "textRaw": "`reason` Type: {any}", "type": "any", "name": "Type", "meta": { "added": [ "v16.14.0" ], "changes": [] }, "desc": "<p>An optional reason specified when the <code>AbortSignal</code> was triggered.</p>\n<pre><code class=\"language-js\">const ac = new AbortController();\nac.abort(new Error('boom!'));\nconsole.log(ac.signal.reason); // Error('boom!');\n</code></pre>" } ], "methods": [ { "textRaw": "`abortSignal.throwIfAborted()`", "type": "method", "name": "throwIfAborted", "meta": { "added": [ "v16.17.0" ], "changes": [] }, "signatures": [ { "params": [] } ], "desc": "<p>If <code>abortSignal.aborted</code> is <code>true</code>, throws <code>abortSignal.reason</code>.</p>" } ] } ] }, { "textRaw": "Class: `Buffer`", "type": "global", "name": "Buffer", "meta": { "added": [ "v0.1.103" ], "changes": [] }, "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function\" class=\"type\"><Function></a></li>\n</ul>\n<p>Used to handle binary data. See the <a href=\"buffer.html\">buffer section</a>.</p>" }, { "textRaw": "`clearImmediate(immediateObject)`", "type": "global", "name": "clearImmediate", "meta": { "added": [ "v0.9.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#clearimmediateimmediate\"><code>clearImmediate</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`clearInterval(intervalObject)`", "type": "global", "name": "clearInterval", "meta": { "added": [ "v0.0.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#clearintervaltimeout\"><code>clearInterval</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`clearTimeout(timeoutObject)`", "type": "global", "name": "clearTimeout", "meta": { "added": [ "v0.0.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#cleartimeouttimeout\"><code>clearTimeout</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`console`", "name": "`console`", "meta": { "added": [ "v0.1.100" ], "changes": [] }, "type": "global", "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object\" class=\"type\"><Object></a></li>\n</ul>\n<p>Used to print to stdout and stderr. See the <a href=\"console.html\"><code>console</code></a> section.</p>" }, { "textRaw": "`CustomEvent`", "name": "`CustomEvent`", "meta": { "added": [ "v16.17.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the\n[`--experimental-global-customevent`][] CLI flag.", "type": "global", "desc": "<p>A browser-compatible implementation of the <a href=\"https://dom.spec.whatwg.org/#customevent\"><code>CustomEvent</code> Web API</a>.</p>" }, { "textRaw": "`Event`", "name": "`Event`", "meta": { "added": [ "v15.0.0" ], "changes": [ { "version": "v15.4.0", "pr-url": "https://github.com/nodejs/node/pull/35949", "description": "No longer experimental." } ] }, "type": "global", "desc": "<p>A browser-compatible implementation of the <code>Event</code> class. See\n<a href=\"events.html#eventtarget-and-event-api\"><code>EventTarget</code> and <code>Event</code> API</a> for more details.</p>" }, { "textRaw": "`EventTarget`", "name": "`EventTarget`", "meta": { "added": [ "v15.0.0" ], "changes": [ { "version": "v15.4.0", "pr-url": "https://github.com/nodejs/node/pull/35949", "description": "No longer experimental." } ] }, "type": "global", "desc": "<p>A browser-compatible implementation of the <code>EventTarget</code> class. See\n<a href=\"events.html#eventtarget-and-event-api\"><code>EventTarget</code> and <code>Event</code> API</a> for more details.</p>" }, { "textRaw": "`global`", "name": "`global`", "meta": { "added": [ "v0.1.27" ], "changes": [] }, "type": "global", "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object\" class=\"type\"><Object></a> The global namespace object.</li>\n</ul>\n<p>In browsers, the top-level scope is the global scope. This means that\nwithin the browser <code>var something</code> will define a new global variable. In\nNode.js this is different. The top-level scope is not the global scope;\n<code>var something</code> inside a Node.js module will be local to that module.</p>" }, { "textRaw": "`MessageChannel`", "name": "`MessageChannel`", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The <code>MessageChannel</code> class. See <a href=\"worker_threads.html#class-messagechannel\"><code>MessageChannel</code></a> for more details.</p>" }, { "textRaw": "`MessageEvent`", "name": "`MessageEvent`", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The <code>MessageEvent</code> class. See <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/MessageEvent/MessageEvent\"><code>MessageEvent</code></a> for more details.</p>" }, { "textRaw": "`MessagePort`", "name": "`MessagePort`", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The <code>MessagePort</code> class. See <a href=\"worker_threads.html#class-messageport\"><code>MessagePort</code></a> for more details.</p>" }, { "textRaw": "`process`", "name": "`process`", "meta": { "added": [ "v0.1.7" ], "changes": [] }, "type": "global", "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object\" class=\"type\"><Object></a></li>\n</ul>\n<p>The process object. See the <a href=\"process.html#process\"><code>process</code> object</a> section.</p>" }, { "textRaw": "`queueMicrotask(callback)`", "type": "global", "name": "queueMicrotask", "meta": { "added": [ "v11.0.0" ], "changes": [] }, "desc": "<ul>\n<li><code>callback</code> <a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function\" class=\"type\"><Function></a> Function to be queued.</li>\n</ul>\n<p>The <code>queueMicrotask()</code> method queues a microtask to invoke <code>callback</code>. If\n<code>callback</code> throws an exception, the <a href=\"process.html#process\"><code>process</code> object</a> <code>'uncaughtException'</code>\nevent will be emitted.</p>\n<p>The microtask queue is managed by V8 and may be used in a similar manner to\nthe <a href=\"process.html#processnexttickcallback-args\"><code>process.nextTick()</code></a> queue, which is managed by Node.js. The\n<code>process.nextTick()</code> queue is always processed before the microtask queue\nwithin each turn of the Node.js event loop.</p>\n<pre><code class=\"language-js\">// Here, `queueMicrotask()` is used to ensure the 'load' event is always\n// emitted asynchronously, and therefore consistently. Using\n// `process.nextTick()` here would result in the 'load' event always emitting\n// before any other promise jobs.\n\nDataHandler.prototype.load = async function load(key) {\n const hit = this._cache.get(key);\n if (hit !== undefined) {\n queueMicrotask(() => {\n this.emit('load', hit);\n });\n return;\n }\n\n const data = await fetchData(key);\n this._cache.set(key, data);\n this.emit('load', data);\n};\n</code></pre>" }, { "textRaw": "`setImmediate(callback[, ...args])`", "type": "global", "name": "setImmediate", "meta": { "added": [ "v0.9.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#setimmediatecallback-args\"><code>setImmediate</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`setInterval(callback, delay[, ...args])`", "type": "global", "name": "setInterval", "meta": { "added": [ "v0.0.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#setintervalcallback-delay-args\"><code>setInterval</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`setTimeout(callback, delay[, ...args])`", "type": "global", "name": "setTimeout", "meta": { "added": [ "v0.0.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#settimeoutcallback-delay-args\"><code>setTimeout</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`TextDecoder`", "name": "`TextDecoder`", "meta": { "added": [ "v11.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The WHATWG <code>TextDecoder</code> class. See the <a href=\"util.html#class-utiltextdecoder\"><code>TextDecoder</code></a> section.</p>" }, { "textRaw": "`TextEncoder`", "name": "`TextEncoder`", "meta": { "added": [ "v11.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The WHATWG <code>TextEncoder</code> class. See the <a href=\"util.html#class-utiltextencoder\"><code>TextEncoder</code></a> section.</p>" }, { "textRaw": "`URL`", "name": "`URL`", "meta": { "added": [ "v10.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The WHATWG <code>URL</code> class. See the <a href=\"url.html#class-url\"><code>URL</code></a> section.</p>" }, { "textRaw": "`URLSearchParams`", "name": "`URLSearchParams`", "meta": { "added": [ "v10.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The WHATWG <code>URLSearchParams</code> class. See the <a href=\"url.html#class-urlsearchparams\"><code>URLSearchParams</code></a> section.</p>" }, { "textRaw": "`WebAssembly`", "name": "`WebAssembly`", "meta": { "added": [ "v8.0.0" ], "changes": [] }, "type": "global", "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object\" class=\"type\"><Object></a></li>\n</ul>\n<p>The object that acts as the namespace for all W3C\n<a href=\"https://webassembly.org\">WebAssembly</a> related functionality. See the\n<a href=\"https://developer.mozilla.org/en-US/docs/WebAssembly\">Mozilla Developer Network</a> for usage and compatibility.</p>" } ], "methods": [ { "textRaw": "`atob(data)`", "type": "method", "name": "atob", "meta": { "added": [ "v16.0.0" ], "changes": [] }, "stability": 3, "stabilityText": "Legacy. Use `Buffer.from(data, 'base64')` instead.", "signatures": [ { "params": [] } ], "desc": "<p>Global alias for <a href=\"buffer.html#bufferatobdata\"><code>buffer.atob()</code></a>.</p>" }, { "textRaw": "`btoa(data)`", "type": "method", "name": "btoa", "meta": { "added": [ "v16.0.0" ], "changes": [] }, "stability": 3, "stabilityText": "Legacy. Use `buf.toString('base64')` instead.", "signatures": [ { "params": [] } ], "desc": "<p>Global alias for <a href=\"buffer.html#bufferbtoadata\"><code>buffer.btoa()</code></a>.</p>" }, { "textRaw": "`require()`", "type": "method", "name": "require", "signatures": [ { "params": [] } ], "desc": "<p>This variable may appear to be global but is not. See <a href=\"modules.html#requireid\"><code>require()</code></a>.</p>" } ], "miscs": [ { "textRaw": "Global objects", "name": "Global objects", "introduced_in": "v0.10.0", "type": "misc", "desc": "<p>These objects are available in all modules. The following variables may appear\nto be global but are not. They exist only in the scope of modules, see the\n<a href=\"modules.html\">module system documentation</a>:</p>\n<ul>\n<li><a href=\"modules.html#__dirname\"><code>__dirname</code></a></li>\n<li><a href=\"modules.html#__filename\"><code>__filename</code></a></li>\n<li><a href=\"modules.html#exports\"><code>exports</code></a></li>\n<li><a href=\"modules.html#module\"><code>module</code></a></li>\n<li><a href=\"modules.html#requireid\"><code>require()</code></a></li>\n</ul>\n<p>The objects listed here are specific to Node.js. There are <a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects\">built-in objects</a>\nthat are part of the JavaScript language itself, which are also globally\naccessible.</p>", "globals": [ { "textRaw": "Class: `AbortController`", "type": "global", "name": "AbortController", "meta": { "added": [ "v15.0.0" ], "changes": [ { "version": "v15.4.0", "pr-url": "https://github.com/nodejs/node/pull/35949", "description": "No longer experimental." } ] }, "desc": "<p>A utility class used to signal cancelation in selected <code>Promise</code>-based APIs.\nThe API is based on the Web API <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/AbortController\"><code>AbortController</code></a>.</p>\n<pre><code class=\"language-js\">const ac = new AbortController();\n\nac.signal.addEventListener('abort', () => console.log('Aborted!'),\n { once: true });\n\nac.abort();\n\nconsole.log(ac.signal.aborted); // Prints True\n</code></pre>", "methods": [ { "textRaw": "`abortController.abort([reason])`", "type": "method", "name": "abort", "meta": { "added": [ "v15.0.0", "v14.17.0" ], "changes": [ { "version": "v16.14.0", "pr-url": "https://github.com/nodejs/node/pull/40807", "description": "Added the new optional reason argument." } ] }, "signatures": [ { "params": [ { "textRaw": "`reason` {any} An optional reason, retrievable on the `AbortSignal`'s `reason` property.", "name": "reason", "type": "any", "desc": "An optional reason, retrievable on the `AbortSignal`'s `reason` property." } ] } ], "desc": "<p>Triggers the abort signal, causing the <code>abortController.signal</code> to emit\nthe <code>'abort'</code> event.</p>" } ], "properties": [ { "textRaw": "`signal` Type: {AbortSignal}", "type": "AbortSignal", "name": "Type", "meta": { "added": [ "v15.0.0" ], "changes": [] } } ], "classes": [ { "textRaw": "Class: `AbortSignal`", "type": "class", "name": "AbortSignal", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "desc": "<ul>\n<li>Extends: <a href=\"events.html#class-eventtarget\" class=\"type\"><EventTarget></a></li>\n</ul>\n<p>The <code>AbortSignal</code> is used to notify observers when the\n<code>abortController.abort()</code> method is called.</p>", "classMethods": [ { "textRaw": "Static method: `AbortSignal.abort([reason])`", "type": "classMethod", "name": "abort", "meta": { "added": [ "v15.12.0", "v14.17.0" ], "changes": [ { "version": "v16.14.0", "pr-url": "https://github.com/nodejs/node/pull/40807", "description": "Added the new optional reason argument." } ] }, "signatures": [ { "return": { "textRaw": "Returns: {AbortSignal}", "name": "return", "type": "AbortSignal" }, "params": [ { "textRaw": "`reason`: {any}", "name": "reason", "type": "any" } ] } ], "desc": "<p>Returns a new already aborted <code>AbortSignal</code>.</p>" }, { "textRaw": "Static method: `AbortSignal.timeout(delay)`", "type": "classMethod", "name": "timeout", "meta": { "added": [ "v16.14.0" ], "changes": [] }, "signatures": [ { "params": [ { "textRaw": "`delay` {number} The number of milliseconds to wait before triggering the AbortSignal.", "name": "delay", "type": "number", "desc": "The number of milliseconds to wait before triggering the AbortSignal." } ] } ], "desc": "<p>Returns a new <code>AbortSignal</code> which will be aborted in <code>delay</code> milliseconds.</p>" } ], "events": [ { "textRaw": "Event: `'abort'`", "type": "event", "name": "abort", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "params": [], "desc": "<p>The <code>'abort'</code> event is emitted when the <code>abortController.abort()</code> method\nis called. The callback is invoked with a single object argument with a\nsingle <code>type</code> property set to <code>'abort'</code>:</p>\n<pre><code class=\"language-js\">const ac = new AbortController();\n\n// Use either the onabort property...\nac.signal.onabort = () => console.log('aborted!');\n\n// Or the EventTarget API...\nac.signal.addEventListener('abort', (event) => {\n console.log(event.type); // Prints 'abort'\n}, { once: true });\n\nac.abort();\n</code></pre>\n<p>The <code>AbortController</code> with which the <code>AbortSignal</code> is associated will only\never trigger the <code>'abort'</code> event once. We recommended that code check\nthat the <code>abortSignal.aborted</code> attribute is <code>false</code> before adding an <code>'abort'</code>\nevent listener.</p>\n<p>Any event listeners attached to the <code>AbortSignal</code> should use the\n<code>{ once: true }</code> option (or, if using the <code>EventEmitter</code> APIs to attach a\nlistener, use the <code>once()</code> method) to ensure that the event listener is\nremoved as soon as the <code>'abort'</code> event is handled. Failure to do so may\nresult in memory leaks.</p>" } ], "properties": [ { "textRaw": "`aborted` Type: {boolean} True after the `AbortController` has been aborted.", "type": "boolean", "name": "Type", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "desc": "True after the `AbortController` has been aborted." }, { "textRaw": "`onabort` Type: {Function}", "type": "Function", "name": "Type", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "desc": "<p>An optional callback function that may be set by user code to be notified\nwhen the <code>abortController.abort()</code> function has been called.</p>" }, { "textRaw": "`reason` Type: {any}", "type": "any", "name": "Type", "meta": { "added": [ "v16.14.0" ], "changes": [] }, "desc": "<p>An optional reason specified when the <code>AbortSignal</code> was triggered.</p>\n<pre><code class=\"language-js\">const ac = new AbortController();\nac.abort(new Error('boom!'));\nconsole.log(ac.signal.reason); // Error('boom!');\n</code></pre>" } ], "methods": [ { "textRaw": "`abortSignal.throwIfAborted()`", "type": "method", "name": "throwIfAborted", "meta": { "added": [ "v16.17.0" ], "changes": [] }, "signatures": [ { "params": [] } ], "desc": "<p>If <code>abortSignal.aborted</code> is <code>true</code>, throws <code>abortSignal.reason</code>.</p>" } ] } ] }, { "textRaw": "Class: `Buffer`", "type": "global", "name": "Buffer", "meta": { "added": [ "v0.1.103" ], "changes": [] }, "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function\" class=\"type\"><Function></a></li>\n</ul>\n<p>Used to handle binary data. See the <a href=\"buffer.html\">buffer section</a>.</p>" }, { "textRaw": "`clearImmediate(immediateObject)`", "type": "global", "name": "clearImmediate", "meta": { "added": [ "v0.9.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#clearimmediateimmediate\"><code>clearImmediate</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`clearInterval(intervalObject)`", "type": "global", "name": "clearInterval", "meta": { "added": [ "v0.0.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#clearintervaltimeout\"><code>clearInterval</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`clearTimeout(timeoutObject)`", "type": "global", "name": "clearTimeout", "meta": { "added": [ "v0.0.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#cleartimeouttimeout\"><code>clearTimeout</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`console`", "name": "`console`", "meta": { "added": [ "v0.1.100" ], "changes": [] }, "type": "global", "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object\" class=\"type\"><Object></a></li>\n</ul>\n<p>Used to print to stdout and stderr. See the <a href=\"console.html\"><code>console</code></a> section.</p>" }, { "textRaw": "`CustomEvent`", "name": "`CustomEvent`", "meta": { "added": [ "v16.17.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the\n[`--experimental-global-customevent`][] CLI flag.", "type": "global", "desc": "<p>A browser-compatible implementation of the <a href=\"https://dom.spec.whatwg.org/#customevent\"><code>CustomEvent</code> Web API</a>.</p>" }, { "textRaw": "`Event`", "name": "`Event`", "meta": { "added": [ "v15.0.0" ], "changes": [ { "version": "v15.4.0", "pr-url": "https://github.com/nodejs/node/pull/35949", "description": "No longer experimental." } ] }, "type": "global", "desc": "<p>A browser-compatible implementation of the <code>Event</code> class. See\n<a href=\"events.html#eventtarget-and-event-api\"><code>EventTarget</code> and <code>Event</code> API</a> for more details.</p>" }, { "textRaw": "`EventTarget`", "name": "`EventTarget`", "meta": { "added": [ "v15.0.0" ], "changes": [ { "version": "v15.4.0", "pr-url": "https://github.com/nodejs/node/pull/35949", "description": "No longer experimental." } ] }, "type": "global", "desc": "<p>A browser-compatible implementation of the <code>EventTarget</code> class. See\n<a href=\"events.html#eventtarget-and-event-api\"><code>EventTarget</code> and <code>Event</code> API</a> for more details.</p>" }, { "textRaw": "`global`", "name": "`global`", "meta": { "added": [ "v0.1.27" ], "changes": [] }, "type": "global", "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object\" class=\"type\"><Object></a> The global namespace object.</li>\n</ul>\n<p>In browsers, the top-level scope is the global scope. This means that\nwithin the browser <code>var something</code> will define a new global variable. In\nNode.js this is different. The top-level scope is not the global scope;\n<code>var something</code> inside a Node.js module will be local to that module.</p>" }, { "textRaw": "`MessageChannel`", "name": "`MessageChannel`", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The <code>MessageChannel</code> class. See <a href=\"worker_threads.html#class-messagechannel\"><code>MessageChannel</code></a> for more details.</p>" }, { "textRaw": "`MessageEvent`", "name": "`MessageEvent`", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The <code>MessageEvent</code> class. See <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/MessageEvent/MessageEvent\"><code>MessageEvent</code></a> for more details.</p>" }, { "textRaw": "`MessagePort`", "name": "`MessagePort`", "meta": { "added": [ "v15.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The <code>MessagePort</code> class. See <a href=\"worker_threads.html#class-messageport\"><code>MessagePort</code></a> for more details.</p>" }, { "textRaw": "`process`", "name": "`process`", "meta": { "added": [ "v0.1.7" ], "changes": [] }, "type": "global", "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object\" class=\"type\"><Object></a></li>\n</ul>\n<p>The process object. See the <a href=\"process.html#process\"><code>process</code> object</a> section.</p>" }, { "textRaw": "`queueMicrotask(callback)`", "type": "global", "name": "queueMicrotask", "meta": { "added": [ "v11.0.0" ], "changes": [] }, "desc": "<ul>\n<li><code>callback</code> <a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function\" class=\"type\"><Function></a> Function to be queued.</li>\n</ul>\n<p>The <code>queueMicrotask()</code> method queues a microtask to invoke <code>callback</code>. If\n<code>callback</code> throws an exception, the <a href=\"process.html#process\"><code>process</code> object</a> <code>'uncaughtException'</code>\nevent will be emitted.</p>\n<p>The microtask queue is managed by V8 and may be used in a similar manner to\nthe <a href=\"process.html#processnexttickcallback-args\"><code>process.nextTick()</code></a> queue, which is managed by Node.js. The\n<code>process.nextTick()</code> queue is always processed before the microtask queue\nwithin each turn of the Node.js event loop.</p>\n<pre><code class=\"language-js\">// Here, `queueMicrotask()` is used to ensure the 'load' event is always\n// emitted asynchronously, and therefore consistently. Using\n// `process.nextTick()` here would result in the 'load' event always emitting\n// before any other promise jobs.\n\nDataHandler.prototype.load = async function load(key) {\n const hit = this._cache.get(key);\n if (hit !== undefined) {\n queueMicrotask(() => {\n this.emit('load', hit);\n });\n return;\n }\n\n const data = await fetchData(key);\n this._cache.set(key, data);\n this.emit('load', data);\n};\n</code></pre>" }, { "textRaw": "`setImmediate(callback[, ...args])`", "type": "global", "name": "setImmediate", "meta": { "added": [ "v0.9.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#setimmediatecallback-args\"><code>setImmediate</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`setInterval(callback, delay[, ...args])`", "type": "global", "name": "setInterval", "meta": { "added": [ "v0.0.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#setintervalcallback-delay-args\"><code>setInterval</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`setTimeout(callback, delay[, ...args])`", "type": "global", "name": "setTimeout", "meta": { "added": [ "v0.0.1" ], "changes": [] }, "desc": "<p><a href=\"timers.html#settimeoutcallback-delay-args\"><code>setTimeout</code></a> is described in the <a href=\"timers.html\">timers</a> section.</p>" }, { "textRaw": "`TextDecoder`", "name": "`TextDecoder`", "meta": { "added": [ "v11.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The WHATWG <code>TextDecoder</code> class. See the <a href=\"util.html#class-utiltextdecoder\"><code>TextDecoder</code></a> section.</p>" }, { "textRaw": "`TextEncoder`", "name": "`TextEncoder`", "meta": { "added": [ "v11.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The WHATWG <code>TextEncoder</code> class. See the <a href=\"util.html#class-utiltextencoder\"><code>TextEncoder</code></a> section.</p>" }, { "textRaw": "`URL`", "name": "`URL`", "meta": { "added": [ "v10.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The WHATWG <code>URL</code> class. See the <a href=\"url.html#class-url\"><code>URL</code></a> section.</p>" }, { "textRaw": "`URLSearchParams`", "name": "`URLSearchParams`", "meta": { "added": [ "v10.0.0" ], "changes": [] }, "type": "global", "desc": "<p>The WHATWG <code>URLSearchParams</code> class. See the <a href=\"url.html#class-urlsearchparams\"><code>URLSearchParams</code></a> section.</p>" }, { "textRaw": "`WebAssembly`", "name": "`WebAssembly`", "meta": { "added": [ "v8.0.0" ], "changes": [] }, "type": "global", "desc": "<ul>\n<li><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object\" class=\"type\"><Object></a></li>\n</ul>\n<p>The object that acts as the namespace for all W3C\n<a href=\"https://webassembly.org\">WebAssembly</a> related functionality. See the\n<a href=\"https://developer.mozilla.org/en-US/docs/WebAssembly\">Mozilla Developer Network</a> for usage and compatibility.</p>" } ], "miscs": [ { "textRaw": "`__dirname`", "name": "`__dirname`", "desc": "<p>This variable may appear to be global but is not. See <a href=\"modules.html#__dirname\"><code>__dirname</code></a>.</p>", "type": "misc", "displayName": "`__dirname`" }, { "textRaw": "`__filename`", "name": "`__filename`", "desc": "<p>This variable may appear to be global but is not. See <a href=\"modules.html#__filename\"><code>__filename</code></a>.</p>", "type": "misc", "displayName": "`__filename`" }, { "textRaw": "`Crypto`", "name": "`crypto`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the\n[`--experimental-global-webcrypto`][] CLI flag.", "desc": "<p>A browser-compatible implementation of <a href=\"webcrypto.html#class-crypto\" class=\"type\"><Crypto></a>. This global is available\nonly if the Node.js binary was compiled with including support for the\n<code>node:crypto</code> module.</p>", "type": "misc", "displayName": "`Crypto`" }, { "textRaw": "`crypto`", "name": "`crypto`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the\n[`--experimental-global-webcrypto`][] CLI flag.", "desc": "<p>A browser-compatible implementation of the <a href=\"webcrypto.html\">Web Crypto API</a>.</p>", "type": "misc", "displayName": "`crypto`" }, { "textRaw": "`CryptoKey`", "name": "`cryptokey`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the\n[`--experimental-global-webcrypto`][] CLI flag.", "desc": "<p>A browser-compatible implementation of <a href=\"webcrypto.html#class-cryptokey\" class=\"type\"><CryptoKey></a>. This global is available\nonly if the Node.js binary was compiled with including support for the\n<code>node:crypto</code> module.</p>", "type": "misc", "displayName": "`CryptoKey`" }, { "textRaw": "`exports`", "name": "`exports`", "desc": "<p>This variable may appear to be global but is not. See <a href=\"modules.html#exports\"><code>exports</code></a>.</p>", "type": "misc", "displayName": "`exports`" }, { "textRaw": "`fetch`", "name": "`fetch`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the [`--experimental-fetch`][]\nCLI flag.", "desc": "<p>A browser-compatible implementation of the <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/fetch\"><code>fetch()</code></a> function.</p>", "type": "misc", "displayName": "`fetch`" }, { "textRaw": "Class `FormData`", "name": "class_`formdata`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the [`--experimental-fetch`][]\nCLI flag.", "desc": "<p>A browser-compatible implementation of <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/FormData\" class=\"type\"><FormData></a>.</p>", "type": "misc", "displayName": "Class `FormData`" }, { "textRaw": "Class `Headers`", "name": "class_`headers`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the [`--experimental-fetch`][]\nCLI flag.", "desc": "<p>A browser-compatible implementation of <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/Headers\" class=\"type\"><Headers></a>.</p>", "type": "misc", "displayName": "Class `Headers`" }, { "textRaw": "`module`", "name": "`module`", "desc": "<p>This variable may appear to be global but is not. See <a href=\"modules.html#module\"><code>module</code></a>.</p>", "type": "misc", "displayName": "`module`" }, { "textRaw": "`performance`", "name": "`performance`", "meta": { "added": [ "v16.0.0" ], "changes": [] }, "desc": "<p>The <a href=\"perf_hooks.html#perf_hooksperformance\"><code>perf_hooks.performance</code></a> object.</p>", "type": "misc", "displayName": "`performance`" }, { "textRaw": "`Response`", "name": "`response`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the [`--experimental-fetch`][]\nCLI flag.", "desc": "<p>A browser-compatible implementation of <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/Response\" class=\"type\"><Response></a>.</p>", "type": "misc", "displayName": "`Response`" }, { "textRaw": "`Request`", "name": "`request`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the [`--experimental-fetch`][]\nCLI flag.", "desc": "<p>A browser-compatible implementation of <a href=\"https://developer.mozilla.org/en-US/docs/Web/API/Request\" class=\"type\"><Request></a>.</p>", "type": "misc", "displayName": "`Request`" }, { "textRaw": "`SubtleCrypto`", "name": "`subtlecrypto`", "meta": { "added": [ "v16.15.0" ], "changes": [] }, "stability": 1, "stabilityText": "Experimental. Enable this API with the\n[`--experimental-global-webcrypto`][] CLI flag.", "desc": "<p>A browser-compatible implementation of <a href=\"webcrypto.html#class-subtlecrypto\" class=\"type\"><SubtleCrypto></a>. This global is available\nonly if the Node.js binary was compiled with including support for the\n<code>node:crypto</code> module.</p>", "type": "misc", "displayName": "`SubtleCrypto`" } ], "methods": [ { "textRaw": "`atob(data)`", "type": "method", "name": "atob", "meta": { "added": [ "v16.0.0" ], "changes": [] }, "stability": 3, "stabilityText": "Legacy. Use `Buffer.from(data, 'base64')` instead.", "signatures": [ { "params": [] } ], "desc": "<p>Global alias for <a href=\"buffer.html#bufferatobdata\"><code>buffer.atob()</code></a>.</p>" }, { "textRaw": "`btoa(data)`", "type": "method", "name": "btoa", "meta": { "added": [ "v16.0.0" ], "changes": [] }, "stability": 3, "stabilityText": "Legacy. Use `buf.toString('base64')` instead.", "signatures": [ { "params": [] } ], "desc": "<p>Global alias for <a href=\"buffer.html#bufferbtoadata\"><code>buffer.btoa()</code></a>.</p>" }, { "textRaw": "`require()`", "type": "method", "name": "require", "signatures": [ { "params": [] } ], "desc": "<p>This variable may appear to be global but is not. See <a href=\"modules.html#requireid\"><code>require()</code></a>.</p>" } ] } ] }