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browser.js
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browser.js
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'use strict';
const {
ObjectDefineProperty,
globalThis,
} = primordials;
const {
defineOperation,
exposeInterface,
lazyDOMExceptionClass,
} = require('internal/util');
const config = internalBinding('config');
// Override global console from the one provided by the VM
// to the one implemented by Node.js
// https://console.spec.whatwg.org/#console-namespace
exposeNamespace(globalThis, 'console',
createGlobalConsole(globalThis.console));
const { URL, URLSearchParams } = require('internal/url');
// https://url.spec.whatwg.org/#url
exposeInterface(globalThis, 'URL', URL);
// https://url.spec.whatwg.org/#urlsearchparams
exposeInterface(globalThis, 'URLSearchParams', URLSearchParams);
exposeGetterAndSetter(globalThis,
'DOMException',
lazyDOMExceptionClass,
(value) => {
exposeInterface(globalThis, 'DOMException', value);
});
const {
TextEncoder, TextDecoder
} = require('internal/encoding');
// https://encoding.spec.whatwg.org/#textencoder
exposeInterface(globalThis, 'TextEncoder', TextEncoder);
// https://encoding.spec.whatwg.org/#textdecoder
exposeInterface(globalThis, 'TextDecoder', TextDecoder);
const {
AbortController,
AbortSignal,
} = require('internal/abort_controller');
exposeInterface(globalThis, 'AbortController', AbortController);
exposeInterface(globalThis, 'AbortSignal', AbortSignal);
const {
EventTarget,
Event,
} = require('internal/event_target');
exposeInterface(globalThis, 'EventTarget', EventTarget);
exposeInterface(globalThis, 'Event', Event);
const {
MessageChannel,
MessagePort,
MessageEvent,
} = require('internal/worker/io');
exposeInterface(globalThis, 'MessageChannel', MessageChannel);
exposeInterface(globalThis, 'MessagePort', MessagePort);
exposeInterface(globalThis, 'MessageEvent', MessageEvent);
// https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope
const timers = require('timers');
defineOperation(globalThis, 'clearInterval', timers.clearInterval);
defineOperation(globalThis, 'clearTimeout', timers.clearTimeout);
defineOperation(globalThis, 'setInterval', timers.setInterval);
defineOperation(globalThis, 'setTimeout', timers.setTimeout);
// https://www.w3.org/TR/hr-time-2/#the-performance-attribute
defineReplacableAttribute(globalThis, 'performance',
require('perf_hooks').performance);
function createGlobalConsole(consoleFromVM) {
const consoleFromNode =
require('internal/console/global');
if (config.hasInspector) {
const inspector = require('internal/util/inspector');
// This will be exposed by `require('inspector').console` later.
inspector.consoleFromVM = consoleFromVM;
// TODO(joyeecheung): postpone this until the first time inspector
// is activated.
inspector.wrapConsole(consoleFromNode, consoleFromVM);
const { setConsoleExtensionInstaller } = internalBinding('inspector');
// Setup inspector command line API.
setConsoleExtensionInstaller(inspector.installConsoleExtensions);
}
return consoleFromNode;
}
// https://heycam.github.io/webidl/#es-namespaces
function exposeNamespace(target, name, namespaceObject) {
ObjectDefineProperty(target, name, {
writable: true,
enumerable: false,
configurable: true,
value: namespaceObject
});
}
function exposeGetterAndSetter(target, name, getter, setter = undefined) {
ObjectDefineProperty(target, name, {
enumerable: false,
configurable: true,
get: getter,
set: setter,
});
}
// https://heycam.github.io/webidl/#Replaceable
function defineReplacableAttribute(target, name, value) {
ObjectDefineProperty(target, name, {
writable: true,
enumerable: true,
configurable: true,
value,
});
}