143 lines
3.8 KiB
TypeScript
143 lines
3.8 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. 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.io/license
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*/
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/*
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* Usage:
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*
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* function supportsOnClick() {
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* const div = document.createElement('div');
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* const clickPropDesc = Object.getOwnPropertyDescriptor(div, 'onclick');
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* return !(EventTarget &&
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* div instanceof EventTarget &&
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* clickPropDesc && clickPropDesc.value === null);
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* }
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* (<any>supportsOnClick).message = 'Supports Element#onclick patching';
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*
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*
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* ifEnvSupports(supportsOnClick, function() { ... });
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*/
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import {isNode, zoneSymbol} from '../lib/common/utils';
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// Re-export for convenience.
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export {zoneSymbol};
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declare const global: any;
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export function ifEnvSupports(test: any, block: Function): () => void {
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return _ifEnvSupports(test, block);
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}
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export function ifEnvSupportsWithDone(test: any, block: Function): (done: Function) => void {
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return _ifEnvSupports(test, block, true);
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}
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function _ifEnvSupports(test: any, block: Function, withDone = false) {
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if (withDone) {
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return function(done?: Function) { _runTest(test, block, done); };
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} else {
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return function() { _runTest(test, block, undefined); };
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}
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}
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function _runTest(test: any, block: Function, done?: Function) {
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const message = (test.message || test.name || test);
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if (typeof test === 'string' ? !!global[test] : test()) {
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if (done) {
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block(done);
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} else {
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block();
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}
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} else {
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console.log('WARNING: skipping ' + message + ' tests (missing this API)');
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done && done();
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}
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}
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export function supportPatchXHROnProperty() {
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let desc = Object.getOwnPropertyDescriptor(XMLHttpRequest.prototype, 'onload');
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if (!desc && (window as any)['XMLHttpRequestEventTarget']) {
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desc = Object.getOwnPropertyDescriptor(global['XMLHttpRequestEventTarget'].prototype, 'onload');
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}
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if (!desc || !desc.configurable) {
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return false;
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}
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return true;
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}
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let supportSetErrorStack = true;
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export function isSupportSetErrorStack() {
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try {
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throw new Error('test');
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} catch (err) {
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try {
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err.stack = 'new stack';
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supportSetErrorStack = err.stack === 'new stack';
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} catch (error) {
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supportSetErrorStack = false;
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}
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}
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return supportSetErrorStack;
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}
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(isSupportSetErrorStack as any).message = 'supportSetErrorStack';
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export function asyncTest(this: unknown, testFn: Function, zone: Zone = Zone.current) {
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const AsyncTestZoneSpec = (Zone as any)['AsyncTestZoneSpec'];
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return (done: Function) => {
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let asyncTestZone: Zone =
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zone.fork(new AsyncTestZoneSpec(() => {}, (error: Error) => { fail(error); }, 'asyncTest'));
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asyncTestZone.run(testFn, this, [done]);
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};
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}
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export function getIEVersion() {
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const userAgent = navigator.userAgent.toLowerCase();
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if (userAgent.indexOf('msie') != -1) {
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return parseInt(userAgent.split('msie')[1]);
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}
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return null;
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}
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export function isFirefox() {
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const userAgent = navigator.userAgent.toLowerCase();
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if (userAgent.indexOf('firefox') != -1) {
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return true;
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}
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return false;
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}
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export function isSafari() {
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const userAgent = navigator.userAgent.toLowerCase();
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if (userAgent.indexOf('safari') != -1) {
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return true;
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}
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return false;
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}
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export function isEdge() {
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const userAgent = navigator.userAgent.toLowerCase();
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return userAgent.indexOf('edge') !== -1;
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}
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export function getEdgeVersion() {
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const ua = navigator.userAgent.toLowerCase();
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const edge = ua.indexOf('edge/');
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if (edge === -1) {
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return -1;
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}
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return parseInt(ua.substring(edge + 5, ua.indexOf('.', edge)), 10);
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}
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export function isPhantomJS() {
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if (isNode) {
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return false;
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}
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const ua = navigator.userAgent.toLowerCase();
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return ua.indexOf('phantomjs') !== -1;
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}
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