121 lines
4.3 KiB
TypeScript
121 lines
4.3 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { serializeAsCallArgument, parseEvaluationResultValue } from '../isomorphic/utilityScriptSerializers';
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export class UtilityScript {
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constructor(isUnderTest: boolean) {
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if (isUnderTest)
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this._setBuiltins();
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}
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serializeAsCallArgument = serializeAsCallArgument;
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parseEvaluationResultValue = parseEvaluationResultValue;
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evaluate(isFunction: boolean | undefined, returnByValue: boolean, expression: string, argCount: number, ...argsAndHandles: any[]) {
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const args = argsAndHandles.slice(0, argCount);
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const handles = argsAndHandles.slice(argCount);
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const parameters = [];
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for (let i = 0; i < args.length; i++)
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parameters[i] = this.parseEvaluationResultValue(args[i], handles);
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// eslint-disable-next-line no-restricted-globals
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let result = globalThis.eval(expression);
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if (isFunction === true) {
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result = result(...parameters);
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} else if (isFunction === false) {
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result = result;
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} else {
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// auto detect.
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if (typeof result === 'function')
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result = result(...parameters);
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}
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return returnByValue ? this._promiseAwareJsonValueNoThrow(result) : result;
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}
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jsonValue(returnByValue: true, value: any) {
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// Special handling of undefined to work-around multi-step returnByValue handling in WebKit.
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if (Object.is(value, undefined))
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return undefined;
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return serializeAsCallArgument(value, (value: any) => ({ fallThrough: value }));
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}
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private _promiseAwareJsonValueNoThrow(value: any) {
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const safeJson = (value: any) => {
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try {
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return this.jsonValue(true, value);
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} catch (e) {
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return undefined;
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}
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};
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if (value && typeof value === 'object' && typeof value.then === 'function') {
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return (async () => {
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// By using async function we ensure that return value is a native Promise,
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// and not some overridden Promise in the page.
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// This makes Firefox and WebKit debugging protocols recognize it as a Promise,
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// properly await and return the value.
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const promiseValue = await value;
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return safeJson(promiseValue);
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})();
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}
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return safeJson(value);
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}
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private _setBuiltins() {
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// eslint-disable-next-line no-restricted-globals
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const window = (globalThis as any);
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window.builtinSetTimeout = (callback: Function, timeout: number) => {
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if (window.__pwFakeTimers?.builtin)
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return window.__pwFakeTimers.builtin.setTimeout(callback, timeout);
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return setTimeout(callback, timeout);
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};
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window.builtinClearTimeout = (id: number) => {
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if (window.__pwFakeTimers?.builtin)
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return window.__pwFakeTimers.builtin.clearTimeout(id);
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return clearTimeout(id);
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};
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window.builtinSetInterval = (callback: Function, timeout: number) => {
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if (window.__pwFakeTimers?.builtin)
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return window.__pwFakeTimers.builtin.setInterval(callback, timeout);
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return setInterval(callback, timeout);
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};
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window.builtinClearInterval = (id: number) => {
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if (window.__pwFakeTimers?.builtin)
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return window.__pwFakeTimers.builtin.clearInterval(id);
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return clearInterval(id);
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};
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window.builtinRequestAnimationFrame = (callback: FrameRequestCallback) => {
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if (window.__pwFakeTimers?.builtin)
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return window.__pwFakeTimers.builtin.requestAnimationFrame(callback);
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return requestAnimationFrame(callback);
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};
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window.builtinCancelAnimationFrame = (id: number) => {
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if (window.__pwFakeTimers?.builtin)
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return window.__pwFakeTimers.builtin.cancelAnimationFrame(id);
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return cancelAnimationFrame(id);
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};
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window.builtinDate = window.__pwFakeTimers?.builtin.Date || Date;
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window.builtinPerformance = window.__pwFakeTimers?.builtin.performance || performance;
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}
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}
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