How to use rewriteJsSourceMapAsync method in Cypress

Best JavaScript code snippet using cypress

deferred-source-map-cache.js

Source:deferred-source-map-cache.js

1"use strict";2var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {3    if (k2 === undefined) k2 = k;4    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });5}) : (function(o, m, k, k2) {6    if (k2 === undefined) k2 = k;7    o[k2] = m[k];8}));9var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {10    Object.defineProperty(o, "default", { enumerable: true, value: v });11}) : function(o, v) {12    o["default"] = v;13});14var __importStar = (this && this.__importStar) || function (mod) {15    if (mod && mod.__esModule) return mod;16    var result = {};17    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);18    __setModuleDefault(result, mod);19    return result;20};21var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {22    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }23    return new (P || (P = Promise))(function (resolve, reject) {24        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }25        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }26        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }27        step((generator = generator.apply(thisArg, _arguments || [])).next());28    });29};30var __importDefault = (this && this.__importDefault) || function (mod) {31    return (mod && mod.__esModule) ? mod : { "default": mod };32};33Object.defineProperty(exports, "__esModule", { value: true });34exports.DeferredSourceMapCache = void 0;35const lodash_1 = __importDefault(require("lodash"));36const debug_1 = __importDefault(require("debug"));37const async_rewriters_1 = require("./async-rewriters");38const sourceMaps = __importStar(require("./util/source-maps"));39const url_1 = __importDefault(require("url"));40const debug = (0, debug_1.default)('cypress:rewriter:deferred-source-map-cache');41const caseInsensitiveGet = (obj, lowercaseProperty) => {42    for (let key of Object.keys(obj)) {43        if (key.toLowerCase() === lowercaseProperty) {44            return obj[key];45        }46    }47};48const getSourceMapHeader = (headers) => {49    // sourcemap has precedence50    // @see https://searchfox.org/mozilla-central/rev/dc4560dcaafd79375b9411fdbbaaebb0a59a93ac/devtools/shared/DevToolsUtils.js#611-61951    return caseInsensitiveGet(headers, 'sourcemap') || caseInsensitiveGet(headers, 'x-sourcemap');52};53/**54 * Holds on to data necessary to rewrite user JS to maybe generate a sourcemap at a later time,55 * potentially composed with the user's own sourcemap if one is present.56 *57 * The purpose of this is to avoid wasting CPU time and network I/O on generating, composing, and58 * sending a sourcemap along with every single rewritten JS snippet, since the source maps are59 * going to be unused and discarded most of the time.60 */61class DeferredSourceMapCache {62    constructor(requestLib) {63        this._idCounter = 0;64        this.requests = [];65        this.defer = (request) => {66            if (this._getRequestById(request.uniqueId)) {67                // prevent duplicate uniqueIds from ever existing68                throw new Error(`Deferred sourcemap key "${request.uniqueId}" is not unique`);69            }70            // remove existing requests for this URL since they will not be loaded again71            this._removeRequestsByUrl(request.url);72            this.requests.push(request);73        };74        this.requestLib = requestLib;75    }76    _removeRequestsByUrl(url) {77        lodash_1.default.remove(this.requests, { url });78    }79    _getRequestById(uniqueId) {80        return lodash_1.default.find(this.requests, { uniqueId });81    }82    _getInputSourceMap(request, headers) {83        return __awaiter(this, void 0, void 0, function* () {84            // prefer inline sourceMappingURL over headers85            const sourceMapUrl = sourceMaps.getMappingUrl(request.js) || getSourceMapHeader(request.resHeaders);86            if (!sourceMapUrl) {87                return;88            }89            // try to decode it as a base64 string90            const inline = sourceMaps.tryDecodeInlineUrl(sourceMapUrl);91            if (inline) {92                return inline;93            }94            // try to load it from the web95            const req = {96                url: url_1.default.resolve(request.url, sourceMapUrl),97                // TODO: this assumes that the sourcemap is on the same base domain, so it's safe to send the same headers98                // the browser sent for this sourcemap request - but if sourcemap is on a different domain, this will not99                // be true. need to use browser's cookiejar instead.100                headers,101                timeout: 5000,102            };103            try {104                const { body } = yield this.requestLib(req, true);105                return body;106            }107            catch (error) {108                // eslint-disable-next-line no-console109                debug('got an error loading user-provided sourcemap, serving proxy-generated sourcemap only %o', { url: request.url, headers, error });110            }111        });112    }113    resolve(uniqueId, headers) {114        return __awaiter(this, void 0, void 0, function* () {115            const request = this._getRequestById(uniqueId);116            if (!request) {117                throw new Error(`Missing request with ID '${uniqueId}'`);118            }119            if (request.sourceMap) {120                return request.sourceMap;121            }122            if (!request.js) {123                throw new Error('Missing JS for source map rewrite');124            }125            const inputSourceMap = yield this._getInputSourceMap(request, headers);126            // cache the sourceMap so we don't need to regenerate it127            request.sourceMap = yield (0, async_rewriters_1.rewriteJsSourceMapAsync)(request.url, request.js, inputSourceMap);128            delete request.js; // won't need this again129            delete request.resHeaders;130            return request.sourceMap;131        });132    }133}...

async-rewriters.js

Source:async-rewriters.js

...21        source: js,22    });23}24exports.rewriteJsAsync = rewriteJsAsync;25function rewriteJsSourceMapAsync(url, js, inputSourceMap) {26    return (0, threads_1.queueRewriting)({27        url,28        inputSourceMap,29        sourceMap: true,30        source: js,31    });32}...

Using AI Code Generation

1const fs = require('fs');2const cypress = require('cypress');3const sourceMap = require('source-map');4const sourceMapConsumer = new sourceMap.SourceMapConsumer(fs.readFileSync('main.js.map', 'utf8'));5const sourceMapGenerator = new sourceMap.SourceMapGenerator({ file: 'main.js' });6cypress.run({7    config: {8        onBeforeLoad: (win) => {9            win.rewriteJsSourceMapAsync = (map) => {10                sourceMapConsumer.eachMapping((mapping) => {11                    sourceMapGenerator.addMapping({12                        original: {13                        },14                        generated: {15                        },16                    });17                });18                return sourceMapGenerator.toString();19            };20        },21    },22});23it('should work', () => {24    cy.visit('index.html');25    cy.get('h1').contains('Hello World');26});

Using AI Code Generation

1describe("Test", () => {2    it("Test", () => {3        cy.get("button").click();4        cy.get("input").type("test");5        cy.get("button").click();6        cy.get("h1").should("have.text", "test");7    });8});9import { rewriteJsSourceMapAsync } from "@cypress/webpack-preprocessor";10const { addMatchImageSnapshotPlugin } = require("cypress-image-snapshot/plugin");11const webpackOptions = {12    resolve: {13    },14    module: {15            {16            },17    },18};19module.exports = (on, config) => {20    on("file:preprocessor", async (file) => {21        const options = {22        };23        return await rewriteJsSourceMapAsync(file, options);24    });25    addMatchImageSnapshotPlugin(on, config);26};27const { addMatchImageSnapshotPlugin } = require("cypress-image-snapshot/plugin");28module.exports = (on, config) => {29    addMatchImageSnapshotPlugin(on, config);30    return config;31};32{33    "compilerOptions": {34    },35}36{

Using AI Code Generation

1cy.task('rewriteJsSourceMapAsync', {2});3const { rewriteJsSourceMapAsync } = require('@cypress/source-maps')4module.exports = (on, config) => {5  on('task', {6  })7}8import '@cypress/source-maps/support'

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