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[Karma] Uncaught ReferenceError: sourceMapSupport is not defined #1046

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Description

@KrakenTyio

I have this issue after migration to angular 12
dev build work correctly also production
but running karma test is problem
this is still reported and than stuct, browser is open but cannot continue bc. same issue is in console

⠙ Generating browser application bundles (phase: building)...25 10 2021 18:19:48.078:WARN [karma]: No captured browser, open http://192.168.69.1:9876/
✔ Browser application bundle generation complete.
25 10 2021 18:19:52.165:WARN [karma]: No captured browser, open http://192.168.69.1:9876/

START:
Chrome 95.0.4638.54 (Linux x86_64) ERROR
  Uncaught ReferenceError: sourceMapSupport is not defined
  at node_modules/karma-source-map-support/lib/client.js:1:1
  
  ReferenceError: sourceMapSupport is not defined
      at node_modules/karma-source-map-support/lib/client.js:1:1
Chrome 95.0.4638.54 (Linux x86_64) ERROR
  Uncaught ReferenceError: sourceMapSupport is not defined
  at node_modules/karma-source-map-support/lib/client.js:1:1
  
  ReferenceError: sourceMapSupport is not defined
      at node_modules/karma-source-map-support/lib/client.js:1:1
Chrome 95.0.4638.54 (Linux x86_64) ERROR
  Uncaught ReferenceError: sourceMapSupport is not defined
  at node_modules/karma-source-map-support/lib/client.js:1:1
  
  ReferenceError: sourceMapSupport is not defined
      at node_modules/karma-source-map-support/lib/client.js:1:1

karma.conf.js

// Karma configuration file, see link for more information
// https://karma-runner.github.io/1.0/config/configuration-file.html
const webdriver = require('selenium-webdriver');

module.exports = async function (config) {
    // Get local IP for selenium runner
    const address = require('./builder/helpers').getMyIPAddress(false);

    const configuration = {
        basePath: '',
        frameworks: ['jasmine', '@angular-devkit/build-angular'],
        plugins: [
            require('karma-jasmine'),
            require('karma-chrome-launcher'),
            require('karma-selenium-webdriver-launcher'),
            require('karma-jasmine-html-reporter'),
            require('karma-coverage'),
            require('karma-junit-reporter'),
            require('karma-mocha-reporter'),
            require('@angular-devkit/build-angular/plugins/karma'),
            { 'reporter:jasmine-seed': ['type', JasmineSeedReporter] },
        ],

        reporters: ['mocha', 'coverage', 'kjhtml', 'junit', 'jasmine-seed'],

        coverageReporter: {
            reporters: [
                { type: 'html', subdir: 'html' },
                { type: 'text-summary', subdir: '.' },
                { type: 'lcovonly', subdir: '.' },
                { type: 'json', subdir: '.', file: 'coverage.json' },
            ],
            dir: './coverage',
            includeAllSources: true,
        },

        mochaReporter: {
            maxLogLines: 50,
        },

        // the default configuration
        junitReporter: {
            outputDir: './coverage',
            outputFile: './karma-junit.xml',
            suite: 'Crossuite Karma Unit',
            useBrowserName: false,
            nameFormatter: (browser, result) => {
                return result.description;
            },
            classNameFormatter: (browser, result) => {
                return result.suite[0];
            },
            // properties: {}
        },

        port: 9876,
        colors: process.env.DOCKER_EXTRA !== '--no-color',
        logLevel: config.LOG_WARN,
        // autoWatch: true, // already in parent config
        browsers: [/*'ChromeTravisCi'*/ 'Chrome'],
        // singleRun: false,  // already in parent config
        client: {
            clearContext: false, // leave Jasmine Spec Runner output visible in browser
            jasmine: {
                random: true,
                seed: '',
            },
        },
        browserDisconnectTimeout: 15 * 1000,
        browserDisconnectTolerance: 1,
        browserNoActivityTimeout: 100 * 60 * 1000,
        captureTimeout: 10 * 60 * 1000,
        restartOnFileChange: true,

        hostname: address && address.length ? address[0] : 'localhost',
        customLaunchers: {
            ChromeTravisCi: {
                base: 'ChromeHeadless',
                browserName: 'Chrome',
                flags: [
                    '--no-sandbox',
                    '--headless',
                    '--disable-gpu',
                    '--disable-web-security',
                    '--disable-translate',
                    '--disable-extensions',
                    '--disable-dev-shm-usage',
                    '--hide-scrollbars',
                    '--mute-audio',
                    // '--remote-debugging-port=9223'
                ],
            },
            ChromeSelenium: {
                base: 'SeleniumWebdriver',
                browserName: 'Chrome',
                flags: [
                    '--no-sandbox',
                    '--headless',
                    '--disable-gpu',
                    '--disable-web-security',
                    '--disable-translate',
                    '--disable-extensions',
                    '--disable-dev-shm-usage',
                    '--hide-scrollbars',
                    '--mute-audio',
                    // '--remote-debugging-port=9223'
                ],
                getDriver: function () {
                    return new webdriver.Builder()
                        .forBrowser('chrome')
                        .usingServer('http://selenium-chrome:4444/wd/hub')
                        .build();
                },
            },
        },
    };

    if (
        process.env.TRAVIS ||
        config.browsers.includes('ChromeTravisCi') ||
        config.browsers.includes('ChromeSelenium')
    ) {
        if (config.browsers.includes('ChromeSelenium')) {
            configuration.browsers = ['ChromeSelenium'];
        } else {
            configuration.browsers = ['ChromeTravisCi'];
        }
    }

    if (
        configuration.browsers.includes('ChromeTravisCi') ||
        configuration.browsers.includes('ChromeSelenium')
    ) {
        const kjhtml = configuration.reporters.indexOf('kjhtml');
        if (kjhtml > -1) {
            configuration.reporters.splice(kjhtml, 1);
        }

        const chrome = configuration.browsers.indexOf('Chrome');
        if (chrome > -1) {
            configuration.browsers.splice(chrome, 1);
        }
    }

    if (process.env.PARALLEL) {
        config.frameworks.unshift('parallel');
        config.plugins.unshift(require('karma-parallel'));
        config.parallelOptions = {
            // executors: 10, // Defaults to cpu-count - 1
            // shardStrategy: 'round-robin'
            // shardStrategy: 'description-length'
            // shardStrategy: 'custom'
            // customShardStrategy: function(config) {
            //   config.executors // number, the executors set above
            //   config.shardIndex // number, the specific index for the shard currently running
            //   config.description // string, the name of the top-level describe string. Useful //     for determining how to shard the current specs
            //   return config.
            // }
        };
    }

    config.set(configuration);
};

// Helpers
function JasmineSeedReporter(baseReporterDecorator) {
    baseReporterDecorator(this);

    this.onBrowserComplete = (browser, result) => {
        const seed = result.order && result.order.random && result.order.seed;
        if (seed) this.write(`${browser}: Randomized with seed ${seed}.\n`);
    };

    this.onRunComplete = () => undefined;
}

angular.json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "defaultProject": "sandbox",
  "cli": {
    "analytics": false,
    "packageManager": "npm"
  },
  "projects": {
    "sandbox": {
      "projectType": "application",
      "schematics": {
        "@schematics/angular:component": {
          "style": "scss"
        }
      },
      "root": "",
      "sourceRoot": "src",
      "prefix": "cp",
      "i18n": {
        "sourceLocale": "en-GB",
        "locales": {
          "nl-BE": "src/locale/messages.nl-BE.xlf",
          "nl-NL": "src/locale/messages.nl-NL.xlf",
          "fr-BE": "src/locale/messages.fr-BE.xlf",
          "de-DE": "src/locale/messages.de-DE.xlf"
        }
      },
      "architect": {
        "build": {
          "defaultConfiguration": "",
          "builder": "@angular-builders/custom-webpack:browser",
          "options": {
            "outputPath": "build/sandbox",
            "index": "src/index.html",
            "main": "src/app.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.app.json",
            "sourceMap": {
              "scripts": true,
              "styles": true,
              "vendor": false
            },
            "assets": [
              {
                "glob": "favicon-32x32.png",
                "input": "nui/assets/favicons/",
                "output": "/favicons/"
              },
              {
                "glob": "*",
                "input": "assets",
                "output": "/public/images/"
              },
              {
                "glob": "*",
                "input": "config/init/",
                "output": "/config/init/"
              }
            ],
            "styles": ["src/style.scss"],
            "stylePreprocessorOptions": {
              "includePaths": ["nui", "node_modules/@syncfusion"]
            },
            "scripts": [],
            "customWebpackConfig": {
              "path": "./builder/webpack.extras.dev.ts"
            },
            "allowedCommonJsDependencies": [
              "md5",
              "croppie",
              "xlsx",
              "file-saver",
              "node-interval-tree",
              "socket.io-client",
              "moment-timezone",
              "dom-set",
              "dom-plane",
              "dom-autoscroller",
              "zone.js/dist/long-stack-trace-zone",
              "querystring",
              "formiojs"
            ],
            "vendorChunk": true,
            "extractLicenses": false,
            "buildOptimizer": false,
            "optimization": false,
            "namedChunks": true
          },
          "configurations": {
            "production": {
              "customWebpackConfig": {
                "path": "./builder/webpack.extras.prod.ts"
              },
              "assets": [
                {
                  "glob": "robots.txt",
                  "input": "nui/assets/",
                  "output": "/"
                },
                {
                  "glob": "humans.txt",
                  "input": "nui/assets/",
                  "output": "/"
                },
                {
                  "glob": "**/*",
                  "input": "nui/assets/favicons/",
                  "output": "/favicons/"
                },
                {
                  "glob": "*",
                  "input": "assets",
                  "output": "/public/images/"
                },
                {
                  "glob": "*",
                  "input": "config/init/",
                  "output": "/config/init/"
                }
              ],
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "localize": true,
              "statsJson": false,
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": {
                "scripts": true,
                "styles": true,
                "vendor": false,
                "hidden": true
              },
              "namedChunks": false,
              "extractLicenses": true,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "bundle",
                  "name": "main",
                  "maximumWarning": "700kb",
                  "maximumError": "1400kb"
                },
                {
                  "type": "initial",
                  "maximumWarning": "1500kb",
                  "maximumError": "3mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "50kb"
                },
                {
                  "type": "anyScript",
                  "maximumWarning": "1mb",
                  "maximumError": "5mb"
                }
              ]
            },
            "be": {
              "localize": ["nl-BE"]
            },
            "nl": {
              "localize": ["nl-NL"]
            },
            "fr": {
              "localize": ["fr-BE"]
            },
            "de": {
              "localize": ["de-DE"]
            },
            "prod-stats": {
              "browserTarget": "sandbox:build:production",
              "statsJson": true,
              "outputHashing": "none"
            }
          }
        },
        "serve": {
          "builder": "@angular-builders/custom-webpack:dev-server",
          "options": {
            "browserTarget": "sandbox:build",
            "port": 8080
          },
          "configurations": {
            "production": {
              "browserTarget": "sandbox:build:production"
            },
            "be": {
              "browserTarget": "sandbox:build:be"
            },
            "nl": {
              "browserTarget": "sandbox:build:nl"
            },
            "fr": {
              "browserTarget": "sandbox:build:fr"
            },
            "de": {
              "browserTarget": "sandbox:build:de"
            },
            "jit": {
              "aot": false,
              "sourceMap": {
                "scripts": true,
                "styles": false,
                "vendor": false
              }
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "sandbox:build",
            "format": "xlf2",
            "outputPath": "src/locale",
            "outFile": "messages.xlf"
          }
        },
        "test": {
          "builder": "@angular-builders/custom-webpack:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.spec.json",
            "karmaConfig": "karma.conf.js",
            "codeCoverage": true,
            "styles": [],
            "scripts": [],
            "customWebpackConfig": {
              "path": "./builder/webpack.extras.ts"
            }
          }
        },
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "sandbox:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "sandbox:serve:production"
            },
            "noserve": {
              "devServerTarget": ""
            },
            "sandbox": {
              "devServerTarget": "",
              "baseUrl": "https://app.mvp-dev.aws.crossuite.com"
            }
          }
        },
        "lint": {
          "builder": "@angular-eslint/builder:lint",
          "options": {
            "lintFilePatterns": ["src/**/*.ts", "src/**/*.html"],
            "exclude": ["**/node_modules/**"]
          }
        }
      }
    }
  }
}

tsconfig.spec.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/spec"
  },
  "files": ["src/test.ts", "src/polyfills.ts"],
  "include": [
    "src/**/*.spec.ts",
    "src/**/*.d.ts",
    "@types/*.d.ts",
    "nui/@types/*.d.ts",
    "core/@types/*.d.ts"
  ]
}

tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "target": "ES2015",
    "module": "es2020",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "noUnusedParameters": false,
    "noUnusedLocals": true,
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true,
    "removeComments": false,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "noEmitHelpers": true,
    "importHelpers": true,
    "strictNullChecks": false,
    "skipLibCheck": true,
    "strict": true,
    "strictPropertyInitialization": false,
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "pretty": true,
    "resolveJsonModule": true,
    "declaration": false,
    "lib": ["dom", "es2019"],
    "baseUrl": ".",
    "outDir": "./out-tsc/base",
    "paths": {
      "nui/*": ["nui/src/lib/*"],
      "nui/shared/*": ["nui/src/shared/*"],
      "src/globals": ["src/globals.ts"],
      "src/env": ["src/env.ts"],
      "core/*": ["core/src/*"],
      "store/*": ["src/store/*"],
      "app/*": ["src/app/*"],
      "lib/*": ["src/lib/*"],
      "lazy/*": ["src/lazy/*"],
      "modernizr": ["nui/vendor/modernizr.js"],
      "test/*": ["src/test/*"],
      "src/i18n": ["src/i18n/index.ts"]
    },
    "typeRoots": ["node_modules/@types", "@types", "nui/@types", "core/@types"]
  },
  "exclude": [
    "aio-builds-setup",
    "content",
    "dist",
    "build",
    "node_modules",
    "out-tsc",
    "scripts",
    "tools",
    "nui/node_modules"
  ],
  "angularCompilerOptions": {
    "strictInputAccessModifiers": true,
    "fullTemplateTypeCheck": true,
    "strictInjectionParameters": true,
    "strictTemplates": true,
    "strictInputTypes": true,
    "strictOutputEventTypes": true
  }
}

Activity

  1. just-jeb commented on Oct 28, 2021

    @just-jeb
    Owner

    Hey @KrakenTyio, thanks for opening this issue!
    If you switch back to the default Angular builder everything works fine?

  2. KrakenTyio commented on Oct 28, 2021

    @KrakenTyio
    Author

    Hi, when i switch to default its work almost correct, ofc almost bc i use in custom handler for svg loader, but yes when i turn off (comment) features in project which is needed this custom loaders, everethinks work correct

    i found in other threats like that
    tschaub/karma-source-map-support#30 (comment)

    there is issue with this source-map-support and new ts-node version
    after reading this for now i prepare my own quick prebuild file like npx tsc ./builder/webpack.extras.dev.ts which create ./builder/webpack.extras.dev.js and load to custom-webpack:karma this file and everethink work well

    so issue is only when is setting wrote in ts

    also will be nice set different tsconfig options for config ts file and different for builded project which will be tested

  3. DmitryEfimenko commented on Nov 1, 2021

    @DmitryEfimenko

    I locked the version of ts-node to 10.2.1 and that helped

  4. elliottregan commented on Dec 1, 2021

    @elliottregan

    @DmitryEfimenko How did you lock ts-node to 10.2.1?

  5. DmitryEfimenko commented on Dec 1, 2021

    @DmitryEfimenko

    @elliottregan in the package.json in the devDependencies in the version for the ts-node, make sure there is no ~ or ^:

    "devDependencies": {
      "ts-node": "10.2.1"
    }
  6. yasinkocak commented on Dec 23, 2021

    @yasinkocak

    Is there any updates for this issue?

  7. elliottregan commented on Feb 18, 2022

    @elliottregan

    I just tried with ts-node@10.5.0, and the issue still exists. We're stuck on ts-node@10.2.1 still...

  8. elliottregan commented on Feb 18, 2022

    @elliottregan

    I started a discussion on the release notes for the version of ts-node that broke this. Hoping to get more traction with the issue.

    TypeStrong/ts-node#1507

  9. cspotcode commented on Mar 18, 2022

    @cspotcode

    I've responded with a tiny, tested, working fix in TypeStrong/ts-node#1507 but no one has followed up. So the traction issue appears to be external to ts-node.

  10. SealmDegefu commented on Apr 4, 2022

    @SealmDegefu

    downgrading ts-node to V9 worked for me

  11. paulosteffenm commented on May 20, 2022

    @paulosteffenm

    Replacing this => "ts-node": "^10.7.0",
    For this => "ts-node": "10.2.1"

    Worked for me.

  12. just-jeb commented on Apr 23, 2026

    @just-jeb
    Owner

    Closing this — the underlying issue is with ts-node version compatibility, and the workaround (pinning ts-node to a compatible version) is well-documented in the comments. If this is still happening with a current ts-node version, please open a new issue.

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