TypeError: Cannot read property 'close' of undefined

Bug Report

Attempting to run Jest (via yarn run test:ci) in container as part of Jenkins pipeline. Works flawlessly on local machine, but fails randomly on Jenkins. About half of identical builds are coming back with the following error.

$ jest --coverage --ci
(node:45) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'close' of undefined
    at Object.<anonymous> (/var/lib/jenkins/workspace/portal-ui-gerrit-build-develop/node_modules/chalk/index.js:72:75)
    at Module._compile (module.js:660:30)
    at Object.Module._extensions..js (module.js:671:10)
    at Module.load (module.js:573:32)
    at tryModuleLoad (module.js:513:12)
    at Function.Module._load (module.js:505:3)
    at Module.require (module.js:604:17)
    at require (internal/module.js:11:18)
    at _load_chalk (/var/lib/jenkins/workspace/portal-ui-gerrit-build-develop/node_modules/jest-cli/build/cli/index.js:67:42)
    at Object.<anonymous> (/var/lib/jenkins/workspace/portal-ui-gerrit-build-develop/node_modules/jest-cli/build/cli/index.js:23:32)
(node:45) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:45) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Jest configuration

"jest": {
    "preset": "jest-preset-angular",
    "roots": [
      "<rootDir>/src/"
    ],
    "setupTestFrameworkScriptFile": "<rootDir>/src/setup-jest.ts",
    "testResultsProcessor": "jest-junit"
  },
  "jest-junit": {
    "suiteName": "Jest Unit Tests",
    "output": "./reports/jest.xml",
    "classNameTemplate": "{classname}-{title}",
    "titleTemplate": "{classname}-{title}",
    "ancestorSeparator": " › ",
    "usePathForSuiteName": "true"
  },

[th317erd]

I had this issue because another module was installing ansi-styles that was an older version at the root of the projects node_modules. To fix ran the following command and everything started working again for me: npm i --save-dev chalk@2.4.2 ansi-styles@3.2.1

[mjesun]

It’s not an issue with chalk, it’s because you have left dangling async code on a sync test (or you haven’t waited for all stuff on an async test). Line 72 of chalk/index.js contains a reference to a require result. Jest picks it and inlines the require call, for performance reasons, resulting in:

require('ansi-styles').color.closeRe = new RegExp(escapeStringRegexp(ansiStyles.color.close), 'g');

However, your test has already finished, meaning the environment has been disposed, and any further call to require will result in a failure. Possible mitigations for this are in my comment above; the fact that does not fail locally is probably a race condition.