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jest-runtime breaks node.js 'module' module API

See original GitHub issue

🐛 Bug Report

Node.js’s module module API is not compliant after gets instrumented by JEST

To Reproduce

const jq = require('jsonpath');

describe('JEST test', () => {

  test('hello world', async () => {

    expect(1).toBe(1);
  });
});

This test will fail with TypeError: Module is not a constructor

Expected behavior

Test should pass

Link to repl or repo (highly encouraged)

https://github.com/hugebdu/jest-bug

envinfo

  System:
    OS: macOS 10.15.3
    CPU: (8) x64 Intel(R) Core(TM) i7-8559U CPU @ 2.70GHz
  Binaries:
    Node: 12.13.1 - ~/.nvm/versions/node/v12.13.1/bin/node
    Yarn: 1.21.1 - ~/.nvm/versions/node/v12.13.1/bin/yarn
    npm: 6.12.1 - ~/.nvm/versions/node/v12.13.1/bin/npm
  npmPackages:
    jest: ~25.2.1 => 25.2.1

Issue Analytics

State:
Created 3 years ago
Reactions:2
Comments:11 (1 by maintainers)

Top GitHub Comments

4reactions

SimenBcommented, Mar 26, 2020

25.2.2 released with the fix. If it’s still broken somehow we’ll need to revert #9469 and revisit it later

2reactions

SimenBcommented, Mar 26, 2020

Oops, comes from #9469, /cc @doniyor2109.

I didn’t know require('module'); returned a constructible class - doesn’t seem to be documented behavior. We need to fix this of course

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