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TypeError: Cannot read property 'prototype' of undefined when run in jest

See original GitHub issue

yarn jest --testPathPattern path/to/file
yarn run v1.22.4
$ D:\workspace\js\myproject\node_modules\.bin\jest --testPathPattern path/to/file
 FAIL  path/to/xxx.spec.ts
  ● Test suite failed to run

      ● Test suite failed to run

        TypeError: Cannot read property 'prototype' of undefined

      at Object.<anonymous>.createComplexClass.isClass (node_modules/mathjs/lib/type/complex/Complex.js:28:23)
      at assertAndCreate (node_modules/mathjs/lib/utils/factory.js:49:12)
      at Object.<anonymous> (node_modules/mathjs/lib/entry/pureFunctionsAny.generated.js:24:38)
      at Object.<anonymous> (node_modules/mathjs/lib/entry/mainAny.js:53:25)

It can be produced with the latest at least three versions. It works fine in my project when run the project by running npm run start. Why this is not working with jest.

Issue Analytics

State:
Created 3 years ago
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

josdejongcommented, Sep 16, 2020

Thanks a lot for working out this example David!

We’re working on improved support for ES modules and Commonjs in the library (see #1941, #1962), it will be interesting to see if we can solve this issue with Jest (or maybe it’s even already fixed in this PR).

0reactions

josdejongcommented, Nov 10, 2020

Thanks for checking 👍

We’ll keep this issue open and have to do more digging then. Anyone able to help?