Package Exports

ts-jest/preprocessor
ts-jest/preprocessor.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (ts-jest) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

ts-jest

Note: This is currently just a hack and might not be suitable for all setups.

Details

Note: This repo uses code from the source-map-support package to show errors with mapped locations.

To use this in your project, run:

npm install --save-dev ts-jest

Modify your project's package.json so that the jest section looks something like:

{
  "jest": {
    "scriptPreprocessor": "<rootDir>/node_modules/ts-jest/preprocessor.js",
    "testRegex": "(/__tests__/.*|\\.(test|spec))\\.(js)$",
    "moduleFileExtensions": [
      "ts",
      "tsx",
      "js"
    ],
    "globals": {
      "__TS_CONFIG__": {
        "module": "commonjs",
        "jsx": "react"
      }
    }
  }
}

Note: It's currently necessary to have globals > __TS_CONFIG__ present in your package.json even if it is only an empty object.

This setup should allow you to write Jest tests in Typescript and be able to locate errors without any additional gymnastics.

If you have any suggestions/pull requests to turn this into a useful package, just open an issue and I'll be happy to work with you to improve this.

Quickstart to run tests (only if you're working on this package)

git clone https://github.com/kulshekhar/ts-jest
cd ts-jest
npm install
./test-init.sh
npm test

It is assumed that jest-cli is globally installed. If not, please do so:

npm i -g jest-cli