It's not possible to use .ts setup/teardown file for global setup/teardown

[asemidotsky]

• Issue

It's not possible to use .ts setup/teardown file for global setup/teardown.
Jest has globalSetup and globalTeardown options which you can use for global setup/teardown but with ts-jest you can not use .ts files for setup.

I have Jest configuration in package.json:

"jest": {
  "globals": {
    "ts-jest": {
      "tsConfigFile": "tsconfig.json"
    }
  },
  "moduleFileExtensions": ["ts","js"],
  "transform": {
    "^.+\\.(ts|tsx)$": "./node_modules/ts-jest/preprocessor.js"
  },
  "testMatch": [
    "**/tests/**/*.test.(ts|js)"
  ],
  "testEnvironment": "node"
}

As I understand with this configuration ts-jest perform in memory transpiling of the .ts files. I have outDir option in compilerOptions of my tsconfig.json, but nothing is written in that outDir and because I cann't use transpiled jest-config.js for use in globalSetup option.

• Expected behavior

Set options in config like this:

globalSetup: "./jest-setup.ts",
globalTeardown: "./jest-teardown.ts"

My question about this at StackOverflow

[kulshekhar]

@asemidotsky there was a discussion in #411 on this. I'm not sure how this can be fixed in ts-jest which can only transpile code that Jest passes to it.

I'm closing this but if my understanding is incorrect, it can be reopened and re-looked at

[renatoalencar]

If you're here, take a look at this: #411 (comment)