tsconfig.json with no compilerOptions causes typescript-compiler to error

I had a tsconfig.json with no compilerOptions, which typescrpit explicitly allows (docs), and results in using the default values for all optoins.

When importing a .vue file in my test, it would throw the following error:

● Test suite failed to run

        TypeError: Cannot read property 'module' of undefined

      at compileTypescript (node_modules/vue-jest/lib/compilers/typescript-compiler.js:19:32)
      at processScript (node_modules/vue-jest/lib/process.js:23:12)
      at Object.module.exports [as process] (node_modules/vue-jest/lib/process.js:42:18)
      at ScriptTransformer.transformSource (node_modules/@jest/transform/build/ScriptTransformer.js:481:35)
      at ScriptTransformer._transformAndBuildScript (node_modules/@jest/transform/build/ScriptTransformer.js:586:40)
      at ScriptTransformer.transform (node_modules/@jest/transform/build/ScriptTransformer.js:624:25)

If you look at the typescript-compiler.js line it references, there is a clear use of tsConfig.compilerOptions.module with no check whatsoever that compilerOptions is defined, which causes the error.

I have since added a compilerOptions field to my config for other reasons and it works fine now, but wanted to let you guys know!

[lmiller1990]

We should update the latest version on npm… unsure why this hasn’t been done, I will need to see if there is any specific reason npm is sitting on 3.x (this repo was larger unmaintained for quite a while, I’m just picking this up).

You want 4.x for Vue 2 and 5.x for Vue 3. 3.x has not received an update in quite some time.

[lmiller1990]

Just do yarn add vue-jest@4 and grab the latest one, beta something.