How to ignore test files in webpack with ts-loader

Question

I have a project that runs the test files named \"*.test.ts\" with jest and ts-jest. This is fine but when I launch webpack, I get errors for the test files:

ERR         


        

Answer 1

Found it. My version of 'ts-loader' was behind and somehow did not manage to properly handle installed @types.

Rule of thumb: pack, build, transpile issues: upgrade dev dependencies.