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Guide
Tutorials
Configure
API
Community

transformer

  • Type: 'babel-jest' | 'ts-jest'
  • Default: babel-jest

First need to run new command to enable [Unit Test / Integration Test] features.

Configure the compilation tool used during test execution. By default, babel-jest is used. You can configure it to use either babel-jest or ts-jest.

Additional

babel-jest can compile TypeScript files but does not perform type checking. If you want to perform type checking on your TypeScript files while running test cases, you can use ts-jest.