Sometimes, we want to ignore a file pattern for Jest code coverage.

In this article, we’ll look at how to ignore a file pattern for Jest code coverage.

How to ignore a file pattern for Jest code coverage?

To ignore a file pattern for Jest code coverage, we can add the option in the Jest config.

For instance, we add

collectCoverage: true,
collectCoverageFrom: ['src/**/*.ts','!src/*/filesToExclude.ts']

to calculate the code coverage from the paths that match patterns listed in collectCoverageFrom that don’t have the exclamation mark before it.

As a result, we see code coverage calculated from the src/**/*.ts and exclude src/*/filesToExclude.ts from code coverage calculations.

Conclusion

To ignore a file pattern for Jest code coverage, we can add the option in the Jest config.