Question 1

What is a Jest configuration file?

Accepted Answer

A Jest configuration file (commonly `jest.config.js` or `jest.config.json`, or within `package.json`) tells Jest how to run your tests, what to test, and how to report results. It can configure test environments, transformers, module paths, coverage reporters, and more.

Question 2

How do I use this viewer?

Accepted Answer

Click the "Open Local File" button to select your Jest configuration file. Its content will be displayed with syntax highlighting (JavaScript or JSON). If it's JSON, our JSON Viewer (link to /viewer/json) is also suitable.

Question 3

Does this tool run tests or validate the config?

Accepted Answer

No, this viewer only displays the text content of the configuration file. It does not execute Jest or validate the configuration options.

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