jest:tldr:72586

The command "jest ${filename1} ${filename2}" is a command used in the context of running tests for JavaScript applications using the Jest testing framework.

Here's the breakdown of the command:

• "jest" is the executable command for running tests using Jest.
• "${filename1}" and "${filename2}" are placeholders representing the names of the files you want to test. You would replace these placeholders with the actual names of the JavaScript files you want to test.

For example, if you have two JavaScript files named "app.test.js" and "utils.test.js" that contain tests for your application, you would use the command:

jest app.test.js utils.test.js

This command will run the tests in the specified files using the Jest testing framework and provide feedback on the test results, including information on passed and failed tests, code coverage, and other relevant details.