Disallow debugger (no-debugger)

The debugger statement is used to tell the executing JavaScript environment to stop execution and start up a debugger at the current point in the code. This has fallen out of favor as a good practice with the advent of modern debugging and development tools. Production code should definitely not contain debugger, as it will cause the browser to stop executing code and open an appropriate debugger.


Rule Details

This rule is aimed at eliminating debugger references from your JavaScript. As such, it warns whenever it sees debugger used as an identifier in code.

When Not To Use It

If your code is still very much in development and don’t want to worry about stripping about debugger statements, then turn this rule off. You’ll generally want to turn it back on when testing code prior to deployment.

Further Reading


This rule was introduced in ESLint 0.0.2.