puppeteer/new-docs/puppeteer.coverage.startjscoverage.md

Home > puppeteer > Coverage > startJSCoverage

Coverage.startJSCoverage() method

Signature:

startJSCoverage(options?: JSCoverageOptions): Promise<void>;

Parameters

Parameter	Type	Description
options	JSCoverageOptions	defaults to { resetOnNavigation : true, reportAnonymousScripts : false }

Returns:

Promise<void>

Promise that resolves when coverage is started.

Remarks

Anonymous scripts are ones that don't have an associated url. These are scripts that are dynamically created on the page using eval or new Function. If reportAnonymousScripts is set to true, anonymous scripts will have __puppeteer_evaluation_script__ as their URL.