DevTools Error: INVALID_URL when trying to audit extension

[eridiniara]

Initial URL: chrome-extension://laookkfknpbbblfpciffpaejjkokdgca/dashboard.html
Chrome Version: 72.0.3590.0
Error Message: INVALID_URL
Stack Trace:

LHError: INVALID_URL
    at lighthouse (chrome-devtools://devtools/remote/serve_file/@ec242826af28a2b3c3b47390ab6141cfe26fe9e7/audits2_worker/audits2_worker_module.js:1130:461)
    at runLighthouseInWorker (chrome-devtools://devtools/remote/serve_file/@ec242826af28a2b3c3b47390ab6141cfe26fe9e7/audits2_worker/audits2_worker_module.js:1570:200)
    at Promise.resolve.then._ (chrome-devtools://devtools/remote/serve_file/@ec242826af28a2b3c3b47390ab6141cfe26fe9e7/audits2_worker/audits2_worker_module.js:4593:133)

[brendankenny]

This is an interesting case for the url check (in contrast to e.g. #6423). There's no reason that DevTools shouldn't be able to audit an extension's page.

[patrickhulce]

Oh yeah that check regressed chrome-extension support for DevTools then :/

[justinribeiro]

That's my bad. I can add chrome-extension: to allowedProtocols and that should resolve it:
https://github.com/GoogleChrome/lighthouse/blob/master/lighthouse-core/lib/url-shim.js#L27

[patrickhulce]

Yep that should do the trick sounds great! No worries at all @justinribeiro, tbh I completely forgot that DevTools could still audit chrome extensions too until the new errors started popping up 😆