core(stacks): timeout stack detection #11172
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paulirish
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Aug 3, 2020
radum
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Aug 13, 2020
* upstream/master: (42 commits) docs: add Code of Conduct to project (GoogleChrome#11212) docs(readme): add related project: lighthouse-viewer (GoogleChrome#11250) core(font-size): remove deprecated DOM.getFlattenedDocument (GoogleChrome#11248) misc: fix typo in method name (GoogleChrome#11239) i18n: make double dollar validation less strict (GoogleChrome#10299) misc: rephrase comments to be more inclusive (GoogleChrome#11228) misc: tweak gcp scripts to work in google corp (GoogleChrome#11233) v6.2.0 (GoogleChrome#11232) report: correctly display CLS in budget table (GoogleChrome#11209) report: vertically center thumbnails (GoogleChrome#11220) i18n: import (GoogleChrome#11225) tests: istanbul ignore inpage function (GoogleChrome#11229) deps(snyk): update script to prune <0.0.0 and update snapshot (GoogleChrome#11223) core(stacks): timeout stack detection (GoogleChrome#11172) core(config): unsized-images to default (GoogleChrome#11217) core(image-elements): collect CSS sizing, ShadowRoot, & position (GoogleChrome#11188) core: add FormElements gatherer (GoogleChrome#11062) new_audit: report animations not run on compositor (GoogleChrome#11105) tests: update chromestatus expecatations (GoogleChrome#11221) deps: update dot-prop secondary dependency (GoogleChrome#11198) ...
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Summary
The stacks gatherer has a few async detections that can never resolve when the page overrides fetch or does other weird things. When this happens the entire run becomes fatal 😢
This adds a strict 1s timeout to each async detection to avoid PROTOCOL_TIMEOUT.
Real-world site that had this problem: https://www.tiffany.com/
Related Issues/PRs
fixes #11124
upstream fix johnmichel/Library-Detector-for-Chrome#175