Add interoperable TTFB to measure Early Hints consistently #566
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yoavweiss
reviewed
Nov 7, 2024
tunetheweb
changed the title
documentDuration to measure Early Hints better
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Fixes #565
This will revert Chrome back to reporting TTFB as the Early Hints first bytes (same as other browsers and tools).
documentDurationis provided for browsers that support the "document bytes" to understand the delay between the "early hint first bytes" (aka TTFB) and "document first bytes".