core(load-fast-4-pwa): use computed artifacts #4981
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paulirish
approved these changes
Apr 18, 2018
| const MAXIMUM_TTFI = 10 * 1000; | ||
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| const WHITELISTED_STATUS_CODES = [307]; | ||
| const MAXIMUM_TTI = 10 * 1000; |
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Just to call out explicitly:
We're changing the PWA speed threshold from TTFI <= 10s to be a slightly more aggressive TTI < 10s.
| const metricComputationData = {trace, devtoolsLog, settings}; | ||
| const tti = await artifacts.requestConsistentlyInteractive(metricComputationData); | ||
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| const score = Number(tti.timing <= MAXIMUM_TTI); |
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https://developers.google.com/web/progressive-web-apps/checklist does say
interactive <10s for first visit on a simulated 3G network.
let's change this to < just to simplify. nice to stay single digits. :)
| const trace = artifacts.traces[Audit.DEFAULT_PASS]; | ||
| const devtoolsLog = artifacts.devtoolsLogs[Audit.DEFAULT_PASS]; | ||
| const settingOverrides = {throttlingMethod: 'simulate', throttling: mobile3GThrottling}; | ||
| const settings = |
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can you drop a comment for this line?
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yeah good call done
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means we'll never pass with the caveat :D we can always answer the question!