lighthouse 12.2.0

v12.2.0

on Node.js NPM

Full Changelog

We expect this release to ship in the DevTools of Chrome 129, and to PageSpeed Insights within 2 weeks.

Core

• import lantern from trace engine (#16092)
• long-tasks: link to latest guidance (#16138)
• stylesheets: disable transient stylesheet detection (#16121)
• third-party-summary: correct blocking time calculation (#16117)
• trace-engine-result: disable invalidations handler (#16142)

Deps

• upgrade trace_engine to 0.0.32 (#16143)
• upgrade puppeteer to 22.15.0 (#16139)
• upgrade third-party-web to 0.24.5 (#16140)
• upgrade puppeteer to 22.13.1 (#16123)
• upgrade typescript to 5.5.3 (#16091)

Tests

• devtools: sync e2e (#16120)
• treemap: ignore cookie deprecation error (#16141)

Misc

• remove alertdesk from README (#16133)
• build: update README.chromium when rolling devtools (#16144)