Puppeteer v25.14.0 ships network emulation migration and Firefox 158.0 support
Puppeteer released version 25.14.0 of puppeteer-core, migrating network emulation to a new rule-based API and rolling to Firefox 158.0.
Briefing
- Puppeteer: Puppeteer released version 25.14.0 of puppeteer-core, migrating network emulation to a new rule-based API and rolling to Firefox 158.0.
Why it matters
The migration to Network.emulateNetworkConditionsByRule signals a shift toward more structured, rule-driven network simulation, which could simplify testing of throttled or flaky connections. Accepting Headers instances for request interception also tightens integration with standard HTTP libraries. The Firefox bump keeps parity with the latest browser release, but the changes are incremental rather than groundbreaking.
Sources
- Primary source · Puppeteer · 2026-10-14 — puppeteer/puppeteer puppeteer-core: v25.14.0
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