Brief intro to TC39 and how it works
summary
Defines what TC39 actually does: governance by consensus, work happening on GitHub, and a four‑plus staged proposal pipeline with concrete examples and outcomes. Proposals live at stage 0,1,2,2.7,3,4; deferred evaluation moved into stage 2.7 to force tests; browsers implement at stage 3 and stage 4 features like ArrayBuffer transfer become part of EcmaScript. Task groups handle internationalization, security, source maps; Test262 is the conformance test harness used to prove features work.
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chapters (11)
- 0:00TC39 introduction and purpose
- 2:31What is TC39
- 5:40How TC39 works
- 7:26TC39 task groups
- 8:54Where TC39 work happens
- 10:00Proposal stages from zero to four
- 13:12Stage 2 specification
- 15:01Stage 2.7 testing
- 16:26Stage 3 implementation
- 17:48Stage 4 standardization
- 19:16How to join TC39
