TC39 Process ↔ 4-stage review process (SPDCF) to independently design & test new ECMAScript features
TC39 holds bimonthly meetings & publishes online notes
Source: github.com/tc39/notes/tree/main/meetings
SPDCF
Strawman Proposal Draft Candidate Finished
Stage 0
"strawman" stage, to sketch ideas
Stage 1
proposal stage, to select champions from Strawman Stage
Stage 2
draft stage, feat more likely become standard
Stage 3
candidate stage, to field test for feedback
Stage 4
finished stage, feat to ship in next ECMAScript ver