# tc39/proposals

Tracking ECMAScript Proposals

Repository: https://github.com/tc39/proposals
Canonical: https://ross.abutalabs.com/products/proposals
Homepage: https://tc39.github.io/process-document/
License Family: other
Topics: proposal, ecmascript, javascript, spec, specification, committee, language-design, language
Last push: 2026-08-04T15:21:11+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 96, release rhythm 35, longevity 100
- inputs: {"age_days": 3766, "days_push": 29, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 19177, forks 750 (observed 2026-08-28T04:11:27.501317+00:00)

## What it is
The official TC39 repository tracking ECMAScript (JavaScript) language proposals across all maturity stages, from stage 0 ideas to finished standard features. It serves as the canonical index of the committee's work on evolving the JavaScript specification.

## Use cases
- track upcoming JavaScript language features
- find out which ECMAScript proposals are at stage 3
- check the status of a specific JS proposal
- learn how the TC39 proposal process works
- see which proposals have been finished or withdrawn
- research future JavaScript syntax before adopting transpiler features

## When to choose
- you need the authoritative, up-to-date list of ECMAScript proposals and their stages
- you want to follow or contribute to JavaScript language design
- you're evaluating whether to polyfill or transpile an upcoming JS feature

## When to avoid
- you need a software library or tool rather than documentation
- you want finalized JavaScript documentation instead of in-progress proposals

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, programming-language
- domain: programming-languages, web-development, developer-tools
- platform: cross-platform
- tags: ecmascript, tc39, language-design, specification, tracking-list, javascript, web-server

## Member repositories
- tc39/proposals (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:27.501317+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:00:24.695077+00:00, confidence not recorded.
  - readme: https://github.com/tc39/proposals (fetched 2026-08-28T04:11:27.501317+00:00, sha 96fe18bcad53)
  - homepage: https://tc39.github.io/process-document/ (fetched 2026-08-29T07:58:59.850341+00:00, sha c830fdac4695)
- Data as of 2026-08-30T08:39:29.467469+00:00.