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tc39/ecma262

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tc39/ecma262 has 15,703 GitHub stars and 1,429 forks. GitHot measured +1 stars in 24 hours. Last checked 2026-11-07 08:04 UTC. Last push 2026-11-03.

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Status, process, and documents for ECMA-262

15,703 stars1,429 forks +1 in 24h

Measured star growth

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+1
in 7 days
Update delayed
in 15 days
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Net star changes over overlapping periods, not daily totals. Missing measurements are left blank. Stars measure attention, not software quality.

README.md

Original

ECMAScript

This repo

This repository contains the source for the current draft of ECMA-262, the ECMAScript® Language Specification.

This source is processed to obtain a human-readable version, which you can view here.

If you want to explore how the specification was written, you can also view the source with its history in searchfox.

Current Proposals

Proposals follow the TC39 process and are tracked in the proposals repository.

Contributing New Proposals

Please see Contributing to ECMAScript for the most up-to-date information on contributing proposals to this standard.

Developing the Specification

After cloning, do npm install to set up your environment. You can then do npm run build to build the spec or npm run watch to set up a continuous build. The results will appear in the out directory, which you can use npm run clean to delete.

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