tc39/ecma262

This repository contains the source for ECMA-262, the official specification document that defines the ECMAScript language, which is the standard that JavaScript is built on. In other words, this is where the rules of JavaScript are written down in a formal, standards-body format. The source is processed to produce a human-readable version of the spec, available at tc39.es/ecma262. New language features for JavaScript don't appear in the spec directly, they start as proposals. Those proposals follow the TC39 process, a multi-stage review system (Stage 0 through finished) tracked in a separate proposals repository. Anyone can contribute a new proposal by following the process outlined in the contributing guide. The repository also supports local development: cloning it and running npm install followed by npm run build produces the spec in the out directory. Community discussion happens on the ES discourse forum and a Matrix chat channel.