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## Test262 is the official ECMAScript (ECMA-262) conformance suite.
Test262 tests conformance to the continually maintained draft future ECMAScript standard found at http://tc39.github.io/ecma262/ , together with any Stage 3 or later TC39 proposals. It is maintained by Tom Care (@tcare) and Leo Balter (@leobalter) with significant contributions from many in the ECMAScript community.
This project is also described by the [Ecma Technical Report 104](http://ecma-international.org/publications/techreports/E-TR-104.htm).
1. Sign the [Test262 CLA](http://tc39.github.io/test262-cla).
2. Send a pull request. Please make sure you have one commit per pull request. If you have multiple commits, squash them before sending the pull request.
### Running Test262
> See [INTERPRETING.md](./INTERPRETING.md)
There are a number of volunteer-maintained projects that may be used to execute Test262 in various ECMAScript hosts:
- https://github.com/bterlson/test262-harness (platform: Node.js)
- https://github.com/test262-utils/test262-harness-py (platform: Python)
- https://bakkot.github.io/test262-web-runner/ (platform: web)