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→Contribute to add-on developer tools: added webextensions=-polyfill
* The [https://github.com/mozilla/addons-linter add-ons linter] checks for errors and validates extensions submitted to addons.mozilla.org. Check out the [https://github.com/mozilla/addons-linter/blob/master/CONTRIBUTING.md contributing guide] to get started.
* [https://github.com/mozilla/webextension-polyfill Webextensions-polyfill] is a library designed to help developers create extensions that are compatible across multiple browsers. See the [https://github.com/mozilla/webextension-polyfill/blob/master/CONTRIBUTING.md contributing guide] for how to get started.
== Help add-on users ==
