Specs defining browser #APIs use a formal definition language (#WebIDL) which helps with writing and implementing these APIs. @tidoust, @dontcallmeDOM and @foolip are making it easier to re-use these definitions through a newly released NPM package: npmjs.com/package/@webref/id… 🎉🎇

npm: @webref/idl

Web IDL definitions of the web platform. Latest version: 3.41.3, last published: 5 days ago. Start using @webref/idl in your project by running `npm i @webref/idl`. There are no other projects in the...

npmjs.com
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That NPM package collects #WebIDL definitions from across all specifications identified as "#browser specifications" in a #github maintained registry: github.com/w3c/browser-specs

GitHub - w3c/browser-specs: A machine-readable list of specifications used to build Web browsers

A machine-readable list of specifications used to build Web browsers - GitHub - w3c/browser-specs: A machine-readable list of specifications used to build Web browsers

github.com
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All of that data has been collected and made available in another #github repo github.com/w3c/webref/

GitHub - w3c/webref: Machine-readable references of terms defined in web browser specifications

Machine-readable references of terms defined in web browser specifications - GitHub - w3c/webref: Machine-readable references of terms defined in web browser specifications

github.com
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NPM packages the IDL pieces, with more packages (e.g. for #CSS definitions) in the pipe
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To learn more about these projects and how that data gets reused (e.g. to document browser compat data in @MozDevNet), watch the presentation given during #w3cTPAC last October: youtube.com/r9AXrFoFEg4 (slides at w3.org/2020/Talks/TPAC/uncon…)
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