error TS2339: Property 'userSelect' does not exist on type 'CSSStyleDeclaration'

[martinlindhe]

TypeScript Version: 2.1.5

Code

const el = document.createElement("div");
el.style.userSelect = "none"; // error here, property dont exist

Expected behavior:
since the user-select css property is now unprefixed, it would be good to be able to set it!

Actual behavior:
tsc compile error: error TS2339: Property 'userSelect' does not exist on type 'CSSStyleDeclaration'.

More
According to caniuse.com, unprefixed user-select is available in IE11, Edge, Chrome and Firefox

[mhegazy]

PRs welcomed. You can find more information about contributing lib.d.ts fixes at https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md#contributing-libdts-fixes.

[micopc]

Hi, I wanted to work on this but I found out that the code for this is located on dom.generated.d.ts which according to the CONTRIBUTING.md needs to be modified on https://github.com/Microsoft/TSJS-lib-generator. Am i correct or is there something I'm missing?

[mhegazy]

you are correct. the changes need to be made to https://github.com/Microsoft/TSJS-lib-generator, we periodically port the changes back to this repo.