Code duplication

[shvabuk]

TypeScript Version: 2.7.0

Code duplication in file https://github.com/Microsoft/TypeScript/blob/master/lib/lib.webworker.d.ts
Code

declare function dispatchEvent(evt: Event): boolean;

Actual:
https://github.com/Microsoft/TypeScript/blob/master/lib/lib.webworker.d.ts#L1882
https://github.com/Microsoft/TypeScript/blob/master/lib/lib.webworker.d.ts#L1900

[Xavier-J-Ortiz]

Hey @shvabuk ! I'd like to pick this up. If that's ok.

It looks pretty straight forward, but it would be my first PR to this project, or any open source project. Also will allow me to start to get familiar with the code base and grow from there.

[shvabuk]

@Xavier-J-Ortiz , ok. And I will write some tests.
Don`t forget to read #20481.

[Xavier-J-Ortiz]

@shvabuk - Thank you for pointing that other issue out.

I gave it a try and took a look, but I'm going to let this one go. I checked the generator library, I think that there's some F# stuff there that is over my head.

I'll let someone else work on this. Sorry about that. :(

[shvabuk]

According to searchDuplicates script results https://gist.github.com/shvabuk/ad6b9974794dc7595c5832722df443fa more duplicates was found

Duplication in file: lib/lib.dom.d.ts on lines: 776 & 14373 (ProgressEventInit)
Duplication in file: lib/lib.dom.d.ts on lines: 3735 & 14684 (EXT_frag_depth)
Duplication in file: lib/lib.d.ts on lines: 4874 & 18471 (ProgressEventInit)
Duplication in file: lib/lib.d.ts on lines: 7833 & 18782 (EXT_frag_depth)
Duplication in file: lib/lib.es2016.full.d.ts on lines: 779 & 14376 (ProgressEventInit)
Duplication in file: lib/lib.es2016.full.d.ts on lines: 3738 & 14687 (EXT_frag_depth)
Duplication in file: lib/lib.es2017.full.d.ts on lines: 784 & 14381 (ProgressEventInit)
Duplication in file: lib/lib.es2017.full.d.ts on lines: 3743 & 14692 (EXT_frag_depth)
Duplication in file: lib/lib.es2018.full.d.ts on lines: 778 & 14375 (ProgressEventInit)
Duplication in file: lib/lib.es2018.full.d.ts on lines: 3737 & 14686 (EXT_frag_depth)
Duplication in file: lib/lib.webworker.d.ts on lines: 1882 & 1900 (dispatchEvent)
Duplication in file: lib/lib.esnext.full.d.ts on lines: 780 & 14377 (ProgressEventInit)
Duplication in file: lib/lib.esnext.full.d.ts on lines: 3739 & 14688 (EXT_frag_depth)
Duplication in file: lib/lib.es6.d.ts on lines: 6585 & 20182 (ProgressEventInit)
Duplication in file: lib/lib.es6.d.ts on lines: 9544 & 20493 (EXT_frag_depth)

@RyanCavanaugh
Looks like this issue may be closed and appropriate issue should be opened in https://github.com/Microsoft/TSJS-lib-generator .
May you give advise? May I add,
rewritten in a cleaner style, searchDuplicates script to tests? If yes, than in wich directory? It looks like generator (not compiler) issue.

[shvabuk]

Appropriate issue in JS-lib-generator repository created
microsoft/TypeScript-DOM-lib-generator#347