Add generic support to Element.closest()

[fregante]

This now matches querySelector. Allows:

element.closest<HTMLAnchorElement>('.lol')
// => HTMLAnchorElement

[fregante]

I have no idea of what the error means 😮

[HolgerJeromin]

You have to run the script and include the generated files, too. You submitted only the input files.
Not sure about the error we see.

[fregante]

Edit: resolved

Master fails too, npm run fetch/build shows the same message

./TSJS-lib-generator master
❯ nr fetch

> tsjs-lib-generator@ fetch ./TSJS-lib-generator
> echo This could take a few minutes... && npm run fetch-idl && npm run fetch-mdn

This could take a few minutes...

> tsjs-lib-generator@ fetch-idl ./TSJS-lib-generator
> tsc --p ./tsconfig.json && node ./lib/idlfetcher.js

src/widlprocess.ts:199:5 - error TS2326: Types of property 'name' are incompatible.
  Type 'string | null' is not assignable to type 'string | undefined'.
    Type 'null' is not assignable to type 'string | undefined'.

199     return {
        ~~~~~~~~
200         name: operation.name,
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
... 
208         exposed: getExtAttrConcatenated(operation.extAttrs, "Exposed") || inheritedExposure
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
209     };
    ~~~~~~


Found 1 error.

Same error currently in #696

[saschanaz]

No need to npm run fetch here, try running npm run build && npm run baseline-accept after you apply #696 (comment).

[msftclas]

All CLA requirements met.

[fregante]

All good now