Web Inspector: Replace Object.shallowMerge with ES2018 spread operator

[Nikita Vasilyev]

Object.shallowMerge defined in Utilities.js is no longer needed with ES2018 spread operator.

    Object.shallowMerge(a, b)

can be replaced with:

    {...a, ...b}

[Devin Rousso]

Created attachment 332488 [details]
Patch

My only hesitation to this is that we might get collisions between keys (such as if we chain an options variable between functions), but I think that will be very rare

[BJ Burg]

Comment on attachment 332488 [details]
Patch

r=me

[Joseph Pecoraro]

Comment on attachment 332488 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=332488&action=review

> Source/WebInspectorUI/UserInterface/Base/DOMUtilities.js:68
> -    return WI.linkifyNodeReferenceElement(node, link, Object.shallowMerge(options, {displayName}));
> +    return WI.linkifyNodeReferenceElement(node, link, {...options, displayName});

I find this a little harder to read / understand, but I suppose its fine.

[WebKit Commit Bot]

Comment on attachment 332488 [details]
Patch

Clearing flags on attachment: 332488

Committed r227864: <https://trac.webkit.org/changeset/227864>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Radar WebKit Bug Importer]

<rdar://problem/37048353>