Intl.NumberFormat.prototype.format must preserve sign of -0
Created attachment 395205 [details] Patch
Comment on attachment 395205 [details] Patch r=me
Created attachment 395217 [details] Patch for landing
Committed r259370: <https://trac.webkit.org/changeset/259370> All reviewed patches have been landed. Closing bug and clearing flags on attachment 395217 [details].
<rdar://problem/61180378>