object-rest-spread Rest/Spread Properties for ECMAScript ( https://github.com/tc39/proposal-object-rest-spread ) ¶ See also https://github.com/tc39/proposal-object-rest-spread https://github.com/tc39/proposal-object-rest-spread/blob/master/Issues.md https://github.com/tc39/notes/blob/master/meetings/2018-01/jan-23.md#restspread-properties-for-stage-4