"The language features that will be included in the next annual update to JavaScript will be decided early in the new year... One much-requested project has been eagerly awaited and appears to be in the home straight."
"Setting the Scene for JavaScript Efficiency...having the same names in different branches of a regexp simplifies writing expressions which need to match something expressed in various ways but will match only once, like the year 2025 or just 25 in a date."
"New methods for working with JavaScript's Set class have been under discussion for years... leaving developers to write their own set methods or use a polyfill like Core.js."
"TC39 co-chair Rob Palmer described this as another classic case where people have been writing their own utility functions to process sets since ES 2015, indicating how this proposal took a long time to advance."
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