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by haffla 3199 days ago
What? The mentioned Array methods (map, reduce, filter, etc..) are not new ES6 features
4 comments

Yup, I've been using them since forever ago.

> Standard ECMA-262 5.1 Edition / June 2011

.find() and .findIndex() are new in es6, but the others are all es5.
Nowhere does it say "new" features.
"New cool helper functions appeared..."