> ES6 is still trying to catch up but will probably never reach the beauty and ease of Coffeescript. Both are transpilers, only ES6 with Babel is a total horror to manage (just upgraded a large codebase to Babel 7..).
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> Both are transpilers
You don't have to transpile es6 if you don't want older browser support.
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> Both are transpilers
You don't have to transpile es6 if you don't want older browser support.