New JavaScript features in ES2019:
Array#{flat,flatMap}
Object.fromEntries
String#{trimStart,trimEnd}
Symbol#description
try { } catch {} // optional binding
JSON ⊂ ECMAScript
well-formed JSON.stringify
stable Array#sort
revised Function#toString
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For example, optional catch binding shipped in V8 v6.6/Chrome 66, in early 2018. It’ll be part of ES2019 which only gets officially published in mid-2019.
Don’t worry about version numbers
Don’t wait for versioned spec snapshots to be published to start using new featuresShow this threadThanks. Twitter will use this to make your timeline better. UndoUndo
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what about whatwg and w3c proposals, at what stage do they ship?
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It’s a separate process. There’s no staging process for WHATWG proposals.
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