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Yes, ECMA-262 completely specifies (modulo bugs) sentences that are accepted or rejected, and for those accepted, their meanings.

But that doesn't alter ASI's error-correction nature, which is not an "implementation detail" -- it's in the spec and all too observable.

You're right, it has the character of a warning system, like Dart's unsound "types". But if it had been noisy (consoles in the early days were costly), too many developers would have ignored the warnings, and users would have paid for the overhead.

Your concluding sentence is spot on, I agree people should use semicolons in JS. Relying on a Ruby-like coding style in the large is way too risky.




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