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Cake day: June 18th, 2023
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angel@iusearchlinux.fyito Programmer Humor@lemmy.ml•Lemmy devs approaching the reddit API deadline likeEnglish1·2 years agoThe dev of the Thunder app is insane. New releases three times a week, with a lot of new features each time.
Automatic Semicolon Insertion (ASI) has (sadly) been a part of JavaScript longer than 2016. I’m not sure exactly when it was introduced, but this document from 2009 already contains it: https://web.archive.org/web/20120418215856/https://ecma262-5.com/ELS5_Section_7.htm#Section_7.9
IMO it’s bad practice to rely on ASI since the semicolons may not get inserted where you expected them to. The following snippet
const x = 0 const y = x [1, 2, 3].forEach(console.log)
is interpreted as
const x = 0; const y = x[1, 2, 3].forEach(console.log);
which raises a
TypeError
.There are more examples of ASI not doing the right thing on the web, so I don’t agree with “Javascript doesn’t need semicolon”.