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But the linked formatter doesn't seem to have an option for no semicolons so I wouldn't call it better in that regard.

EDIT: Looks like they may be open to it though. https://github.com/jlongster/prettier/issues/12

Semicolons are not optional in JavaScript: ASI (http://www.ecma-international.org/ecma-262/6.0/#sec-automati...) is an error correction scheme for novice programmers. The spec's parsing rules calls out the statements following where a semicolon should be "offending tokens". There is no leeway here for style or preference.

The thing is, they made the "error correction scheme" work so well that they are no longer required. Give it a go sometime; you might like it.

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