充满语法错误的 Atom 源

Question

Recently wanted to look in to atom editor, but, when looking at the source, i see that there are plenty of errors in .js files like syntax errors.

Could someone shine some light on me, why popular project has so many syntax errors (or am i missing something?)?

By syntax errors, this is what i mean (missing semicolons & even code, that is not javascript valid code.):

Answer 1

Semicolons are not strictly required for most JavaScript to run.

The code you posted contains ES2015 syntax, which is perfectly valid JavaScript.

Answer 2

What you see there is indeed valid syntax.

Semicolons can (mostly) be omitted in JavaScript and are optional. It is a question of convention whether you use them or not.

The syntax you can see in the screenshot is valid ES2015 syntax .