Earlier quoted context omitted.
Not 100%. There are a small handful of really wicked gotchas. I think there’s a lot of articles on them. I can’t find the one I like and don’t want to share one I haven’t read yet.
Here’s an example in each direction. In this first example, ASI inserts an undesired semicolon: return {a: 0} This returns undefined, and doesn’t continue on to execute the block containing a statement 0 with label a. (Change it to {a: 0, b: 0} and you get a syntax error because of this reinterpretation of what was intended as an object literal.) In this second example, ASI doesn’t insert a desired semicolon: f() [].…
f()
['foo', 'bar'].forEach(...)
function f() {
return {
bar: ['Not the array', 'you were expecting'],
}
}
Another fairly likely example of a desired semicolon not inserted is when the following line starts with a template string literal:
f()
`This is tagged with whatever f() returns`
`some ${interpolated} string`.includes(someVar)
? sideEffectA()
: sideEffectB()