Automatic paren changes semantics and broke code

[wyuenho]

We recently upgraded from prettier 0.19 to 0.22. Prettier now starts to strip parens in expressions like this:

// before
var fooInstance = new (classFactory('Foo'))(...);

// after
var fooInstance = new classFactory('Foo')(...);

This stripping is not safe because the invocation operator () has higher precedence than new, so the interpreter will try to invoke the returned class like a function first then attempt to new the result of the function invocation.

[vjeux]

Sorry about this! This is fixed in master #1169. We're going to do a release this week. In the meantime, you can add // prettier-ignore in the line before to workaround it.