comments following shebang are not recognised

[ajafff]

TypeScript Version: 3.2.0-dev.20181101

Search Terms: shebang comment

Code

#! node
/** text */
const v = 1;

Expected behavior:
Hovering v should show the JSDoc comment's text.

Actual behavior:
Doesn't show the JSDoc. In fact ts.forEachLeadingCommentRange and ts.forEachTrailingCommentRange aborts when encountering the shebang, so no comments are recognised.

There are a few places where this issue occurs (the reason is always the same):

• using the compiler API to visit or get comments
• retrieving JSDoc of a declaration
• declaration emitter looking for // @internal comments

Playground Link: https://agentcooper.github.io/typescript-play/#code/MQQgBAdg9gJgpgKAPQCoVgC5wB4bCpBAYyggGc8A3MAXjAEYBuIA
Dropping in an empty statement after the shebang fixes the issue: https://agentcooper.github.io/typescript-play/#code/MQQgBAdg9gJgpgKANwIPQCp1gC5wB7ZjqoIDGUEAzoQG5gC8YAjEkA

I'd like to submit a PR to fix the scanner if you accept this bug.