Inconsistent JS hints depending on whitespace #5263

Steps to reproduce:

1. Open Document.js (in Brackets source)
2. Go to the end of the line before the last line in the Document constructor
3. Set indentation to 2 spaces
4. Press enter
5. The cursor will be on the next line, two characters to the left of where this.refreshText appears on the line above
6. Type this.

The code hints are displayed as if there is no known context. If you line up the new line with the line above, the correct hints (for Document) are given.

Low priority, to me (calling this low priority because most people don't use inconsistent indentation).