Rick Hanlon
64bc400c77
Summary:
This diff fixes whitespace trimming in codeframes by setting the whitespace size to 0 instead of infinity for lines that's don't have whitespace. This fixes a bug in frames where lines with 0 whitespace would not be considered.
So frames like this, where the common whitespace should be 0:
```
217 | function Hi(a?: String) {
> 218 | return Platform.OS === 'android' ? obj.die() : obj.die();
| ^
219 | }
220 |
221 | export default CrashReactApp;
```
Are instead trimmed at the second most common whitespace, which is 2. That's because line 217 has a whitespace length of 0, but we consider it as Infinity. When we get to line 218, we set the whitespace to 2. Then on line 19 we consider if 2 < Infinity and decide that the common whitespace is 2 resulting in:
```
217 | nction Hi(a?: String) {
> 218 | return Platform.OS === 'android' ? obj.die() : obj.die();
| ^
219 |
220 |
221 | port default CrashReactApp;
```
By setting the whitespace per line to 0 when there's no whitespace match, lines without whitespace can accurately report their size and move the pointer back to the 0 position.
Changelog: [Internal]
Reviewed By: cpojer
Differential Revision: D20030301
fbshipit-source-id: f1dec8cc57479f37ffa8128f93f7c8b3c6baaf91
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