Not throw Location.Error in the parser #1695
Merged
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Fixes #1691
This is because our public API says we only ever throw Syntaxerr.Error or Syntax_utils.Error. This caused https://github.com/facebook/reason/blob/731e605870e22fdcb3d37f3f963d346f18a072cc/bspacks/refmtJsApi.ml#L49 not to catch the extra Location.Error correctly and failing to massage the data structure before using it in the browser.