he/him 
Why do most (at least JS) parsers restrict syntax errors to a single position? eg. only a single column/line, rather than having a range of start/end? The errors would be a lot richer.
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I’ve always assumed it was bc once they encountered that error they couldn’t parse the rest of the document and find the end position. Might be a naive take on it though.
You could at least point to the start/end of the token rather than just the start. There's also parser errors that aren't necessarily due to a syntax error, but an invalid AST, where an error could be even more detailed with it's position.
