That is what I thought before. But what this library and some others are aiming for is the NEXT level of parsing difficulty: Parsers that work AND also provide

That is what I thought before. But what this library and some others are aiming for is the NEXT level of parsing difficulty: Parsers that work AND also provide high-fidelity output for SEVERAL consumers (IDE, editors, linters, ...) AND provide high-quality errors (aka: diagnostics) AND provide suggestion to fix that errors. That is another level! MUCH HARDER!