Goodbye Regex. Hello Parsers!
summary
Regex breaks when routes and nested grammars need clarity so the demo replaces a tangled single regex with explicit TypeScript parsers, first built a parser from scratch to evaluate "12+34" with map many and satisfy primitives, then uses the library Parsimmon to implement URL routing, a GUID parser and a recursive angle grammar that parses nested key value structures. Tests run with TDD, negatives stay failing as intended, positives pass, and tradeoffs include performance vs readability and regex DoS.
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chapters (7)
- 0:00Start
- 0:09Hello Parsers! Hackle Wayne
- 1:09Less RegEx. More Parsers! A user's view
- 7:35Parsers can help! How, what and why
- 9:20Case study A rest-some URL
- 32:45Live coding... A naive parser from scratch
- 57:44RegEx = Parsers @hacklew
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