Lezer
Lezer is a JavaScript-based incremental parser generator system used for building syntax-aware tools like code editors, linters, and compilers. It generates efficient parsers from grammar definitions, supporting features like error recovery and incremental parsing for real-time updates. It is part of the CodeMirror editor ecosystem and is designed to handle complex languages with high performance.
Developers should learn Lezer when building or customizing code editors, syntax highlighters, or language servers that require fast, incremental parsing for languages like JavaScript, Python, or custom DSLs. It is particularly useful for projects needing real-time feedback, such as in-browser IDEs or tools integrated with CodeMirror, due to its efficient handling of grammar changes and error tolerance.