css-tree

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

v3.1.0 URL: https://unpkg.com/css-tree@3.1.0/dist/csstree.esm.js

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css ast tokenizer parser walker lexer generator utils syntax validation

snapdragon

Easy-to-use plugin system for creating powerful, fast and versatile parsers and compilers, with built-in source-map support.

v0.12.1 URL: https://unpkg.com/snapdragon@0.12.1/index.js

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lexer snapdragon

micromark

small commonmark compliant markdown parser with positional info and concrete tokens

v4.0.2 URL: https://unpkg.com/micromark@4.0.2/index.js

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commonmark compiler gfm html lexer markdown markup md unified parse parser plugin process remark render renderer token tokenizer

leac

Lexer / tokenizer

v0.7.0 URL: https://unpkg.com/leac@0.7.0/lib/leac.cjs

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lexer tokenizer lex token

stream-json

stream-json is the micro-library of Node.js stream components for creating custom JSON processing pipelines with a minimal memory footprint. It can parse JSON files far exceeding available memory streaming individual primitives using a SAX-inspired API. I

v1.9.1 URL: https://unpkg.com/stream-json@1.9.1/index.js

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scanner lexer tokenizer parser django stream streaming json