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

v3.0.1 URL: https://unpkg.com/css-tree@3.0.1/dist/csstree.esm.js

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css ast tokenizer parser walker lexer generator utils syntax validation

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

antlr4

JavaScript runtime for ANTLR4

v4.13.2 URL: https://unpkg.com/antlr4@4.13.2/dist/antlr4.web.mjs

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lexer parser antlr antlr4 grammar

php-parser

Parse PHP code from JS and returns its AST

v3.2.1 URL: https://unpkg.com/php-parser@3.2.1/dist/php-parser.js

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php php5 php7 php8 parser lexer tokenizer ast

micromark

small commonmark compliant markdown parser with positional info and concrete tokens

v4.0.1 URL: https://unpkg.com/micromark@4.0.1/index.js

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