Parsers and serialisers

12-month change compares the average of the last 4 weeks of downloads with the first 4 weeks of the 52-week series. Gzip size is for the whole package, as measured by Bundlephobia. "-" means the value has not been fetched.

• cronerTrigger functions and/or evaluate cron expressions in JavaScript. No dependencies. Most features. All environments.
• stream-jsonA micro-library of stream components for building custom JSON and JSONC processing pipelines with a minimal memory footprint — parse, filter, and transform JSON far larger than available memory with a SAX-inspired token API, on Node.js or Web Streams.
• turndownA library that converts HTML to Markdown
• postal-mimeEmail parser for Node.js and browser environments
• mdast-util-definitionsmdast utility to find definition nodes in a tree
• @zkochan/js-yamlYAML 1.2 parser and serializer
• web-tree-sitterTree-sitter bindings for the web
• json-stringify-pretty-compactThe best of both `JSON.stringify(obj)` and `JSON.stringify(obj, null, indent)`.
• @hapi/formulaMath and string formula parser.
• protocol-buffers-schemaNo nonsense protocol buffers schema parser written in Javascript
• postcss-values-parserA CSS property value parser for use with PostCSS
• @iarna/tomlBetter TOML parsing and stringifying all in that familiar JSON interface.
• lopCreate parsers using parser combinators with helpful error messages
• remark-mathremark plugin to parse and stringify math
• nearleySimple, fast, powerful parser toolkit for JavaScript.
• partial-jsonParse partial JSON generated by LLM
• lightningcss-linux-arm64-muslA CSS parser, transformer, and minifier written in Rust
• mdast-util-frontmattermdast extension to parse and serialize frontmatter (YAML, TOML, etc)
• micromark-extension-frontmattermicromark extension to support frontmatter (YAML, TOML, etc)
• micromark-extension-directivemicromark extension to support generic directives (`:cite[smith04]`)
• rehype-katexrehype plugin to transform inline and block math with KaTeX
• lightningcss-darwin-arm64A CSS parser, transformer, and minifier written in Rust
• jsonc-eslint-parserJSON, JSONC and JSON5 parser for use with ESLint plugins
• @peculiar/json-schemaThis package uses ES2015 decorators to simplify JSON schema creation and use
• cssCSS parser / stringifier
• lightningcss-win32-x64-msvcA CSS parser, transformer, and minifier written in Rust
• bfjBig-friendly JSON. Asynchronous streaming functions for large JSON data sets.
• json-to-pretty-yamlA node module to convert JSON to YAML
• grammexA tiny, PEG-like system for building language grammars with regexes.
• safe-json-stringifyPrevent defined property getters from throwing errors
• streamdownA drop-in replacement for react-markdown, designed for AI-powered streaming.
• remarkmarkdown processor powered by plugins part of the unified collective
• remark-frontmatterremark plugin to support frontmatter (yaml, toml, and more)
• @microsoft/tsdoc-configA loader for the tsdoc.json file
• @webassemblyjs/wast-parserWebAssembly text format parser
• sdp-transformA simple parser/writer for the Session Description Protocol
• mdast-util-directivemdast extension to parse and serialize generic directives (`:cite[smith04]`)
• parse5-html-rewriting-streamStreaming HTML rewriter.
• tree-sitter-bashBash grammar for tree-sitter
• parse5-sax-parserStreaming SAX-style HTML parser.
• markdown-to-jsxA very fast and versatile markdown toolchain. AST, React, React Native, SolidJS, Vue, Markdown, and HTML output available with full customization.
• parse-statementsFast and easy parser of statements in source code in any language ✂️
• remark-breaksremark plugin to add break support, without needing spaces
• @npmcli/querynpm query parser and tools
• parse-imports-exportsFast and easy parser for declarations of import and export in ECMAScript/TypeScript
• detective-postcssDetective to find dependents of CSS (PostCSS dialect)
• mdast-util-newline-to-breakmdast utility to support hard breaks without needing spaces or escapes
• lightningcss-darwin-x64A CSS parser, transformer, and minifier written in Rust
• po-parserParses and serializes `.po` file content.
• @chevrotain/regexp-to-astParses a Regular Expression and outputs an AST

• htmlparser2 vs cssom
• css-tree vs lightningcss
• esprima vs meriyah
• markdown-it vs markdown-exit
• turndown vs showdown
• @mdxeditor/editor vs @uiw/react-md-editor
• markdownlint-cli2 vs markdownlint-cli
• @mdx-js/react vs @mdxeditor/editor
• @uiw/react-md-editor vs markdown-exit
• @uiw/react-md-editor vs easymde
• @mdxeditor/editor vs easymde
• react-markdown vs @mdx-js/react
• @mdx-js/react vs markdown-to-jsx
• defuddle vs md-to-pdf
• pino vs roarr
• cheerio vs html-react-parser
• htmlparser2 vs html-react-parser
• react-markdown vs markdown-to-jsx
• @mdxeditor/editor vs react-native-enriched-markdown
• @microsoft/tsdoc vs jsdoc-to-markdown
• markdown-exit vs snarkdown
• doctoc vs jsdoc-to-markdown
• react-markdown vs @mdxeditor/editor
• snarkdown vs @tryfabric/martian
• turndown vs snarkdown
• conf vs convict
• markdown-it vs turndown
• xlsx vs fast-formula-parser
• json-schema-to-ts vs prisma-json-types-generator
• @microsoft/tsdoc vs vue-docgen-api