Fast and powerful CSV (delimited text) parser that gracefully handles large files and malformed input
- csv
- javascript
- csv-parser
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High-performance Protocol Buffers for JavaScript and TypeScript. Conformant through Edition 2026, and unusually versatile. No protoc required.
- javascript
- typescript
- protobuf
- protocol-buffers
JSON in JavaScript
Parse and stringify URL query strings
- query-string
- urlsearchparams
- url
- stringify
A streaming approach to JSON. Oboe.js speeds up web applications by providing parsed objects before the response completes.
Validate XML, Parse XML and Build XML rapidly without C/C++ based libraries and no callback.
- fast-xml-parser
- xml2json
- xml2js
- fast
Feather: fast, interoperable binary data frame storage for Python, R, and more powered by Apache Arrow
Streaming csv parser inspired by binary-csv that aims to be faster than everyone else
A sax style parser for JS