MPEG2 transport stream parser for Node.js with support for television broadcast PSIP tables
XML stream parser for parsing large files efficiently with less usage of memory.
A 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.
AWS Kinesis Video Stream Parser Library
Generic stream parser for Node.js

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MPEG2 transport stream parser library with support for television broadcast PSIP tables
Streaming, source-agnostic EventSource/Server-Sent Events parser
Option parsing for Node, supporting types, shorthands, etc. Used by npm.
minimal implementation of a PassThrough stream
XML stream parser for parsing large files efficiently with less usage of memory.
Parse JSON streams into JS objects.
XML stream parser for parsing large files efficiently with less usage of memory.
CSV parsing implementing the Node.js `stream.Transform` API
Core process driver, stream parser, and session manager for CDK. Electron-free.
git-log-parser
tar-stream is a streaming tar parser and generator and nothing else. It operates purely using streams which means you can easily extract/parse tarballs without ever hitting the file system.
RFC 4180 CSV stream parser
Fluent bytes stream parser and builder
A lenient XML stream parser for Node.js and browsers that can handle incomplete or malformed XML data, with depth control, CDATA support for XML serialization and round-trip parsing, wildcard pattern support for stopNodes, and CDATA handling within stopNo
An evented streaming XML parser in JavaScript
MermaidJS parser
Parse and compile gettext po and mo files to/from json, nothing more, nothing less