The Aikido Safe Chain wraps around the [npm cli](https://github.com/npm/cli), [npx](https://github.com/npm/cli/blob/latest/docs/content/commands/npx.md), [yarn](https://yarnpkg.com/), [pnpm](https://pnpm.io/), [pnpx](https://pnpm.io/cli/dlx), [rush](https

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.

🔥 An extremely fast and efficient LRU cache for JavaScript with high compatibility (including Browsers).

Gather string index ranges

binary heap (priority queue) algorithms (ported from Python's heapq module)

Streaming text decoder that preserves multibyte Unicode characters

Server-side library for working with Expo using Node.js

The sequencer client is the proposer-side counterpart to the [validator client](../validator-client/README.md): it builds checkpoints, broadcasts the block and checkpoint proposals that validators attest to, and publishes the resulting checkpoint to L1. I

Light client that connects to Polkadot and Substrate-based blockchains

Old abstractions from LangChain.js

queue-lit is a tiny queue data structure in case you `Array#push()` or `Array#shift()` on large arrays very often

[![NPM version][npm-image]][npm-url] [![NPM downloads][npm-downloads]][npm-url] [![CI Status][ci-image]][ci-url]

Efficient path tracking and pattern matching for XML/JSON parsers

Efficient Binary heap (priority queue, binary tree) data structure for JavaScript / TypeScript. Includes JavaScript methods, Python's heapq module methods, and Java's PriorityQueue methods.

The set of canonical Unicode property names supported in ECMAScript RegExp property escapes.

Unicode property alias mappings in JavaScript format for property names that are supported in ECMAScript RegExp property escapes.

tsParticles push external interaction

Node.js implementation of a proxy server (think Squid) with support for SSL, authentication, upstream proxy chaining, and protocol tunneling.

Educational demo: a deliberately vulnerable npm package showing how GitHub Actions cache poisoning can produce a malicious release without stealing any credential. Do NOT use in production.

🛡️ Faster SQL escape and format for JavaScript (Node.js, Bun, and Deno).