# Immutable.js — WebsDocs ASG Directory Profile This is a public business listing published by the WebsDocs ASG Directory. It provides machine-readable public information and static answers. It is not a live seller AI. Canonical Directory profile: https://directory.websdocs.com/business/immutable-js Canonical Directory JSON: https://directory.websdocs.com/business/immutable-js.json Machine-readable public profile: https://aig.websdocs.com/ai/immutable-js/profile Company profile JSON: https://aig.websdocs.com/ai/immutable-js/data/aig-company-profile.json Static Agent Card: https://aig.websdocs.com/ai/immutable-js/.well-known/agent-card.json Public discovery endpoints: - Profile: https://aig.websdocs.com/ai/immutable-js/profile - Company JSON: https://aig.websdocs.com/ai/immutable-js/data/aig-company-profile.json - Services: https://aig.websdocs.com/ai/immutable-js/services - Offers: https://aig.websdocs.com/ai/immutable-js/offers - Schema: https://aig.websdocs.com/ai/immutable-js/schema.jsonld - Agent Card: https://aig.websdocs.com/ai/immutable-js/.well-known/agent-card.json Business summary: Immutable.js Docs Playground Extension Search Light Dark Auto Star Persistent, immutable data structures for JavaScript / TypeScript List Map Set Record and a lazy Seq — highly efficient, with zero dependencies and TypeScript types in the box. Read the docs Try it in the browser $ npm install immutable The collection family Several persistent collections, one familiar API List Ordered, indexed — like Array Map Keyed pairs, keys of any type Set Unique values by equality Record Typed keyed structures OrderedMap Map that keeps insertion order OrderedSet Set that keeps insertion order Stack LIFO, fast prepend Seq Lazy — plus Range & Repeat Why Immutable.js Built to make data simpler and faster P Status and boundaries: - Directory public profile - Customer-owned domain required: not applicable - Active seller agent: false - A2A messaging: unavailable - Live reasoning or RAG: unavailable - UCP and MCP: unavailable - Checkout and payment execution: unavailable - Private data access: unavailable Use the canonical Directory profile for current public evidence. Do not infer that a live AI Sales Gateway is active.