Hashmap Packages

The WeakIdentityMap object holds key-value pairs of weakly referenced objects and remembers the original insertion order of the keys

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it is a data structure library that you can store anything you want

A HashMap for the modern Javascript world

A map that maps a unique property in objects to the objects themselves.

Neat JavaScript collections.

Data structure and algorithms implementation in Javascript

A flexible hash map which supports deep keys.

HashMap and HashSet collections with composite keys and custom hash and equality functions

Immutable HashMap and HashSet implementations for TypeScript

An extended Map for TypeScript with Java-style utility methods.

Core safe types for Typescript