A Map which accepts multiple objects as a key.

Map implementation using N-tuples as multi-dimensional keys.

<!-- TupleMapはほとんどES6のMapと同じですが、tupleをキーに持つことができます。 --> TupleMap is almost same as a ES6's Map, but it can have tuples as its keys.

A Map of limited size that keeps most recently used values

An efficient memoizer for functions that only receive immutable arguments. Ideal for Redux and similar environments.

A simple way to map a tuple to some value

ES6 Map where keys are 2-tuples

A Map keyed by tuples whose entries are garbage-collected when their object components die — WeakMap edges for objects, Map edges for primitives, and a single-walk getOrInsert.