Wrappers around Map with utility functions for maps containing arrays or sets of items for each key.
Install the package into your dependencies
pnpm add @woubuc/multimap
Use the map
import { ArrayMap, SetMap } from '@woubuc/multimap';
let arrays = new ArrayMap();
arrays.set('foo', [1]); // foo: [1]
arrays.push('foo', 2); // foo: [1, 2]
arrays.delete('foo'); // foo: undefined
arrays.push('foo', 3); // foo: [3]
let sets = new SetMap();
sets.add('foo', 1); // foo: Set(1)
sets.add('foo', 1); // foo: Set(1)
sets.add('foo', 2); // foo: Set(1, 2)