@contextjs/collections/hash-set{t}.js

Strongly-typed collection classes for TypeScript, including List, Dictionary, Queue, Stack, and HashSet.

export class HashSet {
    items = [];
    equals;
    constructor(equals) {
        this.equals = equals ?? ((a, b) => a === b);
    }
    add(item) {
        if (!this.has(item))
            this.items.push(item);
    }
    remove(item) {
        const index = this.items.findIndex(x => this.equals(x, item));
        if (index >= 0)
            this.items.splice(index, 1);
    }
    has(item) {
        return this.items.some(x => this.equals(x, item));
    }
    clear() {
        this.items.length = 0;
    }
    get count() {
        return this.items.length;
    }
    get isEmpty() {
        return this.items.length === 0;
    }
    toArray() {
        return [...this.items];
    }
}