This is the same as Set but supports objects. Like https://github.com/szikszail/object-set-type but fast.

ObjectSet.ts

/**
 * This is the same as Set but supports objects.
 * Like https://github.com/szikszail/object-set-type but fast.
 */
export class ObjectSet<T> {
    _set: Set<string>
    constructor(arr: T[] = []) {
        this._set = new Set(arr.map(x => JSON.stringify(x)))
    }

    add(value: any): this {
        this._set.add(JSON.stringify(value))
        return this
    }

    has(value: any): boolean {
        return this._set.has(JSON.stringify(value))
    }

    *[Symbol.iterator]() {
        for (const str of this._set) {
            yield JSON.parse(str)
        }
    }
}