Method delete

src/lualib/Set.ts:61–88

(value: T)

    }

    public delete(value: T): boolean {
        const contains = this.has(value);
        if (contains) {
            this.size--;

            // Do order bookkeeping
            const next = this.nextKey.get(value);
            const previous = this.previousKey.get(value);
            if (next !== undefined && previous !== undefined) {
                this.nextKey.set(previous, next);
                this.previousKey.set(next, previous);
            } else if (next !== undefined) {
                this.firstKey = next;
                this.previousKey.set(next, undefined!);
            } else if (previous !== undefined) {
                this.lastKey = previous;
                this.nextKey.set(previous, undefined!);
            } else {
                this.firstKey = undefined;
                this.lastKey = undefined;
            }

            this.nextKey.set(value, undefined!);
            this.previousKey.set(value, undefined!);
        }

        return contains;
    }

    public forEach(callback: (value: T, key: T, set: Set<T>) => any): void {
        for (const key of this.keys()) {