Simple Pool pattern in Typescript

pool.ts

interface Pool<T> {
  get(): T;
  release(t: T): void;
}

class BasePool<T> implements Pool<T> {
  private readonly elements: T[] = [];

  constructor(
    private readonly allocator: () => T,
  ) {}

  get(): T {
    if (this.elements.length > 0) {
      return this.elements.pop();
    }
    return this.allocator()
  }

  release(t: T): void {
    this.elements.push(t);
  }
}