Method asArray

lib/util/StackedMap.js:159–162

* Returns the visible keys as an array after collapsing the stack. * @returns {K[]} array of keys

()

	 * @returns {K[]} array of keys
	 */
	asArray() {
		this._compress();
		return [...this.map.keys()];
	}

	/**
	 * Returns the visible keys as a `Set` after collapsing the stack.