ヤミRoot VoidGate

Viewing: index.mjs

export default function klona(x) {
	if (typeof x !== 'object') return x;

	var k, tmp, str=Object.prototype.toString.call(x);

	if (str === '[object Object]') {
		if (x.constructor !== Object && typeof x.constructor === 'function') {
			tmp = new x.constructor();
			for (k in x) {
				if (tmp.hasOwnProperty(k) && tmp[k] !== x[k]) {
					tmp[k] = klona(x[k]);
				}
			}
		} else {
			tmp = {}; // null
			for (k in x) {
				if (k === '__proto__') {
					Object.defineProperty(tmp, k, {
						value: klona(x[k]),
						configurable: true,
						enumerable: true,
						writable: true,
					});
				} else {
					tmp[k] = klona(x[k]);
				}
			}
		}
		return tmp;
	}

	if (str === '[object Array]') {
		k = x.length;
		for (tmp=Array(k); k--;) {
			tmp[k] = klona(x[k]);
		}
		return tmp;
	}

	if (str === '[object Set]') {
		tmp = new Set;
		x.forEach(function (val) {
			tmp.add(klona(val));
		});
		return tmp;
	}

	if (str === '[object Map]') {
		tmp = new Map;
		x.forEach(function (val, key) {
			tmp.set(klona(key), klona(val));
		});
		return tmp;
	}

	if (str === '[object Date]') {
		return new Date(+x);
	}

	if (str === '[object RegExp]') {
		tmp = new RegExp(x.source, x.flags);
		tmp.lastIndex = x.lastIndex;
		return tmp;
	}

	if (str.slice(-6) === 'Array]') {
		return new x.constructor(x);
	}

	return x;
}

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