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@@ -0,0 +1,19 @@
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+function deepClone(obj, hash = new WeakMap()) {
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+ if (obj === null) return obj;
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+ if (obj instanceof Date) return new Date(obj);
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+ if (obj instanceof RegExp) return new RegExp(obj);
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+
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+ if (typeof obj !== "object") return obj;
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+
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+ if (hash.get(obj)) return hash.get(obj);
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+ let cloneObj = new obj.constructor();
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+
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+ hash.set(obj, cloneObj);
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+ for (let key in obj) {
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+ if (obj.hasOwnProperty(key)) {
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+
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+ cloneObj[key] = deepClone(obj[key], hash);
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+ }
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+ }
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+ return cloneObj;
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+ }
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