dashp/dist/internal/clone.js

Utilities for monadic promises.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _is = require("./is");

const clone = (obj, hash = new WeakMap()) => {
  if (Object(obj) !== obj) return obj; // primitives

  if (hash.has(obj)) return hash.get(obj); // cyclic references

  let result;
  if ((0, _is.isArray)(obj)) result = [];else if (obj.constructor) result = new obj.constructor();else result = Object.create(null);
  hash.set(obj, result);
  if (obj instanceof Map) Array.from(obj, ([key, val]) => result.set(key, clone(val, hash)));
  return Object.assign(result, ...Object.keys(obj).map(key => ({
    [key]: clone(obj[key], hash)
  })));
};

var _default = clone;
exports.default = _default;
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