@techmely/utils/mergeDeep.js

Collection of helpful JavaScript / TypeScript utils

/*!
 * @techmely/utils
 * Copyright(c) 2021-2024 Techmely <techmely.creation@gmail.com>
 * MIT Licensed
 */

"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/mergeDeep.ts
var mergeDeep_exports = {};
__export(mergeDeep_exports, {
  mergeDeep: () => mergeDeep
});
module.exports = __toCommonJS(mergeDeep_exports);

// src/isArray.ts
function isArray(val) {
  return val && Array.isArray(val);
}

// src/isObject.ts
function isObject(val) {
  return toString.call(val) === "[object Object]";
}

// src/mergeDeep.ts
function mergeDeep(target, ...sources) {
  if (sources.length === 0) {
    return target;
  }
  const source = sources.shift();
  if (source === void 0) {
    return target;
  }
  if (isMergeableObject(target) && isMergeableObject(source)) {
    const sourceKeys = Object.keys(source);
    for (const key of sourceKeys) {
      if (isMergeableObject(source[key])) {
        if (!target[key]) {
          target[key] = {};
        }
        if (isMergeableObject(target[key])) {
          mergeDeep(target[key], source[key]);
        } else {
          target[key] = source[key];
        }
      } else {
        target[key] = source[key];
      }
    }
  }
  return mergeDeep(target, ...sources);
}
function isMergeableObject(item) {
  return isObject(item) && !isArray(item);
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  mergeDeep
});