merge.ts

/**
 * merge
 *
 * const object = {
 *   'a': [{ 'b': 2 }, { 'd': 4 }]
 * }
 *
 * const other = {
 *   'a': [{ 'c': 3 }, { 'e': 5 }]
 * }
 *
 * merge(object, other)
 * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
 */

export default function merge(obj1: any, obj2: any) {
  if (typeof obj1 !== 'object' || !obj1 || typeof obj2 !== 'object' || !obj2) {
    throw new Error('[merge] 参数错误')
  }

  Object.keys(obj2).forEach(key => {
    const val = obj2[key]
    if (key in obj1) {
      if (typeof obj1[key] !== 'object' || typeof val !== 'object') {
        obj1[key] = val
      } else {
        merge(obj1[key], val)
      }
    } else {
      obj1[key] = val
    }
  })

  return obj1
}