js一个快速提取所需字符串的方法

var obj ={
"dependencies": {
    "axios": "^0.27.2",
    "lodash": "^4.17.21",
    "nanoid": "^4.0.0",
    "normalize.css": "^8.0.1",
    "pinia": "^2.0.18",
    "qs": "^6.11.0",
    "vant": "^3.5.4",
    "vue": "^3.2.37",
    "vue-router": "^4.1.3"
  },
  "devDependencies": {
    "@vitejs/plugin-vue": "^3.0.3",
    "typescript": "^4.6.4",
    "vite": "^3.0.7",
    "vue-tsc": "^0.39.5"
  }
 }
 
 const iResult = {}
 for (var key in obj){
    var objItem = obj[key]
    console.log(objItem)
    for (var item in objItem)
    {
        console.log(item)
        console.log(iResult[key])
        !iResult[key] && (iResult[key] = [])// 这里的意思是不存在直接赋值为数组
        {
            iResult[key].push(item)
        }
    }
 }
 iResult