微信小程序开发没域名怎么办

{
  "networkTimeout": {
    "request": 10000,
    "downloadFile": 10000
  },
  "debug": true,
  "setting": {
    "packNpmManually": true,
    "packNpmRelationList": [
      {
        "packageJsonPath": "./package.json",
        "miniprogramNpmDistDir": "./miniprogram/"
      }
    ]
  },
  "navigateToMiniProgramAppIdList": [
    "wxxxxxxxx"
  ],
  "usingComponents": {},
  "permission": {
    "scope.userLocation": {
      "desc": "你的位置信息将用于小程序位置接口的效果展示"
    }
  },
  "sitemapLocation": "sitemap.json",
  "domain": {
    "requestDomain": ["https://api.myapp.com"],
    "uploadFileDomain": ["https://upload.myapp.com"],
    "downloadFileDomain": ["https://download.myapp.com"]
  }
}