编译成飞书小程序，index.vue文件中this.$refs为空，index.vue换成其他名字就可以了

**问题描述**
uni-app编译成飞书小程序，路由文件pages/*/index.vue中,使用uni-forms组件，绑定ref属性，然后事件函数中this.$refs为空，把index.vue换成其他名字就可以了。

package.json中的依赖
"dependencies": {
"@dcloudio/uni-app-plus": "^2.0.1-33920220208001",
"@dcloudio/uni-h5": "^2.0.1-33920220208001",
"@dcloudio/uni-helper-json": "*",
"@dcloudio/uni-i18n": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-360": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-alipay": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-baidu": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-jd": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-kuaishou": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-lark": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-qq": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-toutiao": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-vue": "^2.0.1-33920220208001",
"@dcloudio/uni-mp-weixin": "^2.0.1-33920220208001",
"@dcloudio/uni-quickapp-native": "^2.0.1-33920220208001",
"@dcloudio/uni-quickapp-webview": "^2.0.1-33920220208001",
"@dcloudio/uni-stat": "^2.0.1-33920220208001",
"@dcloudio/uni-ui": "^1.4.12",
"@vue/shared": "^3.0.0",
"core-js": "^3.6.5",
"crypto-js": "^4.1.1",
"dayjs": "^1.11.2",
"flyio": "^0.6.2",
"regenerator-runtime": "^0.12.1",
"vue": "^2.6.11",
"vue-class-component": "^6.3.2",
"vue-property-decorator": "^8.0.0",
"vuex": "^3.2.0"
},
"devDependencies": {
"@babel/plugin-syntax-typescript": "^7.2.0",
"@babel/runtime": "~7.12.0",
"@dcloudio/types": "*",
"@dcloudio/uni-automator": "^2.0.1-33920220208001",
"@dcloudio/uni-cli-i18n": "^2.0.1-33920220208001",
"@dcloudio/uni-cli-shared": "^2.0.1-33920220208001",
"@dcloudio/uni-migration": "^2.0.1-33920220208001",
"@dcloudio/uni-template-compiler": "^2.0.1-33920220208001",
"@dcloudio/vue-cli-plugin-hbuilderx": "^2.0.1-33920220208001",
"@dcloudio/vue-cli-plugin-uni": "^2.0.1-33920220208001",
"@dcloudio/vue-cli-plugin-uni-optimize": "^2.0.1-33920220208001",
"@dcloudio/webpack-uni-mp-loader": "^2.0.1-33920220208001",
"@dcloudio/webpack-uni-pages-loader": "^2.0.1-33920220208001",
"@types/crypto-js": "^4.1.1",
"@vue/cli-plugin-babel": "~4.5.15",
"@vue/cli-plugin-typescript": "~4.5.11",
"@vue/cli-service": "~4.5.15",
"babel-plugin-import": "^1.11.0",
"cross-env": "^7.0.2",
"jest": "^25.4.0",
"mini-types": "*",
"miniprogram-api-typings": "*",
"postcss-comment": "^2.0.0",
"sass": "1.49.7",
"sass-loader": "10.1.1",
"typescript": "^3.0.0",
"vue-template-compiler": "^2.6.11"
}
**预期结果**
能够获取this.$refs，从而进行this.$refs[ref].validate()操作

**实际结果**
this.$refs为{}

**补充信息**
解决方法：
index.vue 换成 xxx.vue 等其他名字就可以了