webpack-resolve-mode-plugin 

```
resolve: {
  plugins: [
      new WebpackResolverModePlugin({
        excludes: /node_modules/,
        includeFileSuffix: [".js", ".jsx"],
        mode: "h5",
      })
    ],
},
```
配置如上，如果文件中只有app.js，但是没有app.h5.js，编译会报错。
预期是：可以匹配到app.js