md/babel.config.js

const plugins = [];

if (process.env.UNI_OPT_TREESHAKINGNG) {
  plugins.push(
    require("@dcloudio/vue-cli-plugin-uni-optimize/packages/babel-plugin-uni-api/index.js")
  );
}

if (
  (process.env.UNI_PLATFORM === "app-plus" && process.env.UNI_USING_V8) ||
  (process.env.UNI_PLATFORM === "h5" &&
    process.env.UNI_H5_BROWSER === "builtin")
) {
  const path = require("path");

  const isWin = /^win/.test(process.platform);

  const normalizePath = (path) => (isWin ? path.replace(/\\/g, "/") : path);

  const input = normalizePath(process.env.UNI_INPUT_DIR);
  try {
    plugins.push([
      require("@dcloudio/vue-cli-plugin-hbuilderx/packages/babel-plugin-console"),
      {
        file(file) {
          file = normalizePath(file);
          if (file.indexOf(input) === 0) {
            return path.relative(input, file);
          }
          return false;
        },
      },
    ]);
  } catch (e) {}
}

process.UNI_LIBRARIES = process.UNI_LIBRARIES || ["@dcloudio/uni-ui"];
process.UNI_LIBRARIES.forEach((libraryName) => {
  plugins.push([
    "import",
    {
      libraryName: libraryName,
      customName: (name) => {
        return `${libraryName}/lib/${name}/${name}`;
      },
    },
  ]);
});
module.exports = {
  presets: [
    [
      "@vue/app",
      {
        modules: "commonjs",
        useBuiltIns: process.env.UNI_PLATFORM === "h5" ? "usage" : "entry",
      },
    ],
  ],
  plugins,
};