diary-app/vueTransformerPlugin.js

var semver = require('semver');
var vueNativeScripts = require("vue-native-scripts");

var reactNativeVersionString = require("react-native/package.json").version;

var reactNativeMinorVersion = semver(reactNativeVersionString).minor;

if (reactNativeMinorVersion >= 59) {
  upstreamTransformer = require("metro-react-native-babel-transformer");
} else if (reactNativeMinorVersion >= 56) {
  upstreamTransformer = require("metro/src/reactNativeTransformer");
} else if (reactNativeMinorVersion >= 52) {
  upstreamTransformer = require("metro/src/transformer");
} else if (reactNativeMinorVersion >= 47) {
  upstreamTransformer = require("metro-bundler/src/transformer");
} else if (reactNativeMinorVersion === 46) {
  upstreamTransformer = require("metro-bundler/build/transformer");
} else {
  // handle RN <= 0.45
  var oldUpstreamTransformer = require("react-native/packager/transformer");
  upstreamTransformer = {
    transform({ src, filename, options }) {
      return oldUpstreamTransformer.transform(src, filename, options);
    }
  };
}
var vueExtensions = ["vue"]; // <-- Add other extensions if needed.

module.exports.transform = function({ src, filename, options }) {
  if (vueExtensions.some(ext => filename.endsWith("." + ext))) {
    return vueNativeScripts.transform({ src, filename, options });
  }
  return upstreamTransformer.transform({ src, filename, options });
};