Add new files for VueJS 3

.eslintrc.cjs

@@ -0,0 +1,14 @@
+/* eslint-env node */
+require('@rushstack/eslint-patch/modern-module-resolution')
+
+module.exports = {
+  root: true,
+  'extends': [
+    'plugin:vue/vue3-essential',
+    'eslint:recommended',
+    '@vue/eslint-config-prettier/skip-formatting'
+  ],
+  parserOptions: {
+    ecmaVersion: 'latest'
+  }
+}

.prettierrc.json

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+{
+  "$schema": "https://json.schemastore.org/prettierrc",
+  "semi": false,
+  "tabWidth": 2,
+  "singleQuote": true,
+  "printWidth": 100,
+  "trailingComma": "none"
+}

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+  "recommendations": [
+    "Vue.volar",
+    "dbaeumer.vscode-eslint",
+    "esbenp.prettier-vscode"
+  ]
+}

jsconfig.json

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+{
+  "compilerOptions": {
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "exclude": ["node_modules", "dist"]
+}

src/focus.js

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+// got rid of compatible check for Vue 3
+// import Vue from 'vue';
+
+// export var version = '2.1.0';
+
+// var compatible = (/^2\./).test(Vue.version);
+// if (!compatible) {
+//   Vue.util.warn('VueFocus ' + version + ' only supports Vue 2.x, and does not support Vue ' + Vue.version);
+// }
+
+
+export var focus = {
+  inserted: function(el, binding) {
+    if (binding.value) el.focus();
+    else el.blur();
+  },
+
+  componentUpdated: function(el, binding) {
+    if (binding.modifiers.lazy) {
+      if (Boolean(binding.value) === Boolean(binding.oldValue)) {
+        return;
+      }
+    }
+
+    if (binding.value) el.focus();
+    else el.blur();
+  },
+};
+
+export var mixin = {
+  directives: {
+    focus: focus,
+  },
+};

vite.config.js

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+import { fileURLToPath, URL } from 'node:url'
+
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [
+    vue()
+  ],
+  resolve: {
+    alias: {
+      '@': fileURLToPath(new URL('./src', import.meta.url))
+    }
+  },
+  server: {
+    host: true
+  }
+})