Update ESLint to a newer version

.eslintrc.js

@@ -2,7 +2,8 @@ module.exports = {
   root: true,
   parserOptions: {
     parser: 'babel-eslint',
-    sourceType: 'module'
+    sourceType: 'module',
+    "ecmaVersion": 2020
   },
   // https://github.com/feross/standard/blob/master/RULES.md#javascript-standard-style
   extends: [
@@ -21,6 +22,17 @@ module.exports = {
     'generator-star-spacing': 0,
     // allow debugger during development
     'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0,
-    'vue/require-prop-types': 0
+    'vue/attribute-hyphenation': 'off',
+    'vue/attributes-order': 'off',
+    'vue/component-definition-name-casing': 'off',
+    'vue/component-tags-order': 'off',
+    'vue/html-closing-bracket-spacing': 'off',
+    'vue/html-indent': 'off',
+    'vue/multi-word-component-names': 'off',
+    'vue/no-lone-template': 'off',
+    'vue/no-reserved-component-names': 'off',
+    'vue/no-v-text-v-html-on-component': 'off',
+    'vue/require-prop-types': 0,
+    'vue/v-slot-style': 'off'
   }
 }

package.json

@@ -52,7 +52,7 @@
     "@vue/babel-preset-jsx": "^1.2.4",
     "@vue/test-utils": "^1.0.0-beta.26",
     "autoprefixer": "^6.4.0",
-    "babel-eslint": "^7.0.0",
+    "babel-eslint": "^10.1.0",
     "babel-loader": "^8.0.6",
     "babel-plugin-lodash": "^3.3.4",
     "chai": "^3.5.0",
@@ -63,15 +63,15 @@
     "cross-spawn": "^4.0.2",
     "css-loader": "^0.28.0",
     "custom-event-polyfill": "^1.0.7",
-    "eslint": "^5.16.0",
+    "eslint": "^7.32.0",
     "eslint-config-standard": "^12.0.0",
     "eslint-friendly-formatter": "^2.0.5",
-    "eslint-loader": "^2.1.0",
+    "eslint-loader": "^4.0.2",
     "eslint-plugin-import": "^2.13.0",
     "eslint-plugin-node": "^7.0.0",
     "eslint-plugin-promise": "^4.0.0",
     "eslint-plugin-standard": "^4.0.0",
-    "eslint-plugin-vue": "^5.2.2",
+    "eslint-plugin-vue": "^9.9.0",
     "eventsource-polyfill": "^0.9.6",
     "express": "^4.13.3",
     "file-loader": "^3.0.1",