feat!: Upgrade eslint to v8

BREAKING CHANGE: Eslint was updated from v6 to v8. Since we have multiple apps depending on frontend-build, with this upgrade these apps could end up having linting issues.

.eslintrc.js

@@ -1,4 +1,4 @@
-const { createConfig } = require('./');
+const { createConfig } = require('.');
 
 module.exports = createConfig('eslint', {
   rules: {

bin/fedx-scripts.js

@@ -50,7 +50,6 @@ switch (commandName) {
     break;
   case 'eslint':
     ensureConfigOption(presets.eslint);
-    require('eslint/bin/eslint');
     break;
   case 'jest':
     ensureConfigOption(presets.jest);

config/.eslintrc.js

@@ -1,32 +1,35 @@
 module.exports = {
-  "extends": "@edx/eslint-config",
-  "parser": "babel-eslint",
-  "rules": {
-    "import/no-extraneous-dependencies": [
-      "error",
+  extends: '@edx/eslint-config',
+  parser: '@babel/eslint-parser',
+  parserOptions: {
+    requireConfigFile: false,
+  },
+  rules: {
+    'import/no-extraneous-dependencies': [
+      'error',
       {
-        "devDependencies": [
-          "**/*.config.*",
-          "**/*.test.*",
-          "**/setupTest.js",
+        devDependencies: [
+          '**/*.config.*',
+          '**/*.test.*',
+          '**/setupTest.js',
         ],
-      }
+      },
     ],
-    "import/no-unresolved": [
-      "error",
+    'import/no-unresolved': [
+      'error',
       {
-        "ignore": [
-          "env.config"
-        ]
-      }
+        ignore: [
+          'env.config',
+        ],
+      },
     ],
     // https://github.com/evcohen/eslint-plugin-jsx-a11y/issues/340#issuecomment-338424908
-    "jsx-a11y/anchor-is-valid": [ "error", {
-      "components": [ "Link" ],
-      "specialLink": [ "to" ]
+    'jsx-a11y/anchor-is-valid': ['error', {
+      components: ['Link'],
+      specialLink: ['to'],
     }],
   },
-  "globals": {
-    "newrelic": false
-  }
-}
+  globals: {
+    newrelic: false,
+  },
+};

config/webpack.dev-stage.config.js

@@ -10,7 +10,7 @@ const PostCssAutoprefixerPlugin = require('autoprefixer');
 const PostCssRTLCSS = require('postcss-rtlcss');
 const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin');
 
-const commonConfig = require('./webpack.common.config.js');
+const commonConfig = require('./webpack.common.config');
 const presets = require('../lib/presets');
 const resolvePrivateEnvConfig = require('../lib/resolvePrivateEnvConfig');
 const getLocalAliases = require('./getLocalAliases');

config/webpack.dev.config.js

@@ -10,7 +10,7 @@ const PostCssAutoprefixerPlugin = require('autoprefixer');
 const PostCssRTLCSS = require('postcss-rtlcss');
 const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin');
 
-const commonConfig = require('./webpack.common.config.js');
+const commonConfig = require('./webpack.common.config');
 const presets = require('../lib/presets');
 const resolvePrivateEnvConfig = require('../lib/resolvePrivateEnvConfig');
 const getLocalAliases = require('./getLocalAliases');

config/webpack.prod.config.js

@@ -15,7 +15,7 @@ const PostCssAutoprefixerPlugin = require('autoprefixer');
 const PostCssRTLCSS = require('postcss-rtlcss');
 
 const HtmlWebpackNewRelicPlugin = require('../lib/plugins/html-webpack-new-relic-plugin');
-const commonConfig = require('./webpack.common.config.js');
+const commonConfig = require('./webpack.common.config');
 const presets = require('../lib/presets');
 
 // Add process env vars. Currently used only for setting the PUBLIC_PATH.

example/.eslintrc.js

@@ -1,3 +1,3 @@
-const config = require('../config/.eslintrc.js');
+const config = require('../config/.eslintrc');
 
 module.exports = config;