add eslint configs

.eslintrc.js

@@ -0,0 +1,69 @@
+const INDENT = 4;
+
+module.exports = {
+    extends: 'airbnb',
+    env: {
+        webextensions: true,
+        browser: true
+    },
+    parser: 'babel-eslint',
+    parserOptions: {
+        ecmaVersion: 2017,
+        ecmaFeatures: {
+            experimentalObjectRestSpread: true
+        }
+    },
+    settings: {
+        'import/resolver': {
+            webpack: {
+                config: './webpack/dev.js'
+            }
+        }
+    },
+    rules: {
+        indent: ['error', INDENT, {
+            SwitchCase: 1
+        }],
+        'linebreak-style': 'off',
+        'comma-dangle': ['error', 'never'],
+        'brace-style': ['error', 'stroustrup', {
+            'allowSingleLine': false
+        }],
+        'object-curly-spacing': ['error', 'never'],
+        'no-unused-expressions': ['error', {
+            allowShortCircuit: true,
+            allowTernary: true
+        }],
+        'max-len': 'off',
+        'no-param-reassign': 'off',
+        'one-var': ['error', {
+            initialized: 'never'
+        }],
+        'one-var-declaration-per-line': ['error', 'initializations'],
+        'arrow-parens': 'off',
+
+        'react/jsx-filename-extension': ['error', {extensions: ['.js']}],
+        'react/jsx-indent': ['error', INDENT],
+        'react/jsx-indent-props': ['error', INDENT],
+        'react/jsx-space-before-closing': ['error', 'never'],
+        'react/forbid-prop-types': 'off',
+        'react/no-unused-prop-types': ['error', {
+            skipShapeProps: true
+        }],
+        'react/sort-comp': ['error', {
+            order: [
+                'static-methods',
+                'lifecycle',
+                '/^render.+$/',
+                'render',
+                '/^on.+$/',
+                '/^(get|set)(?!(InitialState$|DefaultProps$|ChildContext$)).+$/',
+                'everything-else'
+            ],
+        }],
+
+
+        'import/prefer-default-export': 'off',
+        'jsx-a11y/no-static-element-interactions': 'off'
+    }
+};

scripts/.eslintrc.js

@@ -0,0 +1,10 @@
+module.exports = {
+    rules: {
+        'no-console': 'off',
+        'import/no-extraneous-dependencies': ['error', {
+            devDependencies: true,
+            optionalDependencies: false,
+            peerDependencies: false
+        }]
+    }
+};

src/pages/shared/utils/i18n.js

@@ -14,7 +14,7 @@ function parseDate(value) {
 }
 
 function date(value) {
-    const date = parseDate(value);
+    const date = parseDate(value); // eslint-disable-line no-shadow
     const currentDate = new Date();
     let yearPostfix = '';
 

webpack/.eslintrc.js

@@ -0,0 +1,10 @@
+module.exports = {
+    rules: {
+        'no-console': 'off',
+        'import/no-extraneous-dependencies': ['error', {
+            devDependencies: true,
+            optionalDependencies: false,
+            peerDependencies: false
+        }]
+    }
+};