feat: Stricter Linters

.eslintrc.js

@@ -1,30 +1,46 @@
-
 const fs = require('fs');
 const path = require('path');
 
+
 const prettierOptions = JSON.parse(
   fs.readFileSync(path.resolve(__dirname, '.prettierrc'), 'utf8'),
 );
-
-// const app = JSON.parse(path.resolve(__dirname, 'app'));
-
 module.exports = {
   root: true,
   parser: 'babel-eslint',
-  extends: ['airbnb', 'prettier', 'prettier/react'],
-  plugins: ['prettier', 'redux-saga', 'react-native', 'react', 'react-hooks', 'jsx-a11y'],
+  extends: [
+    'airbnb',
+    'prettier', 
+    'prettier/react',
+    'plugin:prettier/recommended',
+    'plugin:sonarjs/recommended',
+    'plugin:security/recommended-legacy',
+    'plugin:fp/recommended'
+  ],
+  plugins: [
+    'github',
+    'immutable',
+    'sonarjs',
+    'prettier',
+    'redux-saga',
+    'react-native',
+    'react',
+    'react-hooks',
+    'jsx-a11y',
+    'fp'
+  ],
   env: {
     jest: true,
     browser: true,
     node: true,
-    es6: true,
+    es6: true
   },
   parserOptions: {
     ecmaVersion: 6,
     sourceType: 'module',
     ecmaFeatures: {
-      jsx: true,
-    },
+      jsx: true
+    }
   },
   rules: {
     'prettier/prettier': ['error', prettierOptions],
@@ -53,8 +69,8 @@ module.exports = {
         // NOTE: If this error triggers, either disable it or add
         // your custom components, labels and attributes via these options
         // See https://github.com/evcohen/eslint-plugin-jsx-a11y/blob/master/docs/rules/label-has-associated-control.md
-        controlComponents: ['Input'],
-      },
+        controlComponents: ['Input']
+      }
     ],
     'jsx-a11y/label-has-for': 0,
     'jsx-a11y/mouse-events-have-key-events': 2,
@@ -82,29 +98,76 @@ module.exports = {
     'redux-saga/no-yield-in-race': 2,
     'redux-saga/yield-effects': 2,
     'require-yield': 0,
-    'react/no-array-index-key': 0
+    'react/no-array-index-key': 0,
+    'react/jsx-curly-newline': 0,
+    'react/jsx-one-expression-per-line': 0,
+    'react/jsx-wrap-multilines': 0,
+    'react/no-unused-prop-types': 0,
+    'max-lines-per-function': ['error', 250],
+    'no-else-return': 'error',
+    'max-params': ['error', 3],
+    'require-jsdoc': [
+      'error',
+      {
+        require: {
+          FunctionDeclaration: true,
+          MethodDefinition: false,
+          ClassDeclaration: false,
+          ArrowFunctionExpression: false,
+          FunctionExpression: false
+        }
+      }
+    ],
+    'no-shadow': 'error',
+    complexity: ['error', 10],
+    'no-empty': 'error',
+    'import/order': [
+      'error',
+      {
+        groups: [
+          ['builtin', 'external', 'internal', 'parent', 'sibling', 'index']
+        ]
+      }
+    ],
+    'immutable/no-let': 2,
+    'immutable/no-this': 2,
+    'max-lines': ['error', 350],
+    'react-native/no-unused-styles': 2,
+    'react-native/split-platform-components': 2,
+    'react-native/no-inline-styles': 2,
+    'react-native/no-color-literals': 2,
+    'react-native/no-raw-text': 2,
+    'react-native/no-single-element-style-arrays': 2,
+    'fp/no-mutation': [
+      'error',
+      {
+        exceptions: [{ property: 'propTypes' }, { property: 'defaultProps' }]
+      }
+    ],
+    'fp/no-nil': 0,
+    'fp/no-unused-expression': 0
   },
-  "settings": {
-    "import/resolver": {
-      "node": {
-        "app": "./app",
-        "context": "app",
-        "resolve": {
-          "alias": {
-            "@assets": "./app/assets",
-            "@components": "./app/components",
-            "@containers": "./app/containers",
-            "@config": "./app/config",
-            "@navigators": "./app/navigators",
-            "@services": "./app/services",
-            "@themes": "./app/themes",
-            "@utils": "./app/utils"
+  settings: {
+    'import/resolver': {
+      node: {
+        app: './app',
+        context: 'app',
+        resolve: {
+          alias: {
+            '@assets': './app/assets',
+            '@components': './app/components',
+            '@containers': './app/containers',
+            '@config': './app/config',
+            '@navigators': './app/navigators',
+            '@services': './app/services',
+            '@themes': './app/themes',
+            '@utils': './app/utils'
           },
-          "paths": ["app"],
-          "modules": ["app", 'node_modules'],
-          "extensions": ['.js', '.jsx', '.json', '.coffee', '.cjsx'],
+          paths: ['app'],
+          modules: ['app', 'node_modules'],
+          extensions: ['.js', '.jsx', '.json', '.coffee', '.cjsx']
         }
       }
     }
   }
-}
+};

app/components/atoms/If/index.js

@@ -4,20 +4,23 @@
  *
  */
 // eslint-disable-next-line
-import React from 'react'
+import React from 'react';
 import Proptypes from 'prop-types';
 const If = props => (props.condition ? props.children : props.otherwise);
-If.propsTypes = {
-  condition: Proptypes.bool,
-  otherwise: Proptypes.oneOfType([
-    Proptypes.arrayOf(Proptypes.node),
-    Proptypes.node
-  ]),
-  children: Proptypes.oneOfType([
-    Proptypes.arrayOf(Proptypes.node),
-    Proptypes.node
-  ])
-};
+// eslint-disable-next-line fp/no-mutating-assign
+Object.assign(If, {
+  propsTypes: {
+    condition: Proptypes.bool,
+    otherwise: Proptypes.oneOfType([
+      Proptypes.arrayOf(Proptypes.node),
+      Proptypes.node
+    ]),
+    children: Proptypes.oneOfType([
+      Proptypes.arrayOf(Proptypes.node),
+      Proptypes.node
+    ])
+  }
+});
 If.defaultProps = {
   otherwise: null
 };

app/components/atoms/LanguageProvider/reducer.js

@@ -1,3 +1,4 @@
+/* eslint-disable sonarjs/no-small-switch */
 /*
  *
  * LanguageProvider reducer

app/components/molecules/CharacterWithQuote/index.js

@@ -17,6 +17,17 @@ const CharacterImage = styled.Image`
   margin: 0 auto;
 `;
 
+/**
+ * Renders a component displaying a character with associated quote and image.
+ *
+ * @component
+ * @param {Object} props - The props object.
+ * @param {Object} props.user - The user object containing character and quote information.
+ * @param {string} props.user.character - The character name to display.
+ * @param {string} props.user.image - The URL of the image associated with the character.
+ * @param {string} props.user.quote - The quote associated with the character.
+ * @returns {JSX.Element} A React element representing the character display with quote.
+ */
 function CharacterWithQuote({ user }) {
   return (
     <>

app/i18n.js

@@ -1,3 +1,4 @@
+/* eslint-disable fp/no-mutating-assign */
 /**
  * i18n.js
  *

app/scenes/RootScreen/reducer.js

@@ -1,3 +1,4 @@
+/* eslint-disable sonarjs/no-small-switch */
 import { createActions } from 'reduxsauce';
 import { fromJS } from 'immutable';
 import produce from 'immer';

app/scenes/RootScreen/saga.js

@@ -8,7 +8,14 @@ import { rootScreenTypes } from './reducer';
 export function* startup() {
   setTimeout(() => navigateAndReset('MainScreen'), 1000);
 }
-
+/**
+ * Generator function for the startup saga.
+ * Watches for the latest occurrence of the specified action type and triggers the startup process.
+ *
+ * @generator
+ * @function startUpSaga
+ * @yields {Effect} Effect object representing the takeLatest behavior
+ */
 export default function* startUpSaga() {
   yield takeLatest(rootScreenTypes.STARTUP, startup);
 }

app/services/navigationService.js

@@ -1,3 +1,4 @@
+/* eslint-disable fp/no-mutating-assign */
 import { NavigationActions, StackActions } from '@react-navigation/compat';
 /**
  * The navigation is implemented as a service so that it can be used outside of components, for example in sagas.

app/utils/apiUtils.js

@@ -1,3 +1,5 @@
+/* eslint-disable sonarjs/no-small-switch */
+/* eslint-disable fp/no-mutating-assign */
 import { create } from 'apisauce';
 import mapKeysDeep from 'map-keys-deep';
 import camelCase from 'lodash/camelCase';

metro.config.js

@@ -1,4 +1,5 @@
 // Learn more https://docs.expo.io/guides/customizing-metro
 const { getDefaultConfig } = require('expo/metro-config');
 
+// eslint-disable-next-line fp/no-mutation
 module.exports = getDefaultConfig(__dirname);

package.json

@@ -47,6 +47,11 @@
     "axios-mock-adapter": "^1.17.0",
     "babel-plugin-react-intl": "3.0.1",
     "babel-preset-react-native": "^4.0.1",
+    "eslint-plugin-fp": "^2.3.0",
+    "eslint-plugin-github": "^4.10.2",
+    "eslint-plugin-immutable": "^1.0.0",
+    "eslint-plugin-security": "^3.0.0",
+    "eslint-plugin-sonarjs": "^0.25.1",
     "expo": "~47.0.14",
     "expo-image-picker": "~14.0.1",
     "expo-splash-screen": "~0.17.5",