[CI] Add eslint rules.

.github/workflows/checks.yml

@@ -1,34 +1,35 @@
 name: CI Checks
 
-on: [push, pull_request]
+on:
+  push:
+    paths:
+      - "expo-boomboomapp/**"
+      - .github/workflows/checks.yml
+  pull_request:
+
+defaults:
+  run:
+    working-directory: expo-boomboomapp
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-
-      - name: Use Node.js
-        uses: actions/setup-node@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v2
         with:
-          node-version: '21'
+          node-version: 21
+          cache: npm
+          cache-dependency-path: "expo-boomboomapp/package-lock.json"
 
       - name: Install Dependencies
-        run: |
-          cd expo-boomboomapp
-          npm install
+        run: npm install
 
       - name: Run Lint
-        run: |
-          cd expo-boomboomapp
-          npm run lint
+        run: npm run lint
 
       - name: Check Formatting
-        run: |
-          cd expo-boomboomapp
-          npm run format-check
+        run: npm run format-check
 
       - name: Check Ts
-        run: |
-          cd expo-boomboomapp
-          npm run ts-check
+        run: npm run ts-check

expo-boomboomapp/.eslintrc.js

@@ -1,4 +1,54 @@
 module.exports = {
   root: true,
-  extends: ["universe/native"],
+  env: {
+    browser: true,
+    es2021: true,
+    node: true,
+  },
+  extends: [
+    "universe/native",
+    "@react-native",
+    "plugin:jest/recommended",
+    "eslint:recommended",
+    "plugin:react/recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:import/typescript",
+    "plugin:react-hooks/recommended",
+    "prettier",
+  ],
+  overrides: [],
+  parser: "@typescript-eslint/parser",
+  parserOptions: {
+    ecmaVersion: "latest",
+    sourceType: "module",
+  },
+  plugins: [
+    "react",
+    "@typescript-eslint",
+    "import",
+    "react-hooks",
+    "react-native",
+    "unused-imports",
+  ],
+  rules: {
+    "no-redeclare": "error",
+    "react/prop-types": "off",
+    "react/jsx-boolean-value": "error",
+    "react/react-in-jsx-scope": "off",
+    "react-native/no-unused-styles": "error",
+    "react-native/no-color-literals": "warn",
+    "react-native/no-inline-styles": "off", // TODO: Turn on an fix this errors
+    "react/no-unescaped-entities": [
+      "error",
+      {
+        forbid: [
+          {
+            char: ">",
+            alternatives: [">"],
+          },
+        ],
+      },
+    ],
+    "unused-imports/no-unused-imports": "error",
+  },
 };

expo-boomboomapp/.prettierrc.json

@@ -0,0 +1 @@
+{}