fix: fix NODE_ENV type declaration error

.eslintignore

@@ -0,0 +1,3 @@
+node_modules
+dist
+build

.eslintrc.json

@@ -8,16 +8,18 @@
   "extends": [
     "next",
     "airbnb",
-    "plugin:cypress/recommended"
+    "airbnb-typescript",
+    "plugin:cypress/recommended",
+    "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended"
   ],
+  "parser": "@typescript-eslint/parser",
   "parserOptions": {
     "ecmaVersion": 12,
     "sourceType": "module"
   },
-  "plugins": [
-    "eslint-plugin-jsx-a11y",
-    "cypress"
-  ],
+  "plugins": ["eslint-plugin-jsx-a11y", "cypress", "@typescript-eslint"],
   "rules": {
     "function-call-argument-newline": ["off"],
     "function-paren-newline": ["off"],
@@ -35,6 +37,15 @@
     "react/no-danger": ["off"],
     "@next/next/no-html-link-for-pages": ["off"],
     "@next/next/no-img-element": ["off"],
-    "linebreak-style": ["off"]
+    "linebreak-style": ["off"],
+    "@typescript-eslint/no-unused-vars": [
+      "warn",
+      {
+        "varsIgnorePattern": "^_",
+        "argsIgnorePattern": "^_"
+      }
+    ],
+    "@typescript-eslint/no-empty-function": ["warn"],
+    "prefer-const": "error"
   }
 }

@types/console.d.ts

@@ -0,0 +1,11 @@
+declare global {
+  interface Console {
+    green(message?: any, ...optionalParams: any[]): void;
+    blue(message?: any, ...optionalParams: any[]): void;
+    red(message?: any, ...optionalParams: any[]): void;
+  }
+}
+
+// If this file has no import/export statements (i.e. is a script)
+// convert it into a module by adding an empty export statement.
+export {};

@types/environment.d.ts

@@ -0,0 +1,11 @@
+declare global {
+  namespace NodeJS {
+    interface ProcessEnv {
+      readonly NODE_ENV: 'development' | 'production' | 'test' | 'build';
+    }
+  }
+}
+
+// If this file has no import/export statements (i.e. is a script)
+// convert it into a module by adding an empty export statement.
+export {};

next-env.d.ts

@@ -0,0 +1,5 @@
+/// <reference types="next" />
+/// <reference types="next/image-types/global" />
+
+// NOTE: This file should not be edited
+// see https://nextjs.org/docs/basic-features/typescript for more information.

package.json

@@ -143,11 +143,14 @@
     "@semantic-release/git": "^9.0.0",
     "@semantic-release/npm": "^7.0.10",
     "@semantic-release/release-notes-generator": "^9.0.1",
+    "@typescript-eslint/eslint-plugin": "^5.59.6",
+    "@typescript-eslint/parser": "^5.59.6",
     "babel-loader": "^8.1.0",
     "cross-env": "^7.0.2",
     "cypress": "^6.0.0",
     "eslint": "8.34.0",
     "eslint-config-airbnb": "19.0.4",
+    "eslint-config-airbnb-typescript": "^17.0.0",
     "eslint-config-next": "13.1.6",
     "eslint-config-prettier": "8.6.0",
     "eslint-plugin-cypress": "2.12.1",
@@ -160,7 +163,8 @@
     "postcss": "^8.1.3",
     "postcss-loader": "~3.0.0",
     "postcss-preset-env": "^6.7.0",
-    "supertest": "^6.3.1"
+    "supertest": "^6.3.1",
+    "typescript": "5.0.4"
   },
   "standard-version": {
     "skip": {

src/server.js → src/server.ts

@@ -1,11 +1,12 @@
 import { PORT } from './config';
 import app from './app';
+import NodeEnv from './shared/constants/NodeEnv';
 
 const server = app.listen(PORT, () => {
   console.green(`🟢 Server started on port ${PORT}`);
 
   /* Used to test server build */
-  if (process.env.NODE_ENV === 'build') {
+  if (NodeEnv === 'build') {
     console.blue('🧪 Testing server build');
     setTimeout(() => {
       console.green('✅ Build test passed');

src/shared/constants/NodeEnv.ts

@@ -0,0 +1,3 @@
+const NodeEnv: 'development' | 'production' | 'test' | 'build' = process.env.NODE_ENV;
+
+export default NodeEnv;

tsconfig.json

@@ -1,8 +1,29 @@
 {
-    "compilerOptions": {
-      "outDir": "./built",
-      "allowJs": true,
-      "target": "es5"
-    },
-    "include": ["./src/**/*"]
-  }
+  "compilerOptions": {
+    "outDir": "./build",
+    "allowJs": true,
+    "target": "es5",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "skipLibCheck": true,
+    "strict": false,
+    "forceConsistentCasingInFileNames": true,
+    "noEmit": true,
+    "incremental": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve"
+  },
+  "include": [
+    "./src/**/*"
+, "@types"  ],
+  "exclude": [
+    "node_modules"
+  ]
+}