feat: added type safety env resolver

Author: XronTrix10

.env.sample

@@ -0,0 +1,2 @@
+NODE_ENV=DEVELOPMENT
+PORT=5000

package.json

@@ -43,8 +43,10 @@
     "typescript-eslint": "^8.29.1"
   },
   "dependencies": {
+    "dotenv": "^16.5.0",
     "module-alias": "^2.2.3",
-    "winston": "^3.17.0"
+    "winston": "^3.17.0",
+    "zod": "^3.24.3"
   },
   "_moduleAliases": {
     "@": "./build"

pnpm-lock.yaml

@@ -1,4 +1,6 @@
 import "module-alias/register"; // Register alias for @/ directory
 import logger from "@/lib/logger";
 
-logger.info("Hello TypeScript!");
+import { env } from "./lib/env.config";
+
+logger.info(`Hello TypeScript From Port ${env.PORT}!`);

src/index.ts

@@ -0,0 +1,28 @@
+import path from "path";
+
+import { config } from "dotenv";
+import { z } from "zod";
+
+import logger from "./logger";
+
+// Load environment variables from .env file
+config({ path: path.resolve(process.cwd(), ".env") });
+
+// Define the environment schema
+const envSchema = z.object({
+  // Required variables
+  NODE_ENV: z.enum(["DEVELOPMENT", "PRODUCTION"]),
+  PORT: z.string().transform((val) => parseInt(val, 10)),
+});
+
+// Parse and validate environment variables
+const envParse = envSchema.safeParse(process.env);
+
+if (!envParse.success) {
+  logger.error("❌ Invalid environment variables:");
+  logger.error(envParse.error.format());
+  throw new Error("Invalid environment variables");
+}
+
+// Export validated environment variables
+export const env = envParse.data;