Config validation

src/config/config.ts

@@ -0,0 +1,23 @@
+import { z } from 'zod'
+
+const envVarsSchema = z.object({
+  PORT: z.string().default('5000'),
+  JWT_SECRET: z.string(),
+  DATABASE_URL: z.string(),
+})
+
+let envVars: z.infer<typeof envVarsSchema>
+try {
+  envVars = envVarsSchema.parse(process.env)
+} catch (error) {
+  if (error instanceof z.ZodError) {
+    const formattedErrors = error.errors
+      .map((err) => `${err.path.join('.')} - ${err.message}`)
+      .join('\n')
+
+    console.error('Environment variable validation errors:\n', formattedErrors)
+  }
+  process.exit(1)
+}
+
+export default envVars

src/config/passport.ts

@@ -4,10 +4,11 @@ import {
   StrategyOptions,
 } from 'passport-jwt'
 import { prisma } from '../utils'
+import config from './config'
 
 const options: StrategyOptions = {
   jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
-  secretOrKey: process.env.JWT_SECRET || 'your_jwt_secret',
+  secretOrKey: config.JWT_SECRET,
 }
 
 export const jwtStrategy = new JwtStrategy(

src/index.ts

@@ -1,6 +1,7 @@
 import app from './app'
+import config from './config/config'
 
-const port = process.env.PORT || 5000
+const port = config.PORT || 5000
 app.listen(port, () => {
   /* eslint-disable no-console */
   console.log(`Listening: http://localhost:${port}`)