chore: add env with type safe

package.json

@@ -11,6 +11,7 @@
   "dependencies": {
     "@auth/prisma-adapter": "^1.0.1",
     "@prisma/client": "^5.2.0",
+    "@t3-oss/env-nextjs": "^0.6.1",
     "axios": "^1.4.0",
     "jsonwebtoken": "^9.0.1",
     "next": "13.4.13",

src/app/api/auth/[...nextauth]/route.ts

@@ -5,13 +5,14 @@ import NextAuth, { NextAuthOptions } from 'next-auth'
 import { prisma } from '@/libs/prisma'
 import { Adapter } from 'next-auth/adapters'
 import { CustomPrismaAdapter } from '@/libs/next-auth/prisma-adapter'
+import { env } from '@/env'
 
 export const handler: NextAuthOptions = NextAuth({
   adapter: CustomPrismaAdapter(prisma) as Adapter,
   providers: [
     GitHubProvider({
-      clientId: process.env.GITHUB_ID ?? '',
-      clientSecret: process.env.GITHUB_SECRET ?? '',
+      clientId: env.GITHUB_ID,
+      clientSecret: env.GITHUB_SECRET,
       profile(profile: GithubProfile) {
         return {
           id: profile.id.toString(),
@@ -30,8 +31,8 @@ export const handler: NextAuthOptions = NextAuth({
         uid: token.sub,
       }
 
-      const encodedToken = jwt.sign(payload, process.env.JWT_SECRET!, {
-        algorithm: process.env.JWT_ALGORITHM as jwt.Algorithm,
+      const encodedToken = jwt.sign(payload, env.JWT_SECRET, {
+        algorithm: env.JWT_ALGORITHM as jwt.Algorithm,
         expiresIn: '24h',
       })
 
@@ -48,7 +49,7 @@ export const handler: NextAuthOptions = NextAuth({
     strategy: 'jwt',
     maxAge: 60 * 60 * 24, // 24 hours
   },
-  secret: process.env.NEXTAUTH_SECRET,
+  secret: env.NEXTAUTH_SECRET,
   pages: {
     signIn: '/auth/sign-in',
     error: '/auth/error',

src/env.ts

@@ -0,0 +1,40 @@
+import { createEnv } from '@t3-oss/env-nextjs'
+import { z } from 'zod'
+
+const nodeEnv = z.enum(['development', 'production', 'test'])
+
+function requiredOnEnv(env: z.infer<typeof nodeEnv>) {
+  return (value: any) => {
+    if (env === process.env.NODE_ENV && !value) {
+      return false
+    }
+
+    return true
+  }
+}
+
+export const env = createEnv({
+  server: {
+    DATABASE_URL: z.string().min(1).url(),
+    JWT_ALGORITHM: z.string().refine(requiredOnEnv('production')),
+    JWT_SECRET: z.string().refine(requiredOnEnv('production')),
+    NEXTAUTH_URL: z.string().optional().refine(requiredOnEnv('production')),
+    NEXTAUTH_SECRET: z.string().min(1),
+    GITHUB_ID: z.string().min(1),
+    GITHUB_SECRET: z.string().min(1),
+  },
+  client: {
+    NEXT_PUBLIC_VERCEL_URL: z.string().min(1).url(),
+  },
+  shared: {
+    NODE_ENV: nodeEnv,
+    VERCEL_ENV: z
+      .enum(['production', 'preview', 'development'])
+      .default('development'),
+  },
+  experimental__runtimeEnv: {
+    NEXT_PUBLIC_VERCEL_URL: process.env.NEXT_PUBLIC_VERCEL_URL,
+    NODE_ENV: process.env.NODE_ENV,
+    VERCEL_ENV: process.env.VERCEL_ENV,
+  },
+})

src/libs/axios.ts

@@ -0,0 +1,5 @@
+import axios from 'axios'
+
+export const api = axios.create({
+  baseURL: process.env.NEXT_PUBLIC_VERCEL_URL,
+})