fix(internal): 🐛 Split environment variable validation into those required for DB and the rest

drizzle.config.ts

@@ -1,7 +1,7 @@
 import { type Config } from "drizzle-kit";
 import "dotenv/config";
 
-import { env } from "~/env";
+import { dbEnv as env } from "~/db-env";
 
 export default {
   schema: "./src/server/db/schema.ts",

src/db-env.js

@@ -0,0 +1,64 @@
+import { createEnv } from "@t3-oss/env-nextjs";
+import { z } from "zod";
+/**
+ * @import { type ZodType } from "zod"
+ */
+
+/**
+ * @template {ZodType} T
+ * @param {T} validator
+ */
+export function optionalInDev(validator) {
+  return process.env.NODE_ENV === "production"
+    ? validator
+    : validator.optional();
+}
+
+export const dbEnv = createEnv({
+  /**
+   * Specify your server-side environment variables schema here. This way you can ensure the app
+   * isn't built with invalid env vars.
+   */
+  server: {
+    DATABASE_URL: z.string().url(),
+    TURSO_AUTH_TOKEN: optionalInDev(z.string()),
+    TURSO_ORG_SLUG: optionalInDev(z.string()),
+    NODE_ENV: z
+      .enum(["development", "test", "production"])
+      .default("development"),
+    VERCEL_GIT_COMMIT_REF: z.string().optional(),
+    VERCEL_GIT_PULL_REQUEST_ID: z.coerce.number().int().optional(),
+  },
+
+  /**
+   * Specify your client-side environment variables schema here. This way you can ensure the app
+   * isn't built with invalid env vars. To expose them to the client, prefix them with
+   * `NEXT_PUBLIC_`.
+   */
+  client: {
+    // NEXT_PUBLIC_CLIENTVAR: z.string(),
+  },
+
+  /**
+   * You can't destruct `process.env` as a regular object in the Next.js edge runtimes (e.g.
+   * middlewares) or client-side so we need to destruct manually.
+   */
+  runtimeEnv: {
+    DATABASE_URL: process.env.DATABASE_URL,
+    TURSO_AUTH_TOKEN: process.env.TURSO_AUTH_TOKEN,
+    TURSO_ORG_SLUG: process.env.TURSO_ORG_SLUG,
+    NODE_ENV: process.env.NODE_ENV,
+    VERCEL_GIT_COMMIT_REF: process.env.VERCEL_GIT_COMMIT_REF,
+    VERCEL_GIT_PULL_REQUEST_ID: process.env.VERCEL_GIT_PULL_REQUEST_ID,
+  },
+  /**
+   * Run `build` or `dev` with `SKIP_ENV_VALIDATION` to skip env validation. This is especially
+   * useful for Docker builds.
+   */
+  skipValidation: !!process.env.SKIP_ENV_VALIDATION,
+  /**
+   * Makes it so that empty strings are treated as undefined. `SOME_VAR: z.string()` and
+   * `SOME_VAR=''` will throw an error.
+   */
+  emptyStringAsUndefined: true,
+});

src/env.js

@@ -1,31 +1,13 @@
 import { createEnv } from "@t3-oss/env-nextjs";
 import { z } from "zod";
-/**
- * @import { type ZodType } from "zod"
- */
+import { dbEnv, optionalInDev } from "./db-env.js";
 
-/**
- * @template {ZodType} T
- * @param {T} validator
- */
-function optionalInDev(validator) {
-  return process.env.NODE_ENV === "production"
-    ? validator
-    : validator.optional();
-}
-
-export const env = createEnv({
+export const authEnv = createEnv({
   /**
    * Specify your server-side environment variables schema here. This way you can ensure the app
    * isn't built with invalid env vars.
    */
   server: {
-    DATABASE_URL: z.string().url(),
-    TURSO_AUTH_TOKEN: optionalInDev(z.string()),
-    TURSO_ORG_SLUG: optionalInDev(z.string()),
-    NODE_ENV: z
-      .enum(["development", "test", "production"])
-      .default("development"),
     NEXTAUTH_SECRET: optionalInDev(z.string()),
     NEXTAUTH_URL: z.preprocess(
       // This makes Vercel deployments not fail if you don't set NEXTAUTH_URL
@@ -36,8 +18,6 @@ export const env = createEnv({
     ),
     DISCORD_CLIENT_ID: optionalInDev(z.string()),
     DISCORD_CLIENT_SECRET: optionalInDev(z.string()),
-    VERCEL_GIT_COMMIT_REF: z.string().optional(),
-    VERCEL_GIT_PULL_REQUEST_ID: z.coerce.number().int().optional(),
   },
 
   /**
@@ -54,16 +34,10 @@ export const env = createEnv({
    * middlewares) or client-side so we need to destruct manually.
    */
   runtimeEnv: {
-    DATABASE_URL: process.env.DATABASE_URL,
-    TURSO_AUTH_TOKEN: process.env.TURSO_AUTH_TOKEN,
-    TURSO_ORG_SLUG: process.env.TURSO_ORG_SLUG,
-    NODE_ENV: process.env.NODE_ENV,
     NEXTAUTH_SECRET: process.env.NEXTAUTH_SECRET,
     NEXTAUTH_URL: process.env.NEXTAUTH_URL,
     DISCORD_CLIENT_ID: process.env.DISCORD_CLIENT_ID,
     DISCORD_CLIENT_SECRET: process.env.DISCORD_CLIENT_SECRET,
-    VERCEL_GIT_COMMIT_REF: process.env.VERCEL_GIT_COMMIT_REF,
-    VERCEL_GIT_PULL_REQUEST_ID: process.env.VERCEL_GIT_PULL_REQUEST_ID,
   },
   /**
    * Run `build` or `dev` with `SKIP_ENV_VALIDATION` to skip env validation. This is especially
@@ -76,3 +50,5 @@ export const env = createEnv({
    */
   emptyStringAsUndefined: true,
 });
+
+export const env = { ...dbEnv, ...authEnv };