feat: nextjs 16, better-auth 1.4, prisma v7

.changeset/clear-rice-judge.md

@@ -0,0 +1,5 @@
+---
+"create-t3-app": minor
+---
+
+feat prisma v7

.changeset/config.json

@@ -12,4 +12,4 @@
   "updateInternalDependencies": "patch",
   "ignore": ["@ct3a/www"],
   "changedFilePatterns": ["src/**", "template/**"]
-}
+}

.changeset/good-sites-stick.md

@@ -0,0 +1,5 @@
+---
+"create-t3-app": minor
+---
+
+feat: better-auth 1.4

.changeset/young-donuts-laugh.md

@@ -0,0 +1,5 @@
+---
+"create-t3-app": minor
+---
+
+feat: Next.js v16

cli/CHANGELOG.md

@@ -316,7 +316,6 @@
   This release adds a new option to use [`drizzle-orm`](https://orm.drizzle.team/docs/overview) as an alternative to Prisma.
 
   To make the different ORM options as similar as possible, some minor changes has also been made to the Prisma installer:
-
   - a new script `db:push` has been added and is included in both ORM options.
   - the prisma client has been renamed to `db` in the trpc context - you now access your database client like
     ```ts

cli/package.json

@@ -66,35 +66,35 @@
     "@auth/prisma-adapter": "^1.6.0",
     "@libsql/client": "^0.14.0",
     "@planetscale/database": "^1.19.0",
-    "@prisma/adapter-planetscale": "^6.6.0",
-    "@prisma/client": "^6.6.0",
-    "@t3-oss/env-nextjs": "^0.12.0",
-    "@tailwindcss/postcss": "^4.0.15",
+    "@prisma/adapter-planetscale": "^7.0.1",
+    "@prisma/client": "^7.0.1",
+    "@t3-oss/env-nextjs": "^0.13.8",
+    "@tailwindcss/postcss": "^4.1.16",
     "@tanstack/react-query": "^5.69.0",
     "@trpc/client": "11.0.0",
     "@trpc/next": "11.0.0",
     "@trpc/react-query": "11.0.0",
     "@trpc/server": "11.0.0",
     "@types/fs-extra": "^11.0.4",
     "@types/gradient-string": "^1.1.6",
-    "@types/node": "^24.10.1",
-    "better-auth": "^1.3",
+    "@types/node": "^22.19.1",
+    "better-auth": "^1.4.0",
     "drizzle-kit": "^0.30.5",
     "drizzle-orm": "^0.41.0",
     "mysql2": "^3.11.0",
-    "next": "^15.5.6",
-    "next-auth": "^4.24.7",
+    "next": "^16.0.7",
+    "next-auth": "^4.24.13",
     "postgres": "^3.4.4",
     "prettier": "^3.5.3",
     "prettier-plugin-tailwindcss": "^0.6.11",
-    "prisma": "^6.6.0",
-    "react": "^19.1.2",
-    "react-dom": "^19.1.2",
+    "prisma": "^7.0.1",
+    "react": "^19.2.1",
+    "react-dom": "^19.2.1",
     "superjson": "^2.2.1",
-    "tailwindcss": "^4.0.15",
+    "tailwindcss": "^4.1.16",
     "tsup": "^6.7.0",
     "type-fest": "^3.13.1",
     "typescript": "^5.8.2",
-    "zod": "^3.24.2"
+    "zod": "^4.1.12"
   }
 }

cli/src/helpers/createProject.ts

@@ -64,8 +64,8 @@ export const createProject = async ({
   if (appRouter) {
     // Replace next.config
     fs.copyFileSync(
-      path.join(PKG_ROOT, "template/extras/config/next-config-appdir.js"),
-      path.join(projectDir, "next.config.js")
+      path.join(PKG_ROOT, "template/extras/config/next-config-appdir.ts"),
+      path.join(projectDir, "next.config.ts")
     );
 
     selectLayoutFile({ projectDir, packages });

cli/src/index.ts

@@ -87,7 +87,10 @@ const main = async () => {
 
     if (usePackages.prisma.inUse) {
       logger.info("Generating Prisma client...");
-      await execa("npx", ["prisma", "generate"], { cwd: projectDir });
+      await execa(pkgManager, ["run", "with-env", "prisma", "generate"], {
+        cwd: projectDir,
+        env: { SKIP_ENV_VALIDATION: "1" },
+      });
       logger.info("Successfully generated Prisma client!");
     }
 

cli/src/installers/dependencyVersionMap.ts

@@ -9,12 +9,21 @@ export const dependencyVersionMap = {
   "@auth/drizzle-adapter": "^1.7.2",
 
   // Better-Auth
-  "better-auth": "^1.3",
+  "better-auth": "^1.4.0",
 
   // Prisma
-  prisma: "^6.6.0",
-  "@prisma/client": "^6.6.0",
-  "@prisma/adapter-planetscale": "^6.6.0",
+  prisma: "^7.0.1",
+  "@prisma/client": "^7.0.1",
+  "@prisma/adapter-planetscale": "^7.0.1",
+  "@prisma/adapter-pg": "^7.0.1",
+  "@prisma/adapter-mariadb": "^7.0.1",
+  "@prisma/adapter-better-sqlite3": "^7.0.1",
+  "better-sqlite3": "12.5.0",
+  pg: "^8.13.1",
+  "@types/pg": "^8.11.10",
+  "@types/better-sqlite3": "^7.6.11",
+  "@types/node": "^22.19.1",
+  "dotenv-cli": "^8.0.0",
 
   // Drizzle
   "drizzle-kit": "^0.30.5",
@@ -25,9 +34,8 @@ export const dependencyVersionMap = {
   "@libsql/client": "^0.14.0",
 
   // TailwindCSS
-  tailwindcss: "^4.0.15",
-  postcss: "^8.5.3",
-  "@tailwindcss/postcss": "^4.0.15",
+  tailwindcss: "^4.1.16",
+  "@tailwindcss/postcss": "^4.1.16",
 
   // tRPC
   "@trpc/client": "^11.0.0",
@@ -46,7 +54,7 @@ export const dependencyVersionMap = {
   "@eslint/eslintrc": "^3.3.1",
   "prettier-plugin-tailwindcss": "^0.6.11",
   eslint: "^9.23.0",
-  "eslint-config-next": "^15.2.3",
+  "eslint-config-next": "^16.0.0",
   "eslint-plugin-drizzle": "^0.2.3",
   "typescript-eslint": "^8.27.0",
 } as const;

cli/src/installers/envVars.ts

@@ -50,7 +50,7 @@ export const envVariablesInstaller: Installer = ({
       "template/extras/src/env",
       envFile
     );
-    const envSchemaDest = path.join(projectDir, "src/env.js");
+    const envSchemaDest = path.join(projectDir, "src/env.ts");
     fs.copyFileSync(envSchemaSrc, envSchemaDest);
   }
 
@@ -86,7 +86,7 @@ const getEnvContent = (
   scopedAppName: string
 ) => {
   let content = `
-# When adding additional environment variables, the schema in "/src/env.js"
+# When adding additional environment variables, the schema in "/src/env.ts"
 # should be updated accordingly.
 `
     .trim()
@@ -103,6 +103,10 @@ AUTH_SECRET=""
 # Next Auth Discord Provider
 AUTH_DISCORD_ID=""
 AUTH_DISCORD_SECRET=""
+
+# Production App URL in case its custom (see react.tsx / api.ts) 
+APP_URL="http://localhost:3000"
+
 `;
 
   if (usingBetterAuth)
@@ -114,6 +118,8 @@ BETTER_AUTH_SECRET=""
 # Better Auth GitHub OAuth
 BETTER_AUTH_GITHUB_CLIENT_ID=""
 BETTER_AUTH_GITHUB_CLIENT_SECRET=""
+BETTER_AUTH_URL="http://localhost:3000" # Production App URL in case its custom (see react.tsx / api.ts)
+
 `;
 
   if (usingPrisma)

cli/src/installers/eslint.ts

@@ -53,9 +53,9 @@ export const dynamicEslintInstaller: Installer = ({ projectDir, packages }) => {
   addPackageScript({
     projectDir,
     scripts: {
-      lint: "next lint",
-      "lint:fix": "next lint --fix",
-      check: "next lint && tsc --noEmit",
+      lint: "eslint .",
+      "lint:fix": "eslint --fix .",
+      check: "eslint . && tsc --noEmit",
       "format:write": 'prettier --write "**/*.{ts,tsx,js,jsx,mdx}" --cache',
       "format:check": 'prettier --check "**/*.{ts,tsx,js,jsx,mdx}" --cache',
     },

cli/src/installers/prisma.ts

@@ -2,15 +2,47 @@ import path from "path";
 import fs from "fs-extra";
 
 import { PKG_ROOT } from "~/consts.js";
-import { type Installer } from "~/installers/index.js";
+import { type AvailableDependencies } from "~/installers/dependencyVersionMap.js";
+import { type DatabaseProvider, type Installer } from "~/installers/index.js";
 import { addPackageDependency } from "~/utils/addPackageDependency.js";
 import { addPackageScript } from "~/utils/addPackageScript.js";
 
+// Provider-specific dependency map
+interface ProviderDependencies {
+  adapter: AvailableDependencies;
+  driver?: AvailableDependencies;
+  types: AvailableDependencies[];
+}
+
+const providerDependencyMap: Record<DatabaseProvider, ProviderDependencies> = {
+  postgres: {
+    adapter: "@prisma/adapter-pg",
+    driver: "pg",
+    types: ["@types/pg"],
+  },
+  mysql: {
+    adapter: "@prisma/adapter-mariadb",
+    types: ["@types/node"],
+  },
+  sqlite: {
+    adapter: "@prisma/adapter-better-sqlite3",
+    driver: "better-sqlite3",
+    types: ["@types/better-sqlite3"],
+  },
+  planetscale: {
+    adapter: "@prisma/adapter-planetscale",
+    driver: "@planetscale/database",
+    types: ["@types/node"],
+  },
+};
+
 export const prismaInstaller: Installer = ({
   projectDir,
   packages,
+  pkgManager,
   databaseProvider,
 }) => {
+  // Install base Prisma v7 packages
   addPackageDependency({
     projectDir,
     dependencies: ["prisma"],
@@ -21,15 +53,47 @@ export const prismaInstaller: Installer = ({
     dependencies: ["@prisma/client"],
     devMode: false,
   });
-  if (databaseProvider === "planetscale")
+
+  // Install dotenv-cli as dev dependency
+  addPackageDependency({
+    projectDir,
+    dependencies: ["dotenv-cli"],
+    devMode: true,
+  });
+
+  // Get provider-specific dependencies
+  const providerDeps = providerDependencyMap[databaseProvider];
+
+  // Install provider-specific adapter package
+  addPackageDependency({
+    projectDir,
+    dependencies: [providerDeps.adapter],
+    devMode: false,
+  });
+
+  // Install provider-specific driver package (if required)
+  if (providerDeps.driver) {
     addPackageDependency({
       projectDir,
-      dependencies: ["@prisma/adapter-planetscale", "@planetscale/database"],
+      dependencies: [providerDeps.driver],
       devMode: false,
     });
+  }
+
+  // Install provider-specific TypeScript types
+  addPackageDependency({
+    projectDir,
+    dependencies: providerDeps.types,
+    devMode: true,
+  });
 
   const extrasDir = path.join(PKG_ROOT, "template/extras");
 
+  // Copy universal prisma.config.ts to project root
+  const prismaConfigSrc = path.join(extrasDir, "config/prisma.config.ts");
+  const prismaConfigDest = path.join(projectDir, "prisma.config.ts");
+  fs.copySync(prismaConfigSrc, prismaConfigDest);
+
   const schemaBaseName = packages?.betterAuth.inUse
     ? "with-better-auth"
     : packages?.nextAuth.inUse
@@ -62,22 +126,26 @@ export const prismaInstaller: Installer = ({
   fs.mkdirSync(path.dirname(schemaDest), { recursive: true });
   fs.writeFileSync(schemaDest, schemaText);
 
-  const clientSrc = path.join(
-    extrasDir,
-    databaseProvider === "planetscale"
-      ? "src/server/db/db-prisma-planetscale.ts"
-      : "src/server/db/db-prisma.ts"
-  );
+  // Select and copy correct db client template based on provider
+  const dbClientTemplateMap: Record<DatabaseProvider, string> = {
+    postgres: "src/server/db/db-prisma-postgres.ts",
+    mysql: "src/server/db/db-prisma-mysql.ts",
+    sqlite: "src/server/db/db-prisma-sqlite.ts",
+    planetscale: "src/server/db/db-prisma-planetscale.ts",
+  };
+
+  const clientSrc = path.join(extrasDir, dbClientTemplateMap[databaseProvider]);
   const clientDest = path.join(projectDir, "src/server/db.ts");
 
   addPackageScript({
     projectDir,
     scripts: {
-      postinstall: "prisma generate",
-      "db:push": "prisma db push",
-      "db:studio": "prisma studio",
-      "db:generate": "prisma migrate dev",
-      "db:migrate": "prisma migrate deploy",
+      "with-env": "dotenv -e .env --",
+      postinstall: `${pkgManager} run with-env prisma generate`,
+      "db:push": `${pkgManager} run with-env prisma db push`,
+      "db:studio": `${pkgManager} run with-env prisma studio`,
+      "db:generate": `${pkgManager} run with-env prisma migrate dev`,
+      "db:migrate": `${pkgManager} run with-env prisma migrate deploy`,
     },
   });
 

cli/src/installers/tailwind.ts

@@ -8,7 +8,7 @@ import { addPackageDependency } from "~/utils/addPackageDependency.js";
 export const tailwindInstaller: Installer = ({ projectDir }) => {
   addPackageDependency({
     projectDir,
-    dependencies: ["tailwindcss", "postcss", "@tailwindcss/postcss"],
+    dependencies: ["tailwindcss", "@tailwindcss/postcss"],
     devMode: true,
   });
 

cli/src/installers/trpc.ts

@@ -129,6 +129,18 @@ export const trpcInstaller: Installer = ({
   }
 
   copySrcDest.forEach(([src, dest]) => {
-    fs.copySync(src, dest);
+    if (
+      usingBetterAuth &&
+      (src.endsWith("utils/api.ts") || src.endsWith("trpc/react.tsx"))
+    ) {
+      const content = fs.readFileSync(src, "utf-8");
+      const newContent = content.replace(
+        /process\.env\.APP_URL/g,
+        "process.env.BETTER_AUTH_URL"
+      );
+      fs.outputFileSync(dest, newContent);
+    } else {
+      fs.copySync(src, dest);
+    }
   });
 };

cli/template/base/next.config.js → cli/template/base/next.config.ts

@@ -2,10 +2,11 @@
  * Run `build` or `dev` with `SKIP_ENV_VALIDATION` to skip env validation. This is especially useful
  * for Docker builds.
  */
-import "./src/env.js";
+import { type NextConfig } from "next";
 
-/** @type {import("next").NextConfig} */
-const config = {
+import "./src/env";
+
+const config: NextConfig = {
   reactStrictMode: true,
 
   /**