Better Auth•4mo ago

Next.js build failing

app/api/auth/[...all]/route.ts
Type error: Route "app/api/auth/[...all]/route.ts" has an invalid export:
  "unknown" is not a valid GET return type:
    Expected "void | Response | Promise<void | Response>", got "unknown".

Next.js build worker exited with code: 1 and signal: null

app/api/auth/[...all]/route.ts
Type error: Route "app/api/auth/[...all]/route.ts" has an invalid export:
  "unknown" is not a valid GET return type:
    Expected "void | Response | Promise<void | Response>", got "unknown".

Next.js build worker exited with code: 1 and signal: null

import { auth } from "@/lib/auth/server";
import { toNextJsHandler } from "better-auth/next-js";

export const { GET, POST } = toNextJsHandler(auth);

import { auth } from "@/lib/auth/server";
import { toNextJsHandler } from "better-auth/next-js";

export const { GET, POST } = toNextJsHandler(auth);

Does anyone know what this may be or how to fix it?

Solution:

This ended up being I just needed to delete my node_modules

Jump to solution

9 Replies

nikatune•4mo ago

which version? next js and better auth

SNiKerDoDleOP•4mo ago

15.3.5 nextjs and better auth 1.2.12 I'm on the path of a change someone made to the better-auth config unnecessarily, but open to ideas if you have any... didn't appear to be the case on what I thought it may be @nikatune

nikatune•4mo ago

can you send your auth config?

SNiKerDoDleOP•4mo ago

export const auth = betterAuth({
  database: prismaAdapter(prisma, {
    provider: "mysql",
  }),
  secret: process.env.BETTER_AUTH_SECRET || "fallback-secret-for-development",
  baseURL: process.env.NEXT_PUBLIC_APP_URL || "http://localhost:3000",
  emailAndPassword: {
    enabled: true,
    async sendResetPassword(data, request) {
      // Send password reset email using our email service
      try {
        const resetUrl = `${process.env.NEXT_PUBLIC_APP_URL}/reset-password?token=${data.token}`;

        const result = await emailService.sendPasswordResetEmail(
...
        );

        if (!result.success) {
          console.error("Failed to send password reset email:", result.error);
          throw new Error("Failed to send password reset email");
        }

        console.log(
          "Password reset email sent successfully:",
          result.messageId
        );
      } catch (error) {
        console.error("Error sending password reset email:", error);
        throw error;
      }
    },
  },
  plugins: [
    customSession(async ({ user, session }) => {
      type RoleType = keyof typeof roles;
      return {
        user: {
          ...user,
          role: (user as any).role as RoleType,
        },
        session,
      };
    }),
    magicLink({
      sendMagicLink: async ({ email, url }) => {
        const result = await emailService.sendMagicLinkEmail(
          { email },
          {
            magicLink: url,
            appName: process.env.NEXT_PUBLIC_APP_NAME || "Your App",
            appUrl: process.env.NEXT_PUBLIC_APP_URL || "https://yourapp.com",
          }
        );
        if (!result.success) {
          console.error("Failed to send magic link email:", result.error);
          throw new Error("Failed to send magic link email");
        }
      },
    }),
    admin({
      ac,
      roles,
    }),
    nextCookies(),
  ],
});

export const auth = betterAuth({
  database: prismaAdapter(prisma, {
    provider: "mysql",
  }),
  secret: process.env.BETTER_AUTH_SECRET || "fallback-secret-for-development",
  baseURL: process.env.NEXT_PUBLIC_APP_URL || "http://localhost:3000",
  emailAndPassword: {
    enabled: true,
    async sendResetPassword(data, request) {
      // Send password reset email using our email service
      try {
        const resetUrl = `${process.env.NEXT_PUBLIC_APP_URL}/reset-password?token=${data.token}`;

        const result = await emailService.sendPasswordResetEmail(
...
        );

        if (!result.success) {
          console.error("Failed to send password reset email:", result.error);
          throw new Error("Failed to send password reset email");
        }

        console.log(
          "Password reset email sent successfully:",
          result.messageId
        );
      } catch (error) {
        console.error("Error sending password reset email:", error);
        throw error;
      }
    },
  },
  plugins: [
    customSession(async ({ user, session }) => {
      type RoleType = keyof typeof roles;
      return {
        user: {
          ...user,
          role: (user as any).role as RoleType,
        },
        session,
      };
    }),
    magicLink({
      sendMagicLink: async ({ email, url }) => {
        const result = await emailService.sendMagicLinkEmail(
          { email },
          {
            magicLink: url,
            appName: process.env.NEXT_PUBLIC_APP_NAME || "Your App",
            appUrl: process.env.NEXT_PUBLIC_APP_URL || "https://yourapp.com",
          }
        );
        if (!result.success) {
          console.error("Failed to send magic link email:", result.error);
          throw new Error("Failed to send magic link email");
        }
      },
    }),
    admin({
      ac,
      roles,
    }),
    nextCookies(),
  ],
});

I had to remove imports and the sendPaswordResetEmail to fit it here, but I don't think they would be a factor here

nikatune•4mo ago

can you update to better-auth v.13

SNiKerDoDleOP•4mo ago

Just tried, doesn't seem to fix. Should I update next as well?

nikatune•4mo ago

maybe its because of customSession plugin can you remove it and try to build ?

SNiKerDoDleOP•4mo ago

doesn't seem to fix it. I'm removing pieces of the config to try just random things now barebones seemingly isn't working either though leaving only password in it and the prisma adaptor thing

Solution

SNiKerDoDle•4mo ago

This ended up being I just needed to delete my node_modules

Gaming

Programming

Next.js build failing

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