4 replies

Unable to use endpoints in custom plugin

Hi,

I'm developing multiple plugins for my project called Cosmos and have encountered an issue. When I implement custom endpoints in a plugin, they aren't accessible through either the auth.api or authClient interfaces. I reviewed the documentation and examined the built-in plugins within better-auth, but I haven't been able to determine if I'm missing something or if there's an actual issue with Better Auth itself.

To isolate the problem, I've created a minimal test project using only Drizzle with PGLite and Hono running on Bun. Additionally, I experienced a related issue when attempting to implement the example birthday plugin from the documentation, the type wasn't properly recognized by the authClient's signUp function. As a workaround, I added the birthday field to inferAdditionalFields.

  // doesn't work at all
  // authClient.createInvitation();
  // works but there is no type
  // auth.api.createInvitation();

  // doesn't work at all
  // authClient.createInvitation();
  // works but there is no type
  // auth.api.createInvitation();

For reference:
Test project: https://github.com/Creaous/better-auth-custom-plugin-issue
Cosmos: https://github.com/Nexirift/cosmos

GitHub

GitHub - Creaous/better-auth-custom-plugin-issue

Contribute to Creaous/better-auth-custom-plugin-issue development by creating an account on GitHub.

GitHub

GitHub - Nexirift/cosmos: Cosmos, the authentication server for Nex...

Cosmos, the authentication server for Nexirift. Contribute to Nexirift/cosmos development by creating an account on GitHub.

Solution

don't cast type like you're doing here

export const invitation = (): BetterAuthPlugin => {}

export const invitation = (): BetterAuthPlugin => {}

use satisfies instead

export const invitation = () => {
  return {

  } satisfies BetterAuthPlugin
}

export const invitation = () => {
  return {

  } satisfies BetterAuthPlugin
}

Jump to solution

Unable to use endpoints in custom plugin

  // doesn't work at all
  // authClient.createInvitation();
  // works but there is no type
  // auth.api.createInvitation();

  // doesn't work at all
  // authClient.createInvitation();
  // works but there is no type
  // auth.api.createInvitation();

For reference:
Test project: https://github.com/Creaous/better-auth-custom-plugin-issue
Cosmos: https://github.com/Nexirift/cosmos

GitHub

GitHub - Creaous/better-auth-custom-plugin-issue

Contribute to Creaous/better-auth-custom-plugin-issue development by creating an account on GitHub.

GitHub

GitHub - Nexirift/cosmos: Cosmos, the authentication server for Nex...

Cosmos, the authentication server for Nexirift. Contribute to Nexirift/cosmos development by creating an account on GitHub.

Solution

don't cast type like you're doing here

export const invitation = (): BetterAuthPlugin => {}

export const invitation = (): BetterAuthPlugin => {}

use satisfies instead

export const invitation = () => {
  return {

  } satisfies BetterAuthPlugin
}

export const invitation = () => {
  return {

  } satisfies BetterAuthPlugin
}

Jump to solution

Unable to use endpoints in custom plugin

Unable to use endpoints in custom plugin

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