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feat(auth): support custom providers via custom: prefix in Provider type#2134

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mandarini merged 2 commits intomasterfrom
cemal/feat-support-custom-providers-as-param
Feb 24, 2026
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feat(auth): support custom providers via custom: prefix in Provider type#2134
mandarini merged 2 commits intomasterfrom
cemal/feat-support-custom-providers-as-param

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@cemalkilic cemalkilic commented Feb 24, 2026

Add custom:${string} template literal to the Provider type union and SignInWithIdTokenCredentials.provider, allowing custom OIDC providers (e.g. custom:my-company) to be passed to signInWithOAuth, signInWithIdToken, and linkIdentity.

No runtime changes needed as the provider string is passed directly to the server.

@cemalkilic cemalkilic requested review from a team as code owners February 24, 2026 09:01
@github-actions github-actions bot added the auth-js Related to the auth-js library. label Feb 24, 2026
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Reviewing files that changed from the base of the PR and between a808c54 and 8eadc27.

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  • packages/core/auth-js/src/lib/types.ts
  • packages/core/auth-js/test/GoTrueClient.test.ts
📝 Walkthrough

Summary by CodeRabbit

Release Notes

  • New Features

    • Added support for custom OIDC providers using the custom: prefix convention for sign-in flows.
    • Custom providers now integrate seamlessly with OAuth and ID token authentication methods.

  • Tests

    • Expanded test coverage to validate custom OIDC provider behavior across OAuth sign-in and ID token sign-in scenarios.

Walkthrough

The changes extend the authentication type system to support custom OIDC providers through a template-literal naming convention. The Provider type now accepts provider names matching the pattern custom:${string}, and the SignInWithIdTokenCredentials type is updated to accommodate this new provider format. Corresponding test cases are added to verify OAuth sign-in flows and ID token sign-in behavior with custom OIDC providers, ensuring the type system changes are properly covered by the test suite.

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commit: 8eadc27

@mandarini mandarini merged commit 4b00d5d into master Feb 24, 2026
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@mandarini mandarini deleted the cemal/feat-support-custom-providers-as-param branch February 24, 2026 12:35
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@grdsdev grdsdev grdsdev approved these changes

@mandarini mandarini mandarini approved these changes

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@cemalkilic @grdsdev @mandarini