feat(clerk-js,shared): Add support for email code MFA to SignInFuture

[dstaley]

Description

Adds support for email code MFA to SignInFuture. We already had phone_code, but were missing email_code.

Checklist

• pnpm test runs as expected.
• pnpm build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

Summary by CodeRabbit

• New Features

  • Email code-based multi-factor authentication (MFA) for sign-in: users can request and verify codes sent to their email as a second factor.

• Tests

  • Added coverage for the email-code MFA flow, including success and missing-factor error cases.

• Chores

  • Added changeset documenting minor version bumps and the new email-code MFA note.

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[changeset-bot]

🦋 Changeset detected

Latest commit: d467a8b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 20 packages

Name	Type
@clerk/clerk-js	Minor
@clerk/react	Minor
@clerk/shared	Minor
@clerk/chrome-extension	Patch
@clerk/expo	Patch
@clerk/nextjs	Patch
@clerk/react-router	Patch
@clerk/tanstack-react-start	Patch
@clerk/agent-toolkit	Patch
@clerk/astro	Patch
@clerk/backend	Patch
@clerk/expo-passkeys	Patch
@clerk/express	Patch
@clerk/fastify	Patch
@clerk/localizations	Patch
@clerk/msw	Patch
@clerk/nuxt	Patch
@clerk/testing	Patch
@clerk/ui	Patch
@clerk/vue	Patch

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Project	Deployment	Review	Updated (UTC)
clerk-js-sandbox	Ready	Preview, Comment	Jan 13, 2026 10:04pm

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request adds email-code MFA support to SignInFuture and a changeset. It adds sendMFAEmailCode() to prepare an email_code second factor and verifyMFAEmailCode(params) to attempt verification, and exposes them on SignInFuture.mfa as sendEmailCode and verifyEmailCode. A new type SignInFutureMFAEmailCodeVerifyParams (code: string) is introduced in shared types. Tests covering the send-email-code flow and factor-not-found error handling were added.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly and accurately describes the main change: adding email code MFA support to SignInFuture across clerk-js and shared packages.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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• .changeset/gold-seals-sort.md
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🔇 Additional comments (2)

packages/react/src/stateProxy.ts (1)

175-182: LGTM!

The additions correctly follow the established pattern for exposing MFA methods via wrapMethods. The method names align with the underlying SignInFuture.mfa implementation.

.changeset/gold-seals-sort.md (1)

1-7: LGTM!

Changeset correctly documents the minor version bump for the email code MFA feature across the affected packages.

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commit: d467a8b

[jacekradko]

Minor suggestion: Consider adding tests for sendMFAEmailCode and verifyMFAEmailCode to match the existing sendMFAPhoneCode test coverage in SignIn.test.ts.

[jacekradko]

Looks good. Perhaps enhance test coverage