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docs: add SSR & Hydration guide for data-cy-bootstrap feature#6359

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marcagba wants to merge 1 commit intocypress-io:mainfrom
prosehair:docs/ssr-hydration-bootstrap-injection
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docs: add SSR & Hydration guide for data-cy-bootstrap feature#6359
marcagba wants to merge 1 commit intocypress-io:mainfrom
prosehair:docs/ssr-hydration-bootstrap-injection

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@marcagba
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Summary

Adds documentation for the data-cy-bootstrap marker feature that fixes React 18 hydration errors in SSR applications.

Related to: cypress-io/cypress#33295

Changes

  • New guide: docs/app/guides/ssr-hydration.mdx - Comprehensive guide covering:
    • Why hydration errors occur with Cypress
    • How to use the data-cy-bootstrap marker
    • Framework-specific implementations (Next.js App Router, React Router 7)
    • Troubleshooting common hydration errors
  • Changelog: Added 15.10.0 release entry for the feature

Preview

The guide will be available at /app/guides/ssr-hydration

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🔨 Latest commit 9c76a5e

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CLAassistant commented Jan 27, 2026

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All committers have signed the CLA.

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3 participants