fix: useBlocker does not work with memoryHistory

[brenelz]

Used Opus to generate a fix for this. Seems reasonable

Fixes #6393

Summary by CodeRabbit

• New Features

  • Navigation blocking support added to memory history, enabling control over navigation with new management capabilities.

• Tests

  • Added tests validating navigation blocking behavior.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

📝 Walkthrough

Walkthrough

The changes add an internal blockers array to memory history alongside public getBlockers() and setBlockers() methods. Tests verify that blockers prevent navigation when returning true and allow it when returning false.

Changes

Cohort / File(s)	Summary
Blocker API Implementation packages/history/src/index.ts	Added internal blockers state array with private accessors _getBlockers() and _setBlockers(), exposing public getBlockers() and setBlockers() methods on the memory history object to manage navigation blockers.
Blocker API Tests packages/history/tests/createMemoryHistory.test.ts	Added three test cases covering blocker lifecycle: blocking navigation when blocker returns true, allowing navigation when it returns false, and removing blockers via unblock functionality.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix(router-core): useBlocker navigation issues for 404 pages and external URLs #4917 — Implements router-core consumption of the blocker getter/setter API added to memory history during navigation operations.

Poem

🐰 A blocker wall now guards the memory's door,
With getters and setters to block and restore,
useBlocker can flourish where once it would fail,
Memory history now has a navigation trail! 🛣️

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding blocker functionality to memory history to fix the useBlocker bug.
Linked Issues check	✅ Passed	The changes implement blockers API (getBlockers/setBlockers) on memory history, directly addressing the root cause preventing useBlocker from working with memoryHistory.
Out of Scope Changes check	✅ Passed	All changes are scoped to adding blocker management and tests for memory history; no unrelated modifications detected.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 077ec29

Command	Status	Duration	Result
nx affected --targets=test:eslint,test:unit,tes...	✅ Succeeded	14m 11s	View ↗
nx run-many --target=build --exclude=examples/*...	✅ Succeeded	1m 38s	View ↗

---

☁️ Nx Cloud last updated this comment at 2026-01-17 19:20:36 UTC

[pkg-pr-new]

More templates

• tanstack-router-vue-example-basic-jsx
• tanstack-router-vue-example-basic-file-based-jsx
• tanstack-router-vue-example-basic-file-based-sfc
• tanstack-router-solid-example-authenticated-routes
• tanstack-router-solid-example-authenticated-routes-firebase
• tanstack-router-solid-example-basic
• tanstack-router-solid-example-basic-default-search-params
• tanstack-router-solid-example-basic-devtools-panel
• tanstack-router-solid-example-basic-file-based
• tanstack-router-solid-example-basic-non-nested-devtools
• tanstack-router-solid-example-basic-solid-query
• tanstack-router-solid-example-basic-solid-query-file-based
• tanstack-router-solid-example-basic-ssr-file-based
• tanstack-router-solid-example-basic-ssr-streaming-file-based
• tanstack-router-solid-example-basic-virtual-file-based
• tanstack-router-solid-example-basic-virtual-inside-file-based
• tanstack-router-solid-example-deferred-data
• tanstack-router-solid-i18n-paraglide
• tanstack-router-solid-example-kitchen-sink
• tanstack-router-solid-example-kitchen-sink-file-based
• tanstack-router-solid-example-kitchen-sink-solid-query
• tanstack-router-solid-example-kitchen-sink-solid-query-file-based
• tanstack-router-solid-example-large-file-based
• tanstack-router-solid-example-location-masking
• tanstack-router-solid-example-navigation-blocking
• tanstack-router-solid-example-quickstart
• tanstack-router-solid-example-quickstart-esbuild-file-based
• tanstack-router-solid-example-quickstart-file-based
• tanstack-router-solid-example-quickstart-rspack-file-based
• tanstack-router-solid-example-quickstart-webpack-file-based
• @tanstack/router-solid-mono-simple
• router-solid-mono-simple-lazy
• router-solid-monorepo-solid-query
• tanstack-router-solid-example-scroll-restoration
• tanstack-solid-router-search-validator-adapters
• tanstack-solid-start-example-basic
• tanstack-solid-start-example-basic-auth
• tanstack-solid-start-example-basic-authjs
• tanstack-solid-start-example-basic-cloudflare
• tanstack-solid-start-example-basic-netlify
• tanstack-solid-start-example-basic-nitro
• tanstack-start-example-basic-solid-query
• tanstack-solid-start-example-basic-static
• tanstack-solid-start-bun-hosting
• tanstack-solid-start-example-convex-better-auth
• tanstack-solid-start-example-counter
• tanstack-solid-start-i18n-paraglide
• tanstack-solid-start-example-large
• tanstack-solid-start-streaming-data-from-server-functions
• tanstack-solid-start-example-supabase-basic
• tanstack-solid-start-tailwind-v4
• tanstack-router-solid-example-view-transitions
• tanstack-router-solid-example-with-framer-motion
• tanstack-router-solid-example-with-trpc
• tanstack-router-react-example-authenticated-routes
• tanstack-router-react-example-authenticated-routes-firebase
• tanstack-router-react-example-basic
• tanstack-router-react-example-basic-default-search-params
• tanstack-router-react-example-basic-devtools-panel
• tanstack-router-react-example-basic-file-based
• tanstack-router-react-example-basic-non-nested-devtools
• tanstack-router-react-example-react-query
• tanstack-router-react-example-basic-react-query-file-based
• tanstack-router-react-example-basic-ssr-file-based
• tanstack-router-react-example-basic-ssr-streaming-file-based
• tanstack-router-react-example-basic-virtual-file-based
• tanstack-router-react-example-basic-virtual-inside-file-based
• tanstack-router-react-example-deferred-data
• tanstack-router-i18n-paraglide
• tanstack-router-react-example-kitchen-sink
• tanstack-router-react-example-kitchen-sink-file-based
• tanstack-router-react-example-kitchen-sink-react-query
• tanstack-router-react-example-kitchen-sink-react-query-file-based
• tanstack-router-react-example-large-file-based
• tanstack-router-react-example-location-masking
• tanstack-router-react-example-navigation-blocking
• tanstack-router-react-example-quickstart
• tanstack-router-react-example-quickstart-esbuild-file-based
• tanstack-router-react-example-quickstart-file-based
• tanstack-router-react-example-quickstart-rspack-file-based
• tanstack-router-react-example-quickstart-webpack-file-based
• router-monorepo-react-query
• router-mono-simple
• router-mono-simple-lazy
• tanstack-router-react-example-scroll-restoration
• tanstack-search-validator-adapters
• tanstack-start-example-bare
• tanstack-start-example-basic
• tanstack-start-example-basic-auth
• tanstack-router-react-example-basic-authjs
• tanstack-start-example-basic-cloudflare
• tanstack-start-example-basic-react-query
• tanstack-start-example-basic-rsc
• tanstack-start-example-basic-static
• tanstack-start-bun-hosting
• tanstack-start-example-clerk-basic
• tanstack-start-example-convex-trellaux
• tanstack-start-example-counter
• tanstack-start-i18n-paraglide
• tanstack-start-example-large
• tanstack-start-example-material-ui
• tanstack-start-streaming-data-from-server-functions
• tanstack-start-example-supabase-basic
• tanstack-start-tailwind-v4
• tanstack-start-example-trellaux
• tanstack-start-example-workos
• tanstack-router-react-example-view-transitions
• tanstack-router-react-example-with-framer-motion
• tanstack-router-react-example-with-trpc
• tanstack-router-react-example-with-trpc-react-query

@tanstack/arktype-adapter

npm i https://pkg.pr.new/TanStack/router/@tanstack/arktype-adapter@6406

@tanstack/eslint-plugin-router

npm i https://pkg.pr.new/TanStack/router/@tanstack/eslint-plugin-router@6406

@tanstack/history

npm i https://pkg.pr.new/TanStack/router/@tanstack/history@6406

@tanstack/nitro-v2-vite-plugin

npm i https://pkg.pr.new/TanStack/router/@tanstack/nitro-v2-vite-plugin@6406

@tanstack/react-router

npm i https://pkg.pr.new/TanStack/router/@tanstack/react-router@6406

@tanstack/react-router-devtools

npm i https://pkg.pr.new/TanStack/router/@tanstack/react-router-devtools@6406

@tanstack/react-router-ssr-query

npm i https://pkg.pr.new/TanStack/router/@tanstack/react-router-ssr-query@6406

@tanstack/react-start

npm i https://pkg.pr.new/TanStack/router/@tanstack/react-start@6406

@tanstack/react-start-client

npm i https://pkg.pr.new/TanStack/router/@tanstack/react-start-client@6406

@tanstack/react-start-server

npm i https://pkg.pr.new/TanStack/router/@tanstack/react-start-server@6406

@tanstack/router-cli

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-cli@6406

@tanstack/router-core

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-core@6406

@tanstack/router-devtools

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-devtools@6406

@tanstack/router-devtools-core

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-devtools-core@6406

@tanstack/router-generator

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-generator@6406

@tanstack/router-plugin

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-plugin@6406

@tanstack/router-ssr-query-core

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-ssr-query-core@6406

@tanstack/router-utils

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-utils@6406

@tanstack/router-vite-plugin

npm i https://pkg.pr.new/TanStack/router/@tanstack/router-vite-plugin@6406

@tanstack/solid-router

npm i https://pkg.pr.new/TanStack/router/@tanstack/solid-router@6406

@tanstack/solid-router-devtools

npm i https://pkg.pr.new/TanStack/router/@tanstack/solid-router-devtools@6406

@tanstack/solid-router-ssr-query

npm i https://pkg.pr.new/TanStack/router/@tanstack/solid-router-ssr-query@6406

@tanstack/solid-start

npm i https://pkg.pr.new/TanStack/router/@tanstack/solid-start@6406

@tanstack/solid-start-client

npm i https://pkg.pr.new/TanStack/router/@tanstack/solid-start-client@6406

@tanstack/solid-start-server

npm i https://pkg.pr.new/TanStack/router/@tanstack/solid-start-server@6406

@tanstack/start-client-core

npm i https://pkg.pr.new/TanStack/router/@tanstack/start-client-core@6406

@tanstack/start-fn-stubs

npm i https://pkg.pr.new/TanStack/router/@tanstack/start-fn-stubs@6406

@tanstack/start-plugin-core

npm i https://pkg.pr.new/TanStack/router/@tanstack/start-plugin-core@6406

@tanstack/start-server-core

npm i https://pkg.pr.new/TanStack/router/@tanstack/start-server-core@6406

@tanstack/start-static-server-functions

npm i https://pkg.pr.new/TanStack/router/@tanstack/start-static-server-functions@6406

@tanstack/start-storage-context

npm i https://pkg.pr.new/TanStack/router/@tanstack/start-storage-context@6406

@tanstack/valibot-adapter

npm i https://pkg.pr.new/TanStack/router/@tanstack/valibot-adapter@6406

@tanstack/virtual-file-routes

npm i https://pkg.pr.new/TanStack/router/@tanstack/virtual-file-routes@6406

@tanstack/vue-router

npm i https://pkg.pr.new/TanStack/router/@tanstack/vue-router@6406

@tanstack/vue-router-devtools

npm i https://pkg.pr.new/TanStack/router/@tanstack/vue-router-devtools@6406

@tanstack/vue-router-ssr-query

npm i https://pkg.pr.new/TanStack/router/@tanstack/vue-router-ssr-query@6406

@tanstack/vue-start

npm i https://pkg.pr.new/TanStack/router/@tanstack/vue-start@6406

@tanstack/vue-start-client

npm i https://pkg.pr.new/TanStack/router/@tanstack/vue-start-client@6406

@tanstack/vue-start-server

npm i https://pkg.pr.new/TanStack/router/@tanstack/vue-start-server@6406

@tanstack/zod-adapter

npm i https://pkg.pr.new/TanStack/router/@tanstack/zod-adapter@6406

commit: 077ec29