vibecodng.com

Free MCP betaIndex and tools live

Measured entry

shadcn-block-sidebar-06

sidebarminimal-flat

A documentation-style application shell with a collapsible sidebar, dropdown submenus, breadcrumb header, content placeholders, and a newsletter card. It ships as a shadcn registry block and composes sidebar, dropdown, breadcrumb, separator, card, button, and input primitives, with Radix UI, class-variance-authority, Lucide React, shared utilities, and theme tokens underneath.

Specimen
Harness screenshot of shadcn-block-sidebar-06 at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-block-sidebar-06 at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-block-sidebar-06 at 1440 pixels wide
Harness screenshot at 1440 pixels wide. No horizontal overflow recorded.

Measured

Every value below was written by the harness on the run that produced the frames above. None of it is derived from the prose.

Harness measurements recorded for shadcn-block-sidebar-06
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical0
Axe serious0
Axe moderate2
Axe minor0
Gzip marginal66.7 KB (132.1 KB build, 65.4 KB baseline)
Bare modeFAIL
Provider requiredNO
Demo usednone

What the harness recorded

BARE BUILD

✗ Build failed in 27.33s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/components/ui/separator.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A solid starting shell for documentation-heavy products, with responsive behavior and clean runtime results in the configured harness. It needs a shadcn-style setup and does not mount bare. Fix the nested duplicate main landmark and replace the placeholder links and form behavior before shipping.

Use it if

  • You need a documentation or dashboard shell whose top-level sections open into dropdown navigation.
  • Your app already uses shadcn conventions, path aliases, theme tokens, and the shared sidebar primitives.
  • You want a responsive sidebar that becomes mobile-aware without adding a separate navigation implementation.

Skip it if

  • You need inline expandable navigation instead of menus that open beside or below the sidebar.
  • You want a small standalone menu without importing the broader shadcn sidebar and primitive stack.
  • Your page already owns its main landmark and you cannot revise the block's landmark nesting before release.
  • You do not want a promotional form embedded in the navigation footer.

Install

Installation record for shadcn-block-sidebar-06
Declared dependenciesradix-ui, class-variance-authority, lucide-react
Missing on installnone
Bare installfails once the shadcn-style helpers are removed, so it needs that setup
Providerno provider required in the harness

In a non-shadcn project, add Radix UI, class-variance-authority, and Lucide React; copy the sidebar, dropdown menu, breadcrumb, separator, card, button, and input primitives; provide the shared class-name utility, import aliases, Tailwind setup, sidebar theme tokens, and any responsive sidebar hooks those primitives use. Wire real routes and the newsletter submission handler.

Source and credit

This page is a review, not a copy. The component source lives with its author and this site does not republish it. Read the license before you use anything.

Author repository

github.com/shadcn-ui/ui
License
MIT
Record published
2026-08-13

Alternatives

Other published entries for the sidebar pattern, ordered by what they measured: mounts first, then clean axe scans, then bare-mode passes, then the smaller bundle.