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Measured entry

shadcn-block-calendar-14

calendarminimal-flat

A client-side React date picker that demonstrates a selected date alongside a run of booked, disabled days marked with a strike-through. It ships as a shadcn registry block and composes the shared Calendar and Button primitives, React DayPicker, date-fns, Lucide icons, Radix Slot, the cn utility, and Tailwind theme conventions.

Specimen
Harness screenshot of shadcn-block-calendar-14 at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-block-calendar-14 at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-block-calendar-14 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-calendar-14
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical0
Axe serious0
Axe moderate0
Axe minor0
Gzip marginal50.9 KB (116.3 KB build, 65.4 KB baseline)
Bare modeFAIL
Provider requiredNO
Demo usednone

What the harness recorded

BARE BUILD

✗ Build failed in 36.01s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/components/ui/calendar.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A focused, credible example with clean mounting, responsive behavior, and automated accessibility results in the prepared harness. Bare use fails because the shared cn utility is missing, so it needs a shadcn-style setup. The dependency cost is notable for a narrow date-picker example.

Use it if

  • You need a compact single-date picker that clearly marks booked days as unavailable.
  • Your app already uses shadcn primitives, Tailwind theme tokens, and the cn utility.
  • You want React DayPicker behavior with selection state kept in the surrounding component.

Skip it if

  • You need appointment times, recurring events, drag interactions, or a full scheduling workflow.
  • Your project does not use Tailwind or shadcn conventions and you do not want to recreate their utility and theme layer.
  • You need booked dates to remain selectable or to open availability details rather than act as disabled days.

Install

Installation record for shadcn-block-calendar-14
Declared dependenciesreact-day-picker@latest, date-fns, @radix-ui/react-slot
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, install React DayPicker, date-fns, Lucide React, and Radix Slot. Add compatible Calendar and Button primitives, a cn class-merging helper, Tailwind utilities and theme variables, then replace the registry aliases with local import paths. Render it in a client-capable React environment.

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
2026-08-14

Alternatives

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