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Measured entry

kibo-gantt

calendarminimal-flatmotion on file

A client-side React Gantt toolkit shipped as a shadcn registry component, with composable timeline, sidebar, marker, and draggable task pieces. It relies on dnd-kit, date-fns, Jotai, usehooks, lodash.throttle, Lucide, shadcn Card and Context Menu primitives, and the shared cn utility.

Specimen
Motion capture of the mounted demo, recorded by the harness. No audio track.
Harness screenshot of kibo-gantt at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of kibo-gantt at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of kibo-gantt 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 kibo-gantt
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical1
Axe serious0
Axe moderate0
Axe minor0
Gzip marginal88.3 KB (153.7 KB build, 65.4 KB baseline)
Bare modeFAIL
Provider requiredNO
Demo usedwritten from the component source API

What the harness recorded

BARE BUILD

✗ Build failed in 57.49s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/cut/index.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A capable foundation for teams willing to own the scheduling behavior and accessibility pass. It builds and mounts in the prepared harness, but the unlabeled icon button is a release blocker. It needs a shadcn-style setup because the bare project cannot resolve its shared utility import.

Use it if

  • You need a project timeline with draggable tasks, resize handles, markers, and multiple calendar ranges.
  • Your product already uses shadcn conventions and can wire task data, move callbacks, and add-item behavior around composable primitives.
  • You want a timeline that stays contained at narrow and wide viewport sizes while supporting a sticky task sidebar.

Skip it if

  • You need an accessible release without first labeling the icon-only add control and auditing the drag interactions.
  • You want a small dependency footprint or do not want state, date, hook, drag-and-drop, icon, and throttle packages for one widget.
  • You need a drop-in chart with persistence, dependency links, critical paths, or scheduling rules already implemented.
  • Your app is not prepared to adopt shadcn aliases, theme tokens, and copied UI primitives.

Install

Installation record for kibo-gantt
Declared dependencies@dnd-kit/core, @dnd-kit/modifiers, @uidotdev/usehooks, date-fns, jotai, lodash.throttle, lucide-react, radix-ui
Missing on install@uidotdev/usehooks, lodash.throttle
Bare installfails once the shadcn-style helpers are removed, so it needs that setup
Providerno provider required in the harness

For a non-shadcn project, add the aliased shared cn utility, Card and Context Menu primitives, compatible theme tokens, and the registry's React dependencies. Configure the alias used by the imports, then give the icon-only add button an accessible name before shipping.

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/shadcnblocks/kibo
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.