A spinner that stops guessing the moment the total arrives — at the top of its own turn, so nothing jumps.
The prompt12,506 characters
Add the "Spinner" component from notboring to my project.
It is licensed for use in my projects — notboring.dev/license. Please:
1. Create the component at a sensible path for this
project, named Spinner, from the source below.
2. Install what it needs: npm i framer-motion lucide-react
3. Add the CSS to the project's stylesheet.
4. THE PART THAT NEEDS YOUR JUDGMENT. The CSS reads
these custom properties and does not define them:
--card
--font-ui
--ink
--ink-4
--ink-rgb
They are notboring's design tokens. Map each one to
whatever this project already uses for the same
job — its own ink, ground, surface and UI font —
rather than defining them as new globals. If the
project has no equivalent, define it locally on
the component's own root so nothing leaks out.
Anything ending -rgb wants three bare numbers,
because the CSS builds rgba() from it.
5. IF YOU CHANGE IT, GO ALL THE WAY. This block is
built for every state its object can really be
in — empty, one, full, refused, undone, pressed
twice, interrupted halfway — and not only the one
the demo opens on. Adapt it and the same standard
holds: work out that list before you write, and
build the whole of it. Never settle for the
minimum that makes the screenshot right. A
component somebody has to come back and finish is
the thing this was written to replace.
Keep the comments. They say why the numbers are what
they are, and they are most of what makes this worth
copying rather than rewriting.
--- Spinner.tsx ---
import { useEffect, useRef, useState } from "react";
import { AnimatePresence, motion } from "framer-motion";
import { Check } from "lucide-react";
/* ══ Spinner ══════════════════════════════════════════════
A spinner is what you draw when you do not know the total.
The moment you are told it, the ring stops guessing and
becomes the number.
THE TWO ARE ONE OBJECT. Every product has both — a spinner
while the request is out, a progress ring once the response
has a Content-Length — and in almost all of them they are
two components, so the switch is a blink: the spinner
disappears and a ring at 0% appears in its place. They are
the same ring here. The quarter-arc that was going round
while nothing was known is the arc that keeps going, and
the first thing the total tells us is how far along that
quarter actually was.
AND IT HANDS OVER AT TWELVE O'CLOCK. The guess turns once
every 900ms; the total is taken at the end of a whole
number of turns, so the arc is at the top of the dial on the
frame it stops being a guess. The turn is a CSS animation
composing on top of the ring's own -90° — after two full
The rest — the source and its comments — is what the plan opens.