Getting started

sheet-view is a headless bottom-sheet / modal built on the native <dialog> element and CSS scroll-snap. The core is framework-agnostic; a thin React adapter ships at sheet-view/react.

Install

npm i sheet-view

Styles

Positioning and the scroll-snap container need real CSS to work, so the styles come in two parts — a small required structural sheet and an optional default skin:

import 'sheet-view/base.css' // REQUIRED — structure + motion (layout, scroll-snap, animations)
import 'sheet-view/theme.css' // OPTIONAL — the default skin (colours, radius, shadow)

• base.css is deliberately unlayered so its gesture-critical rules can't be overridden by a stray utility class. It also owns the motion: the entrance is a mechanism, not a skin, so a themeless sheet still slides in — retune it with motion tokens.
• theme.css is wrapped in @layer sheet-view so your own styles always win.
• sheet-view/styles.css imports both in one line.

Next.js Pages Router: global CSS may only be imported from pages/_app.js. The App Router allows importing it anywhere.

The two layers

sheet-view exports the engine: createSheetCore() for your own instance, plus a shared sheetCore singleton. sheet-view/react wraps that engine in a facade that widens slots to ReactNode — sheets is ready to use over the shared core, and createSheets(core?) builds your own.

Import	From	What it is
createSheetCore(options?)	sheet-view	the engine — your own instance, with options
sheetCore	sheet-view	the shared engine singleton
sheets	sheet-view/react	ready-made facade over sheetCore
createSheets(core?)	sheet-view/react	your own facade (an isolated sheet stack)
<SheetHost instance={…}/>	sheet-view/react	renders a facade's sheets; omit instance for the default sheets
<SheetPortal/>	sheet-view/react	mounts popovers (dropdowns, toasts) in the right layer
useSheetLayout()	sheet-view/react	this sheet's card / scrollers / layers / motion phase
useSheetPortalTarget()	sheet-view/react	the node to portal into — never null
installDialogShim()	sheet-view/testing	makes <dialog> work under jsdom, for tests

Vanilla

import {createSheetCore} from 'sheet-view'

const sheets = createSheetCore()

sheets.open({
  title: 'Hello',
  content: () => {
    const p = document.createElement('p')
    p.textContent = 'Drag me down, press Escape, or click the backdrop.'
    return p
  },
})

open() returns a handle: {id, close, update, slots}. Slots accept a DOM node, a string, or a factory (ctx) => node receiving {close, update}.

React

Mount <SheetHost/> once near the root, then drive it imperatively:

import {SheetHost, sheets} from 'sheet-view/react'
import 'sheet-view/styles.css'

export function App() {
  return (
    <>
      <button onClick={() => sheets.open({title: 'Hello', content: <p>Hi there</p>})}>
        Open
      </button>
      <SheetHost />
    </>
  )
}

All six slots — headerSlot, icon, closeIcon, content, footer, overlaySlot — widen to ReactNode. Everything else (title, size, closeLabel, …) is the same as the vanilla core.

Isolated instances

The default sheets facade is enough for most apps. Create your own when you need custom timings or a different breakpoint, or to isolate a micro-frontend: createSheets takes a core you build with createSheetCore, and <SheetHost instance={…}/> renders it:

import {createSheetCore} from 'sheet-view'
import {createSheets, SheetHost} from 'sheet-view/react'

const mySheets = createSheets(createSheetCore({closeMs: 400, breakpoint: 640}))

function App() {
  return (
    <>
      <YourApp />
      <SheetHost instance={mySheets} />
    </>
  )
}

// open from anywhere, against your own stack:
mySheets.open({title: 'Filters', content: <Filters />})

Next: Theming · API reference · Live demos.