Toast

Generates toast notifications.

'use client';
import * as React from 'react';
import { Toast } from '@base-ui-components/react/toast';
import styles from './index.module.css';

export default function ExampleToast() {
  return (
    <Toast.Provider>
      <ToastButton />
      <Toast.Portal>
        <Toast.Viewport className={styles.Viewport}>
          <ToastList />
        </Toast.Viewport>
      </Toast.Portal>
    </Toast.Provider>
  );
}

function ToastButton() {
  const toastManager = Toast.useToastManager();
  const [count, setCount] = React.useState(0);

  function createToast() {
    setCount((prev) => prev + 1);
    toastManager.add({
      title: `Toast ${count + 1} created`,
      description: 'This is a toast notification.',
    });
  }

  return (
    <button type="button" className={styles.Button} onClick={createToast}>
      Create toast
    </button>
  );
}

function ToastList() {
  const { toasts } = Toast.useToastManager();
  return toasts.map((toast) => (
    <Toast.Root key={toast.id} toast={toast} className={styles.Toast}>
      <Toast.Content className={styles.Content}>
        <Toast.Title className={styles.Title} />
        <Toast.Description className={styles.Description} />
        <Toast.Close className={styles.Close} aria-label="Close">
          <XIcon className={styles.Icon} />
        </Toast.Close>
      </Toast.Content>
    </Toast.Root>
  ));
}

function XIcon(props: React.ComponentProps<'svg'>) {
  return (
    <svg
      xmlns="http://www.w3.org/2000/svg"
      width="24"
      height="24"
      viewBox="0 0 24 24"
      fill="none"
      stroke="currentColor"
      strokeWidth="2"
      strokeLinecap="round"
      strokeLinejoin="round"
      {...props}
    >
      <path d="M18 6 6 18" />
      <path d="m6 6 12 12" />
    </svg>
  );
}

Anatomy

Import the component and assemble its parts:

Anatomy

import { Toast } from '@base-ui-components/react/toast';

<Toast.Provider>
  <Toast.Portal>
    <Toast.Viewport>
      {/* Stacked toasts */}
      <Toast.Root>
        <Toast.Content>
          <Toast.Title />
          <Toast.Description />
          <Toast.Action />
          <Toast.Close />
        </Toast.Content>
      </Toast.Root>

      {/* Anchored toasts */}
      <Toast.Positioner>
        <Toast.Root>
          <Toast.Arrow />
          <Toast.Content>
            <Toast.Title />
            <Toast.Description />
            <Toast.Action />
            <Toast.Close />
          </Toast.Content>
        </Toast.Root>
      </Toast.Positioner>
    </Toast.Viewport>
  </Toast.Portal>
</Toast.Provider>

API reference

Provider

Provides a context for creating and managing toasts.

limit

number

3

Name: limit
Description: The maximum number of toasts that can be displayed at once. When the limit is reached, the oldest toast will be removed to make room for the new one.
Type: number | undefined
Default: 3

toastManager

createToastManager.ToastManager

—

Name: toastManager
Description: A global manager for toasts to use outside of a React component.
Type: | { subscribe: ( listener: (data: ToastManagerEvent) => void, ) => () => void add: ( options: useToastManager.AddOptions<{}>, ) => string close: (id: string) => void update: ( id: string, updates: useToastManager.UpdateOptions<{}>, ) => void promise: ( promiseValue: Promise<Value>, options: useToastManager.PromiseOptions<Value, {}>, ) => Promise<Value> } | undefined

timeout

number

5000

Name: timeout
Description: The default amount of time (in ms) before a toast is auto dismissed. A value of 0 will prevent the toast from being dismissed automatically.
Type: number | undefined
Default: 5000

children

ReactNode

—

Name: children
Type: React.ReactNode

Viewport

A container viewport for toasts. Renders a <div> element.

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | (( state: Toast.Viewport.State, ) => CSSProperties | undefined) | undefined

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Viewport.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Viewport.State, ) => ReactElement)

data-expanded

Indicates toasts are expanded in the viewport.

Attribute	Description	-
`data-expanded`	Indicates toasts are expanded in the viewport.

--toast-frontmost-height

Indicates the height of the frontmost toast.

CSS Variable	Description	-
`--toast-frontmost-height`	Indicates the height of the frontmost toast.

Portal

A portal element that moves the viewport to a different part of the DOM. By default, the portal element is appended to <body>. Renders a <div> element.

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | ((state: any) => CSSProperties | undefined) | undefined

container

Union

—

Name: container
Description: A parent element to render the portal element into.
Type: | HTMLElement | ShadowRoot | React.RefObject<HTMLElement | ShadowRoot | null> | null | undefined

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: string | ((state: any) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | ((props: HTMLProps, state: any) => ReactElement)

Root

Groups all parts of an individual toast. Renders a <div> element.

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | ((state: Toast.Root.State) => CSSProperties | undefined) | undefined

swipeDirection

Union

['down', 'right']

Name: swipeDirection
Description: Direction(s) in which the toast can be swiped to dismiss.
Type: | 'left' | 'right' | 'up' | 'down' | ('left' | 'right' | 'up' | 'down')[] | undefined
Default: ['down', 'right']

toast^*

Toast.Root.ToastObject<any>

—

Name: toast
Description: The toast to render.
Type: id: string ref?: RefObject<HTMLElement | null> title?: ReactNode type?: string description?: ReactNode timeout?: number priority?: 'high' | 'low' transitionStatus?: 'starting' | 'ending' limited?: boolean height?: number onClose?: () => void onRemove?: () => void actionProps?: Omit< DetailedHTMLProps< ButtonHTMLAttributes<HTMLButtonElement>, HTMLButtonElement >, 'ref' > positionerProps?: Toast.Positioner.Options data?: any }

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Root.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Root.State, ) => ReactElement)

data-expanded

Present when the toast is expanded in the viewport.

data-limited

Present when the toast was removed due to exceeding the limit.

data-swipe-direction

The direction the toast was swiped.

data-swiping

Present when the toast is being swiped.

data-type

The type of the toast.

data-starting-style

Present when the toast is animating in.

data-ending-style

Present when the toast is animating out.

Attribute	Description	-
`data-expanded`	Present when the toast is expanded in the viewport.
`data-limited`	Present when the toast was removed due to exceeding the limit.
`data-swipe-direction`	The direction the toast was swiped.
`data-swiping`	Present when the toast is being swiped.
`data-type`	The type of the toast.
`data-starting-style`	Present when the toast is animating in.
`data-ending-style`	Present when the toast is animating out.

--toast-height

Indicates the measured natural height of the toast in pixels.

--toast-index

Indicates the index of the toast in the list.

--toast-offset-y

Indicates the vertical pixels offset of the toast in the list when expanded.

--toast-swipe-movement-x

Indicates the horizontal swipe movement of the toast.

--toast-swipe-movement-y

Indicates the vertical swipe movement of the toast.

CSS Variable	Description	-
`--toast-height`	Indicates the measured natural height of the toast in pixels.
`--toast-index`	Indicates the index of the toast in the list.
`--toast-offset-y`	Indicates the vertical pixels offset of the toast in the list when expanded.
`--toast-swipe-movement-x`	Indicates the horizontal swipe movement of the toast.
`--toast-swipe-movement-y`	Indicates the vertical swipe movement of the toast.

Content

A container for the contents of a toast. Renders a <div> element.

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | (( state: Toast.Content.State, ) => CSSProperties | undefined) | undefined

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Content.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Content.State, ) => ReactElement)

data-behind

Present when the toast is behind the frontmost toast in the stack.

data-expanded

Present when the toast viewport is expanded.

Attribute	Description	-
`data-behind`	Present when the toast is behind the frontmost toast in the stack.
`data-expanded`	Present when the toast viewport is expanded.

Title

A title that labels the toast. Renders an <h2> element.

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | ((state: Toast.Title.State) => CSSProperties | undefined) | undefined

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Title.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Title.State, ) => ReactElement)

data-type

The type of the toast.

Attribute	Description	-
`data-type`	The type of the toast.

Description

A description that describes the toast. Can be used as the default message for the toast when no title is provided. Renders a <p> element.

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | (( state: Toast.Description.State, ) => CSSProperties | undefined) | undefined

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Description.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Description.State, ) => ReactElement)

data-type

The type of the toast.

Attribute	Description	-
`data-type`	The type of the toast.

Action

Performs an action when clicked. Renders a <button> element.

nativeButton

boolean

true

Name: nativeButton
Description: Whether the component renders a native <button> element when replacing it via the render prop. Set to false if the rendered element is not a button (e.g. <div>).
Type: boolean | undefined
Default: true

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | ((state: Toast.Action.State) => CSSProperties | undefined) | undefined

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Action.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Action.State, ) => ReactElement)

data-type

The type of the toast.

Attribute	Description	-
`data-type`	The type of the toast.

Close

Closes the toast when clicked. Renders a <button> element.

nativeButton

boolean

true

Name: nativeButton
Description: Whether the component renders a native <button> element when replacing it via the render prop. Set to false if the rendered element is not a button (e.g. <div>).
Type: boolean | undefined
Default: true

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | ((state: Toast.Close.State) => CSSProperties | undefined) | undefined

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Close.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Close.State, ) => ReactElement)

data-type

The type of the toast.

Attribute	Description	-
`data-type`	The type of the toast.

Positioner

Positions the toast against the anchor. Renders a <div> element.

collisionAvoidance

CollisionAvoidance

—

Name: collisionAvoidance
Description: Determines how to handle collisions when positioning the popup.
Type: | { side?: 'none' | 'flip' align?: 'none' | 'flip' | 'shift' fallbackAxisSide?: 'none' | 'end' | 'start' } | { side?: 'none' | 'shift' align?: 'none' | 'shift' fallbackAxisSide?: 'none' | 'end' | 'start' } | undefined
Example: <Positioner collisionAvoidance={{ side: 'shift', align: 'shift', fallbackAxisSide: 'none', }} />

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | (( state: Toast.Positioner.State, ) => CSSProperties | undefined) | undefined

toast^*

ToastObject<any>

—

Name: toast
Description: The toast object associated with the positioner.
Type: id: string ref?: RefObject<HTMLElement | null> title?: ReactNode type?: string description?: ReactNode timeout?: number priority?: 'high' | 'low' transitionStatus?: 'starting' | 'ending' limited?: boolean height?: number onClose?: () => void onRemove?: () => void actionProps?: Omit< DetailedHTMLProps< ButtonHTMLAttributes<HTMLButtonElement>, HTMLButtonElement >, 'ref' > positionerProps?: Toast.Positioner.Options data?: any }

trigger

Element | null

—

Name: trigger
Description: The trigger element for the toast. Falls back to the anchor element when not provided.
Type: Element | null | undefined

align

Align

'center'

Name: align
Description: How to align the popup relative to the specified side.
Type: 'center' | 'end' | 'start' | undefined
Default: 'center'

alignOffset

number | OffsetFunction

0

Name: alignOffset
Description: Additional offset along the alignment axis in pixels. Also accepts a function that returns the offset to read the dimensions of the anchor and positioner elements, along with its side and alignment.

The function takes a data object parameter with the following properties:

data.anchor: the dimensions of the anchor element with properties width and height.

data.positioner: the dimensions of the positioner element with properties width and height.

data.side: which side of the anchor element the positioner is aligned against.

data.align: how the positioner is aligned relative to the specified side.
Type: | number | ((data: { side: Side align: Align anchor: { width: number; height: number } positioner: { width: number; height: number } }) => number) | undefined
Default: 0
Example: <Positioner alignOffset={({ side, align, anchor, positioner }) => { return side === 'top' || side === 'bottom' ? anchor.width : anchor.height; }} />

side

Side

'top'

Name: side
Description: Which side of the anchor element to align the toast against. May automatically change to avoid collisions.
Type: | 'left' | 'right' | 'bottom' | 'top' | 'inline-end' | 'inline-start' | undefined
Default: 'top'

sideOffset

number | OffsetFunction

0

Name: sideOffset
Description: Distance between the anchor and the popup in pixels. Also accepts a function that returns the distance to read the dimensions of the anchor and positioner elements, along with its side and alignment.

The function takes a data object parameter with the following properties:

data.anchor: the dimensions of the anchor element with properties width and height.

data.positioner: the dimensions of the positioner element with properties width and height.

data.side: which side of the anchor element the positioner is aligned against.

data.align: how the positioner is aligned relative to the specified side.
Type: | number | ((data: { side: Side align: Align anchor: { width: number; height: number } positioner: { width: number; height: number } }) => number) | undefined
Default: 0
Example: <Positioner sideOffset={({ side, align, anchor, positioner }) => { return side === 'top' || side === 'bottom' ? anchor.height : anchor.width; }} />

arrowPadding

number

5

Name: arrowPadding
Description: Minimum distance to maintain between the arrow and the edges of the popup.

Use it to prevent the arrow element from hanging out of the rounded corners of a popup.
Type: number | undefined
Default: 5

anchor

Element | null

—

Name: anchor
Description: An element to position the toast against.
Type: Element | null | undefined

collisionBoundary

Boundary

'clipping-ancestors'

Name: collisionBoundary
Description: An element or a rectangle that delimits the area that the popup is confined to.
Type: | Element | 'clipping-ancestors' | Element[] | Rect | undefined
Default: 'clipping-ancestors'

collisionPadding

Padding

5

Name: collisionPadding
Description: Additional space to maintain from the edge of the collision boundary.
Type: | { top?: number right?: number bottom?: number left?: number } | number | undefined
Default: 5

sticky

boolean

false

Name: sticky
Description: Whether to maintain the popup in the viewport after the anchor element was scrolled out of view.
Type: boolean | undefined
Default: false

positionMethod

'fixed' | 'absolute'

'absolute'

Name: positionMethod
Description: Determines which CSS position property to use.
Type: 'fixed' | 'absolute' | undefined
Default: 'absolute'

trackAnchor

boolean

true

Name: trackAnchor
Description: Whether the popup tracks any layout shift of its positioning anchor.
Type: boolean | undefined
Default: true

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Positioner.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Positioner.State, ) => ReactElement)

Arrow

Displays an element positioned against the toast anchor. Renders a <div> element.

style

React.CSSProperties | function

—

Name: style
Type: | React.CSSProperties | ((state: Toast.Arrow.State) => CSSProperties | undefined) | undefined

className

string | function

—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Toast.Arrow.State) => string | undefined)

render

ReactElement | function

—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Toast.Arrow.State, ) => ReactElement)

data-uncentered

Present when the toast arrow is uncentered.

data-anchor-hidden

Present when the anchor is hidden.

data-align

Indicates how the popup is aligned relative to specified side.

data-side

Indicates which side the popup is positioned relative to the anchor.

Attribute	Description	-
`data-uncentered`	Present when the toast arrow is uncentered.
`data-anchor-hidden`	Present when the anchor is hidden.
`data-align`	Indicates how the popup is aligned relative to specified side.
`data-side`	Indicates which side the popup is positioned relative to the anchor.

useToastManager

Manages toasts, called inside of a <Toast.Provider>.

Usage

const toastManager = Toast.useToastManager();

Return value

toasts

Toast.Root.ToastObject[]

—

Name: toasts
Description: The array of toast objects.
Type: Toast.Root.ToastObject[]

add

(options: useToast.AddOptions) => string

—

Name: add
Description: Add a toast to the toast list.
Type: (options: useToast.AddOptions) => string

close

(toastId: string) => void

—

Name: close
Description: Closes and removes a toast from the toast list.
Type: (toastId: string) => void

update

(toastId: string, options: useToast.UpdateOptions) => void

—

Name: update
Description: Update a toast in the toast list.
Type: (toastId: string, options: useToast.UpdateOptions) => void

promise

<Value>(promise: Promise<Value>, options: useToast.PromiseOptions) => Promise<Value>

—

Name: promise
Description: Create a toast that resolves with a value, with three possible states for the toast: loading, success, and error.
Type: <Value>(promise: Promise<Value>, options: useToast.PromiseOptions) => Promise<Value>

Method options

title

string

—

Name: title
Description: The title of the toast.
Type: string

description

string

—

Name: description
Description: The description of the toast.
Type: string

type

string

—

Name: type
Description: The type of the toast. Used to conditionally style the toast or render different elements.
Type: string

timeout

number

—

Name: timeout
Description: The amount of time (in ms) before the toast is auto dismissed.
Type: number

priority

'low' | 'high'

'low'

Name: priority
Description: The priority of the toast.

low - The toast will be announced politely.

high - The toast will be announced urgently.
Type: 'low' | 'high'
Default: 'low'

onClose

function

—

Name: onClose
Description: A callback invoked when the toast is closed.
Type: () => void

onRemove

function

—

Name: onRemove
Description: A callback invoked when the toast is removed from the list after animations complete when closed.
Type: () => void

actionProps

React.ComponentPropsWithRef<'button'>

—

Name: actionProps
Description: The props of the action button.
Type: React.ComponentPropsWithRef<'button'>

data

Record<string, unknown>

—

Name: data
Description: The data of the toast.
Type: Record<string, unknown>

`add` method

Creates a toast by adding it to the toast list.

Returns a toastId that can be used to update or close the toast later.

Usage

const toastId = toastManager.add({
  description: 'Hello, world!',
});

Example

function App() {
  const toastManager = Toast.useToastManager();
  return (
    <button
      type="button"
      onClick={() => {
        toastManager.add({
          description: 'Hello, world!',
        });
      }}
    >
      Add toast
    </button>
  );
}

For high priority toasts, the title and description strings are what are used to announce the toast to screen readers. Screen readers do not announce any extra content rendered inside <Toast.Root>, including the <Toast.Title> or <Toast.Description> components, unless they intentionally navigate to the toast viewport.

`update` method

Updates the toast with new options.

Usage

toastManager.update(toastId, {
  description: 'New description',
});

`close` method

Closes the toast, removing it from the toast list after any animations complete.

Usage

toastManager.close(toastId);

`promise` method

Creates an asynchronous toast with three possible states: loading, success, and error.

Description configuration

const promise = toastManager.promise(
  new Promise((resolve) => {
    setTimeout(() => resolve('world!'), 1000);
  }),
  {
    // Each are a shortcut for the `description` option
    loading: 'Loading...',
    success: (data) => `Hello ${data}`,
    error: (err) => `Error: ${err}`,
  },
);

Each state also accepts the method options object to granularly control the toast for each state:

Method options configuration

const promise = toastManager.promise(
  new Promise((resolve) => {
    setTimeout(() => resolve('world!'), 1000);
  }),
  {
    loading: {
      title: 'Loading...',
      description: 'The promise is loading.',
    },
    success: {
      title: 'Success',
      description: 'The promise resolved successfully.',
    },
    error: {
      title: 'Error',
      description: 'The promise rejected.',
      actionProps: {
        children: 'Contact support',
        onClick() {
          // Redirect to support page
        },
      },
    },
  },
);

General usage

<Toast.Provider> can be wrapped around your entire app, ensuring all toasts are rendered in the same viewport.
F6 lets users jump into the toast viewport landmark region to navigate toasts with keyboard focus.

Global manager

A global toast manager can be created by passing the toastManager prop to the <Toast.Provider>. This enables you to queue a toast from anywhere in the app (such as in functions outside the React tree) while still using the same toast renderer.

The created toastManager object has the same properties and methods as the Toast.useToastManager() hook.

Creating a manager instance

const toastManager = Toast.createToastManager();

Using the instance

<Toast.Provider toastManager={toastManager}>

Stacking and animations

The --toast-index CSS variable can be used to determine the stacking order of the toasts. The 0th index toast appears at the front.

z-index stacking

.Toast {
  z-index: calc(1000 - var(--toast-index));
  transform: scale(1 - calc(0.1 * var(--toast-index)));
}

The --toast-offset-y CSS variable can be used to determine the vertical offset of the toasts when positioned absolutely with a translation offset — this is usually used with the data-expanded attribute, present when the toast viewport is being hovered or has focus.

Expanded offset

.Toast[data-expanded] {
  transform: translateY(var(--toast-offset-y));
}

<Toast.Content> is used to hide overflow from taller toasts while the stack is collapsed. The data-behind attribute marks content that sits behind the frontmost toast and pairs with the data-expanded attribute so the content fades back in when the viewport expands:

Collapsed content

.ToastContent {
  overflow: hidden;
  transition: opacity 0.25s;
}

.ToastContent[data-behind] {
  opacity: 0;
}

.ToastContent[data-expanded] {
  opacity: 1;
}

The --toast-swipe-movement-x and --toast-swipe-movement-y CSS variables are used to determine the swipe movement of the toasts in order to add a translation offset.

Swipe offset

.Toast {
  transform: scale(1 - calc(0.1 * var(--toast-index))) + translateX(var(--toast-swipe-movement-x)) +
    translateY(calc(var(--toast-swipe-movement-y) + (var(--toast-index) * -20%)));
}

The data-swipe-direction attribute can be used to determine the swipe direction of the toasts to add a translation offset upon dismissal.

Swipe direction

&[data-ending-style] {
  opacity: 0;

  &[data-swipe-direction='up'] {
    transform: translateY(calc(var(--toast-swipe-movement-y) - 150%));
  }
  &[data-swipe-direction='down'] {
    transform: translateY(calc(var(--toast-swipe-movement-y) + 150%));
  }
  &[data-swipe-direction='left'] {
    transform: translateX(calc(var(--toast-swipe-movement-x) - 150%)) translateY(var(--offset-y));
  }
  &[data-swipe-direction='right'] {
    transform: translateX(calc(var(--toast-swipe-movement-x) + 150%)) translateY(var(--offset-y));
  }
}

The data-limited attribute indicates that the toast was removed from the list due to exceeding the limit option. This is useful for animating the toast differently when it is removed from the list.

Examples

Anchored toasts

Toasts can be anchored to a specific element using <Toast.Positioner> and the positionerProps option when adding a toast. This is useful for showing contextual feedback like transient “Copied” toasts that appear near the button that triggered the action.

Anchored toasts should be rendered in a separate <Toast.Provider> from stacked toasts. A global toast manager can be created for each to manage them separately throughout your app:

Mixing stacked and anchored toasts

const anchoredToastManager = Toast.createToastManager();
const stackedToastManager = Toast.createToastManager();

function App() {
  return (
    <React.Fragment>
      <Toast.Provider toastManager={anchoredToastManager}>
        <AnchoredToasts />
      </Toast.Provider>
      <Toast.Provider toastManager={stackedToastManager}>
        <StackedToasts />
      </Toast.Provider>

      {/* App content */}
    </React.Fragment>
  );
}

function AnchoredToasts() {
  const { toasts } = Toast.useToastManager();
  return (
    <Toast.Portal>
      <Toast.Viewport>
        {toasts.map((toast) => (
          <Toast.Positioner key={toast.id} toast={toast}>
            <Toast.Root toast={toast}>{/* ... */}</Toast.Root>
          </Toast.Positioner>
        ))}
      </Toast.Viewport>
    </Toast.Portal>
  );
}

function StackedToasts() {
  const { toasts } = Toast.useToastManager();
  return (
    <Toast.Portal>
      <Toast.Viewport>
        {toasts.map((toast) => (
          <Toast.Root key={toast.id} toast={toast}>
            {/* ... */}
          </Toast.Root>
        ))}
      </Toast.Viewport>
    </Toast.Portal>
  );
}

Custom position

The position of the toasts is controlled by your own CSS. To change the toasts’ position, you can modify the .Viewport and .Root styles. A more general component could accept a data-position attribute, which the CSS handles for each variation. The following shows a top-center position:

Undo action

When adding a toast, the actionProps option can be used to define props for an action button inside of it—this enables the ability to undo an action associated with the toast.

Promise

An asynchronous toast can be created with three possible states: loading, success, and error. The type string matches these states to change the styling. Each of the states also accepts the method options object for more granular control.

Custom

A toast with custom data can be created by passing any typed object interface to the data option. This enables you to pass any data (including functions) you need to the toast and access it in the toast’s rendering logic.

Varying heights

Toasts with varying heights are stacked by ensuring that the <Toast.Content> element has overflow: hidden set, along with all toasts’ heights matching the frontmost toast at index 0. This prevents taller toasts from overflowing the stack when collapsed.