Device

A collection of functions, stores and actions to work with the user's device.

Media

createMatchMediaStore

A readable store which is true when the media query matches and false when it doesn't.

const reducedData = createMatchMediaStore('(prefers-reduced-data)');

$: if ($reducedData) {
	// ...
} else {
	// ...
}

isTouch

A readable store that returns whether the user is using a touch device.

reducedMotion

A readable store that returns whether the user has requested reduced motion.

runOnMatchMedia

A function that allows you to run a callback only when the media matches the specified condition ('matches' or 'doesNotMatch'). The callback can return a cleanup function that will be called when the media changes.

The media is determined by the MediaStore store (see createMatchMediaStore).

import { runOnMatchMedia, createMediaMediaStore } from '@288-toolkit/device/media';

// Run a callback only when the viewport size is below 800px
const destroy = runOnMatchMedia(createMediaMediaStore('(max-width: 800px)'), 'matches', () => {
	// do something
});

// Later, when you want to unsubscribe from the store and call the cleanup function if it exists
destroy();

runActionOnMatchMedia

Uses runOnMatchMedia to run a Svelte action only when the media matches the specified condition.

The action can be typed via generic params.

import { runActionOnMatchMedia, createMediaMediaStore } from '@288-toolkit/device/media';
import { scroll } from 'motion';

// Run a Svelte action only when the viewport size is below 1200px
const myAction = runActionOnMatchMedia<
	HTMLButtonElement,
	{
		test: string;
	},
	{ 'on:visible': (e: CustomEvent) => void }
>(createMediaMediaStore('(min-width: 1200px)'), 'doesNotMatch', (node, params) => {
	const unsubscribe = scroll(() => {
		// do something
	});
	return {
		destroy: () => {
			unsubscribe();
		},
		update: (params) => {
			// Code here will only be run when the params change and the viewport size is below 1200px
		}
	};
});

Window

createWindowEventStore

Create a readable store that listens to a window event. Using a store has the advantage of having multiple event handlers for the same event listener, which is good for memory management.

You can create a store for any window event. This package already exports the following:

• click
• clickUseCapture
• focus
• focusin
• keydown
• pointerdown
• resize
• scroll

currentScroll

A readable store that returns the current scroll positions of the user (x and y).