Svelte Macy

A Svelte Masonry component which wraps macy.js

Installation

1npm install svelte-macy

Usage

1<script>
2	import Macy from 'svelte-macy'; // default export
3	import { Macy } from 'svelte-macy'; // named export
4</script>
5
6<Macy>
7	<div>Child 1</div>
8	<div>Child 2</div>
9	<div>Child 3</div>
10	<div>Child 4</div>
11</Macy>

For a basic usage example, checkout the Svelte REPL demo here

Props

options

Since this component is a simple wrapper for macy.js, the options are close to identical (options.container has been handled by the component so it is not exposed).

Here is a list of supported options along with their default values

1{
2    columns: 4,
3    trueOrder: false,
4    margin: 0,
5    waitForImages: false,
6    useOwnImageLoader: false,
7    mobileFirst: false,
8    breakAt: undefined,
9    cancelLegacy: false,
10    useContainerForBreakpoints: false,
11}

You can find the full documentation for these options here

macy

You can use the macy prop to gain access to the underlying macy instance and its methods.

Using Svelte's bind directive

1<script>
2	let macy;
3
4	function someFunction() {
5		if (macy) {
6			macy.recalculate();
7		}
8	}
9</script>
10
11<Macy bind:macy="{macy}">
12	<div />
13</Macy>

Available methods are recalculate, runOnImageLoad, remove, reInit, on, emit. Full documentation can be found here

macy.js also provides some constants that are used with its events system, namely on and emit. These are re-exported for convenience.

1<script>
2	import { EVENTS } from 'svelte-macy';
3</script>

Typescript

Typescript is supported out of the box.

For the component, simply import as you would normally. This will provide typings for the component's props.

1<script lang="ts">
2	import { Macy } from 'svelte-macy';
3</script>

To import type definitions

1<script lang="ts">
2	import type { MacyInit, MacyInstance, MacyOptions, MacyEvents } from 'svelte-macy';
3</script>

Component Type

1// top level import
2import type { Macy } from 'svelte-macy';
3import type Macy from 'svelte-macy';
4
5let MacyComponentType: typeof Macy;
6
7// type import
8let MacyComponentType: typeof import('svelte-macy').default;
9let MacyComponentType: typeof import('svelte-macy').Macy;

SvelteKit/ SSR

Unfortunately the macy.js dependency relies on window/ document which is not available on the server. A workaround is to only import this component on the client.

1<script>
2	import { onMount } from "svelte";
3
4	let MacyComponent: typeof import("svelte-macy").Macy;
5
6	onMount(async () => {
7	  MacyComponent = (await import("svelte-macy")).Macy // or .default;
8	});
9
10	let macy;
11</script>
12
13<svelte:component this="{MacyComponent}" bind:macy options="{{}}">
14	<div />
15</svelte:component>

License

MIT