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svelte/site/content/tutorial/15-context/01-context-api/app-b/Map.svelte

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<script>
import { onMount, setContext } from 'svelte';
import { mapbox, key } from './mapbox.js';
setContext(key, {
getMap: () => map
});
export let lat;
export let lon;
export let zoom;
let container;
let map;
onMount(() => {
const link = document.createElement('link');
link.rel = 'stylesheet';
link.href = 'https://unpkg.com/mapbox-gl/dist/mapbox-gl.css';
link.onload = () => {
map = new mapbox.Map({
container,
style: 'mapbox://styles/mapbox/streets-v9',
center: [lon, lat],
zoom
});
};
document.head.appendChild(link);
return () => {
map.remove();
link.parentNode.removeChild(link);
};
});
</script>
<style>
div {
width: 100%;
height: 100%;
}
</style>
<div bind:this={container}>
{#if map}
<slot></slot>
{/if}
</div>