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path: root/ui/lib/components/ActiveChannel.svelte
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<script>
	import { messages } from '$lib/store';
	import MessageRun from './MessageRun.svelte';

	export let channel = null;
	$: messageList = channel !== null ? $messages.inChannel(channel) : [];

	function* chunkBy(xs, fn) {
		let chunk;
		let key;
		for (let x of xs) {
			let newKey = fn(x);
			if (key !== newKey) {
				if (chunk !== undefined) {
					yield [key, chunk];
				}

				chunk = [x];
				key = newKey;
			} else {
				chunk.push(x);
			}
		}
		if (chunk !== undefined) {
			yield [key, chunk];
		}
	}
</script>

<div class="container">
	{#each chunkBy(messageList, (msg) => msg.sender) as [sender, messages]}
		<div>
			<MessageRun {sender} {messages} />
		</div>
	{/each}
</div>

<style>
	.container {
		overflow: auto;
	}
</style>