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hotomoe/src/misc/extract-custom-emojis-from-mfm.ts

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import * as mfm from 'mfm-js';
import { unique } from '@/prelude/array';
export function extractCustomEmojisFromMfm(nodes: mfm.MfmNode[]): string[] {
const emojiNodes = [] as mfm.MfmEmojiCode[];
function scan(nodes: mfm.MfmNode[]) {
for (const node of nodes) {
if (node.type === 'emojiCode') emojiNodes.push(node);
else if (node.children) scan(node.children);
}
}
scan(nodes);
const emojis = emojiNodes.filter(x => x.props.name.length <= 100).map(x => x.props.name!);
return unique(emojis);
}