rudeshark.net/src/misc/extract-emojis.ts

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import { EmojiNode, MfmForest } from '../mfm/prelude';
import { preorderF } from '../prelude/tree';
import { unique } from '../prelude/array';
export default function(mfmForest: MfmForest): string[] {
const emojiNodes = preorderF(mfmForest).filter(x => x.type === 'emoji') as EmojiNode[];
const emojis = emojiNodes.filter(x => x.props.name && x.props.name.length <= 100).map(x => x.props.name);
return unique(emojis);
}