27 lines
772 B
TypeScript
27 lines
772 B
TypeScript
import * as mfm from "mfm-js";
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import { unique } from "@/scripts/array";
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// unique without hash
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// [ http://a/#1, http://a/#2, http://b/#3 ] => [ http://a/#1, http://b/#3 ]
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const removeHash = (x: string) => x.replace(/#[^#]*$/, "");
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export function extractUrlFromMfm(
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nodes: mfm.MfmNode[],
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respectSilentFlag = true,
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): string[] {
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const urlNodes = mfm.extract(nodes, (node) => {
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return (
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node.type === "url" ||
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(node.type === "link" && !(respectSilentFlag && node.props.silent))
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);
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});
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const urls: string[] = unique(urlNodes.map((x) => x.props.url));
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return urls.reduce((array, url) => {
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const urlWithoutHash = removeHash(url);
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if (!array.map((x) => removeHash(x)).includes(urlWithoutHash))
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array.push(url);
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return array;
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}, [] as string[]);
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}
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