egirlskey/src/remote/webfinger.ts

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const WebFinger = require('webfinger.js');
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const webFinger = new WebFinger({ });
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type ILink = {
href: string;
rel: string;
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};
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type IWebFinger = {
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links: ILink[];
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subject: string;
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};
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export default async function resolve(query, verifier?: string): Promise<IWebFinger> {
const finger = await new Promise((res, rej) => webFinger.lookup(query, (error, result) => {
if (error) {
return rej(error);
}
res(result.object);
})) as IWebFinger;
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const subject = finger.subject.toLowerCase().replace(/^acct:/, '');
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if (typeof verifier === 'string') {
if (subject !== verifier) {
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throw new Error();
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}
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return finger;
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}
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if (typeof subject === 'string') {
return resolve(subject, subject);
}
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throw new Error();
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}