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namae/api/services/jsorg/[query].ts

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import { VercelRequest, VercelResponse } from '@vercel/node';
import { fetch, send, sendError } from '../../../util/http';
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export default async function handler(
req: VercelRequest,
res: VercelResponse
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): Promise<void> {
const { query } = req.query;
if (!query || typeof query !== 'string') {
return sendError(res, new Error('No query given'));
}
if (!/([a-zA-Z0-9_-])\.js\.org/.test(query)) {
return sendError(res, new Error('Invalid format'));
}
const cname = query.replace(/\.js\.org$/, '');
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try {
// Get cnames from js.org repo
const source = await fetch(
`https://raw.githubusercontent.com/js-org/js.org/master/cnames_active.js`,
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'GET'
).then((res) => res.text());
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const cnames = Array.from(source.matchAll(/^ "(.+)":/gm)).map((m) => m[1]);
if (cnames.includes(cname)) {
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send(res, { availability: false });
} else {
send(res, { availability: true });
}
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} catch (err: any) {
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console.log(err);
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sendError(res, err);
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}
}