import * as qs from 'querystring';
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/**
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* @typedef ParsedURL
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* @type {import('.').ParsedURL}
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*/
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/**
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* @typedef Request
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* @property {string} url
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* @property {ParsedURL} _parsedUrl
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*/
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/**
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* @param {Request} req
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* @returns {ParsedURL|void}
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*/
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export function parse(req) {
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let raw = req.url;
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if (raw == null) return;
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let prev = req._parsedUrl;
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if (prev && prev.raw === raw) return prev;
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let pathname=raw, search='', query;
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if (raw.length > 1) {
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let idx = raw.indexOf('?', 1);
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if (idx !== -1) {
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search = raw.substring(idx);
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pathname = raw.substring(0, idx);
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if (search.length > 1) {
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query = qs.parse(search.substring(1));
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}
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}
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}
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return req._parsedUrl = { pathname, search, query, raw };
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}
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