42 lines
982 B
JavaScript
42 lines
982 B
JavaScript
const url = require("url");
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const packageURLFormat = /^\/((?:@[^/@]+\/)?[^/@]+)(?:@([^/]+))?(\/.*)?$/;
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function decodeParam(param) {
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if (param) {
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try {
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return decodeURIComponent(param);
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} catch (error) {
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// Ignore invalid params.
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}
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}
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return "";
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}
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function parsePackageURL(originalURL) {
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const { pathname, search, query } = url.parse(originalURL, true);
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const match = packageURLFormat.exec(pathname);
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// Disallow invalid URL formats.
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if (match == null) {
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return null;
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}
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const packageName = match[1];
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const packageVersion = decodeParam(match[2]) || "latest";
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const filename = decodeParam(match[3]);
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return {
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// If the URL is /@scope/name@version/file.js?main=browser:
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pathname, // /@scope/name@version/path.js
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search: search || "", // ?main=browser
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query, // { main: 'browser' }
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packageName, // @scope/name
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packageVersion, // version
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filename // /file.js
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};
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}
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module.exports = parsePackageURL;
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