20 lines
744 B
TypeScript
20 lines
744 B
TypeScript
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import npath from 'path-browserify';
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/** Normalize URL to its canonical form */
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export function createCanonicalURL(url: string, base?: string): URL {
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let pathname = url.replace(/\/index.html$/, ''); // index.html is not canonical
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pathname = pathname.replace(/\/1\/?$/, ''); // neither is a trailing /1/ (impl. detail of collections)
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if (!npath.extname(pathname)) pathname = pathname.replace(/(\/+)?$/, '/'); // add trailing slash if there’s no extension
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pathname = pathname.replace(/\/+/g, '/'); // remove duplicate slashes (URL() won’t)
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return new URL(pathname, base);
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}
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/** Check if a URL is already valid */
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export function isValidURL(url: string): boolean {
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try {
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new URL(url);
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return true;
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} catch (e) {}
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return false;
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}
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