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23 lines
733 B
TypeScript
23 lines
733 B
TypeScript
/**
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* Produce a URL whose origin is guaranteed to be the same as the base URL.
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* The path is either an absolute path (starting with `/`), or a full URL. In either case, only its path is used.
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*/
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export function mergeURLPath(
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/** Base URL. Result is guaranteed to use this URL's origin. */
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base: string,
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/** Either an absolute path (starting with `/`), or a full URL. If a full URL, its path */
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path: string,
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): string {
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const url = new URL(
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path.startsWith('/') ? path : new URL(path).pathname,
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base,
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);
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if (!path.startsWith('/')) {
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// Copy query parameters from the original URL to the new URL
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const originalUrl = new URL(path);
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url.search = originalUrl.search;
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}
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return url.toString();
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}
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