47 lines
1.6 KiB
JavaScript
47 lines
1.6 KiB
JavaScript
import URLToolkit from 'url-toolkit';
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import window from 'global/window';
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var DEFAULT_LOCATION = 'http://example.com';
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var resolveUrl = function resolveUrl(baseUrl, relativeUrl) {
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// return early if we don't need to resolve
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if (/^[a-z]+:/i.test(relativeUrl)) {
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return relativeUrl;
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} // if baseUrl is a data URI, ignore it and resolve everything relative to window.location
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if (/^data:/.test(baseUrl)) {
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baseUrl = window.location && window.location.href || '';
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} // IE11 supports URL but not the URL constructor
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// feature detect the behavior we want
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var nativeURL = typeof window.URL === 'function';
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var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)
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// and if baseUrl isn't an absolute url
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var removeLocation = !window.location && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location
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if (nativeURL) {
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baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);
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} else if (!/\/\//i.test(baseUrl)) {
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baseUrl = URLToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);
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}
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if (nativeURL) {
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var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol
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// and if we're location-less, remove the location
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// otherwise, return the url unmodified
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if (removeLocation) {
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return newUrl.href.slice(DEFAULT_LOCATION.length);
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} else if (protocolLess) {
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return newUrl.href.slice(newUrl.protocol.length);
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}
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return newUrl.href;
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}
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return URLToolkit.buildAbsoluteURL(baseUrl, relativeUrl);
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};
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export default resolveUrl; |