next
Version:
The React Framework
54 lines (53 loc) • 1.89 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "normalizeLocalePath", {
enumerable: true,
get: function() {
return normalizeLocalePath;
}
});
/**
* A cache of lowercased locales for each list of locales. This is stored as a
* WeakMap so if the locales are garbage collected, the cache entry will be
* removed as well.
*/ const cache = new WeakMap();
function normalizeLocalePath(pathname, locales) {
// If locales is undefined, return the pathname as is.
if (!locales) return {
pathname
};
// Get the cached lowercased locales or create a new cache entry.
let lowercasedLocales = cache.get(locales);
if (!lowercasedLocales) {
lowercasedLocales = locales.map((locale)=>locale.toLowerCase());
cache.set(locales, lowercasedLocales);
}
let detectedLocale;
// The first segment will be empty, because it has a leading `/`. If
// there is no further segment, there is no locale (or it's the default).
const segments = pathname.split('/', 2);
// If there's no second segment (ie, the pathname is just `/`), there's no
// locale.
if (!segments[1]) return {
pathname
};
// The second segment will contain the locale part if any.
const segment = segments[1].toLowerCase();
// See if the segment matches one of the locales. If it doesn't, there is
// no locale (or it's the default).
const index = lowercasedLocales.indexOf(segment);
if (index < 0) return {
pathname
};
// Return the case-sensitive locale.
detectedLocale = locales[index];
// Remove the `/${locale}` part of the pathname.
pathname = pathname.slice(detectedLocale.length + 1) || '/';
return {
pathname,
detectedLocale
};
}
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