Added slug utility function

src/getLocale.ts

@@ -13,3 +13,20 @@ export function getLocale(url: URL): string | undefined {
   // otherwise, it must be a defaultLocale or other url
   return undefined;
 }
+
+/**
+ * @returns locale key or undefined if defaultLocale
+ */
+export function getLocaleFromSlug(slug: string): string | undefined {
+
+  if(slug?.length > 0 && slug[0] === "/") {
+    slug = slug.slice(1);
+  }
+
+  const pathSlices = slug.split("/");
+  if (pathSlices.length > 1) {
+    return pathSlices[0];
+  }
+
+  return undefined;
+}

src/getUrlWithoutLocale.ts

@@ -13,3 +13,29 @@ export function getUrlWithoutLocale(url: URL): string {
   // otherwise, it must be a defaultLocale or other url
   return url.pathname;
 }
+
+/**
+ * @returns url without locale prefix, "/es/about" => "/about"
+ */
+export function getUrlWithoutLocaleFromSlug(slug: string): string {
+  if(slug?.length === 0 ){
+    return "/";
+  }
+
+  if(slug[0] !== "/") {
+    slug = "/" + slug;
+  }
+
+  // avoid catching urls that start with "/en" like "/enigma"
+  if(slug.length === 3) {
+    return "/";
+  }
+
+  if (slug[0] === "/" && slug[3] === "/") {
+    // catch all "/fr/**/*" urls
+    return slug.slice(3);
+  }
+
+  // otherwise, it must be a defaultLocale or other url
+  return slug;
+}

src/index.ts

@@ -1,9 +1,9 @@
 export { i18n, i18n as default } from "./integration";
 export { i18nMiddleware } from "./middleware";
 export { defaultLocaleSitemapFilter } from "./defaultLocaleSitemapFilter";
-export { getLocale } from "./getLocale";
+export { getLocale, getLocaleFromSlug } from "./getLocale";
 export { getLocaleUrlPrefix } from "./getLocaleUrlPrefix";
-export { getUrlWithoutLocale } from "./getUrlWithoutLocale";
+export { getUrlWithoutLocale, getUrlWithoutLocaleFromSlug } from "./getUrlWithoutLocale";
 export { defaultI18nConfig, defaultI18nMiddlewareConfig } from "./configs";
 export type {
   UserI18nConfig,