Created helper function to replace the authority on a URL

src/utils/helpers/uri.ts

@@ -0,0 +1,7 @@
+export const replaceAuthorityFromUri = (uri: string, newAuthority: string): string => {
+  const [ schema, rest ] = uri.split('://');
+  const [ , ...pathParts ] = rest.split('/');
+  const normalizedPath = pathParts.length ? `/${pathParts.join('/')}` : '';
+
+  return `${schema}://${newAuthority}${normalizedPath}`;
+};

test/utils/helpers/uri.test.ts

@@ -0,0 +1,13 @@
+import { replaceAuthorityFromUri } from '../../../src/utils/helpers/uri';
+
+describe('uri-helper', () => {
+  describe('replaceAuthorityFromUri', () => {
+    it.each([
+      [ 'http://something.com/foo/bar', 'www.new.to', 'http://www.new.to/foo/bar' ],
+      [ 'https://www.authori.ty:8000/', 'doma.in', 'https://doma.in/' ],
+      [ 'http://localhost:8080/this/is-a-long/path', 'somewhere:8888', 'http://somewhere:8888/this/is-a-long/path' ],
+    ])('replaces authority as expected', (uri, newAuthority, expectedResult) => {
+      expect(replaceAuthorityFromUri(uri, newAuthority)).toEqual(expectedResult);
+    });
+  });
+});