extractInitials without Regex lookbehind

Signed-off-by: Taras Mankovski <taras@frontside.com>

packages/core-components/src/components/Avatar/util.test.ts

@@ -36,6 +36,6 @@ describe('extractInitials', () => {
   });
 
   it('limit the initials to two letters', async () => {
-    expect(extractInitials('John Jonathan Doe')).toEqual('JJ');
+    expect(extractInitials('John Jonathan Doe')).toEqual('JD');
   });
 });

packages/core-components/src/components/Avatar/utils.ts

@@ -27,9 +27,11 @@ export function stringToColor(str: string) {
   return color;
 }
 
-export function extractInitials(value: string) {
-  return value
-    .match(/(?<!\p{L})\p{L}/gu)
-    ?.join('')
-    .slice(0, 2);
+export function extractInitials(name: string) {
+  const names = name.split(' ');
+  const firstName = names[0] ?? '';
+  const lastName = names.length > 1 ? names[names.length - 1] : '';
+  return firstName && lastName
+    ? `${firstName.charAt(0)}${lastName.charAt(0)}`
+    : firstName.charAt(0);
 }