Benchmark parse function

src/index.ts

@@ -61,20 +61,18 @@ namespace auth {
 
     // parse header
     const match = CREDENTIALS_REGEXP.exec(string);
-
-    if (!match) {
-      return undefined;
-    }
+    if (!match) return undefined;
 
     // decode user pass
-    const userPass = USER_PASS_REGEXP.exec(decodeBase64(match[1]));
-
-    if (!userPass) {
-      return undefined;
-    }
+    const userPass = decodeBase64(match[1]);
+    const colonIndex = userPass.indexOf(':');
+    if (colonIndex === -1) return undefined;
 
     // return credentials object
-    return new CredentialsImpl(userPass[1], userPass[2]);
+    return new CredentialsImpl(
+      userPass.slice(0, colonIndex),
+      userPass.slice(colonIndex + 1),
+    );
   }
 }
 
@@ -90,17 +88,6 @@ namespace auth {
 const CREDENTIALS_REGEXP =
   /^ *(?:[Bb][Aa][Ss][Ii][Cc]) +([A-Za-z0-9._~+/-]+=*) *$/;
 
-/**
- * RegExp for basic auth user/pass
- *
- * user-pass   = userid ":" password
- * userid      = *<TEXT excluding ":">
- * password    = *TEXT
- * @private
- */
-
-const USER_PASS_REGEXP = /^([^:]*):(.*)$/;
-
 /**
  * Decode base64 string.
  * @private

src/parse.bench.ts

@@ -0,0 +1,24 @@
+import { describe, bench } from 'vitest';
+import { parse } from './index';
+
+describe('parse', () => {
+  bench('basic auth header', () => {
+    const header = 'Basic dGVzdDpwYXNzd29yZA=='; // "test:password" in base64
+    parse(header);
+  });
+
+  bench('basic auth header with extra whitespace', () => {
+    const header = '   Basic   dGVzdDpwYXNzd29yZA==   '; // "test:password" in base64 with extra whitespace
+    parse(header);
+  });
+
+  bench('invalid basic auth header', () => {
+    const header = 'Basic invalidbase64'; // Invalid base64 string
+    parse(header);
+  });
+
+  bench('non-basic auth header', () => {
+    const header = 'Bearer sometoken'; // Not a basic auth header
+    parse(header);
+  });
+});