From 978cd7d80a372808aa175ca92fa6735bbcba5074 Mon Sep 17 00:00:00 2001
From: Mathias Leppich <mleppich@muhqu.de>
Date: Sat, 21 Sep 2024 00:11:20 +0200
Subject: [PATCH] fix createExpect to retain asymmetric matchers

---
 packages/playwright/src/matchers/expect.ts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/packages/playwright/src/matchers/expect.ts b/packages/playwright/src/matchers/expect.ts
index 3a254ae7bf..c3a604521f 100644
--- a/packages/playwright/src/matchers/expect.ts
+++ b/packages/playwright/src/matchers/expect.ts
@@ -153,6 +153,7 @@ function createExpect(info: ExpectMetaInfo, prefix: string[], customMatchers: Re
               return (matcher as any).call(newThis, ...args);
             };
             Object.defineProperty(wrappedMatchers[key], 'name', { value: name });
+            Object.defineProperty(wrappedMatchers[key], 'qualifiedName', { value: key });
             extendedMatchers[name] = wrappedMatchers[key];
           }
           expectLibrary.extend(wrappedMatchers);
@@ -176,6 +177,24 @@ function createExpect(info: ExpectMetaInfo, prefix: string[], customMatchers: Re
           return configure({ _poll: poll })(actual, messageOrOptions) as any;
         };
       }
+
+      if (typeof property === 'string' && typeof customMatchers[property] === 'function' && typeof (customMatchers[property] as any).qualifiedName === 'string') {
+        const qualifiedName = (customMatchers[property] as any).qualifiedName as string;
+        return (expectLibrary as any)[qualifiedName];
+      }
+
+      if (property === 'not') {
+        return new Proxy(expectLibrary, {
+          get: function(target: any, property: string) {
+            if (typeof property === 'string' && typeof customMatchers[property] === 'function' && typeof (customMatchers[property] as any).qualifiedName === 'string') {
+              const qualifiedName = (customMatchers[property] as any).qualifiedName as string;
+              return (expectLibrary as any)['not'][qualifiedName];
+            }
+            return (expectLibrary as any)['not'][property];
+          },
+        });
+      }
+
       return (expectLibrary as any)[property];
     },
   });