chore: import upstream snapshot with attribution

test/e2e/common/expect.js

@@ -0,0 +1,33 @@
+// expect.js
+const { expect: playwrightExpect } = require('@playwright/test')
+
+function extend (value) {
+  const originalExpect = playwrightExpect(value)
+
+  // Create a proxy to handle all method calls
+  return new Proxy(originalExpect, {
+    get (target, prop) {
+      // Handle the five custom functions
+      if (prop === 'equal' || prop === 'equals') {
+        return (expected) => target.toEqual(expected)
+      }
+      if (prop === 'lessThan') {
+        return (expected) => target.toBeLessThan(expected)
+      }
+      if (prop === 'greaterThan') {
+        return (expected) => target.toBeGreaterThan(expected)
+      }
+      if (prop === 'includes') {
+        return (expected) => target.toContain(expected)
+      }
+
+      // For all other properties, return the original Playwright expect method
+      return target[prop]
+    }
+  })
+}
+
+// Export a function that looks like Chai's expect
+module.exports = {
+  expect: (actual) => extend(actual)
+}