use bun's equal check

src/testSetup.ts

@@ -108,16 +108,10 @@ expect.extend({
       if (expected instanceof RegExp) expected = String(expected)
       if (value instanceof RegExp) value = String(value)
 
-      if (isEqual(value, expected)) {
-        return { pass: true }
-      } else {
-        return {
-          message: () =>
-            `Expected evaluation to be ${JSON.stringify(expected)}, but got ${JSON.stringify(
-              value
-            )}`,
-          pass: false,
-        }
+      expect(value).toEqual(expected)
+      return {
+        message: () => `Expected evaluation to be ${expected}, but got ${value}`,
+        pass: true,
       }
     } catch (error) {
       return {
@@ -167,29 +161,3 @@ const trimWhitespace = (str: string): string => {
     })
     .join('\n')
 }
-
-function isEqual(a: any, b: any): boolean {
-  if (a === null && b === null) return true
-
-  switch (typeof a) {
-    case 'string':
-    case 'number':
-    case 'boolean':
-    case 'undefined':
-      return a === b
-    default:
-      return JSON.stringify(sortKeys(a)) === JSON.stringify(sortKeys(b))
-  }
-}
-
-function sortKeys(o: any): any {
-  if (Array.isArray(o)) return o.map(sortKeys)
-  if (o && typeof o === 'object' && o.constructor === Object)
-    return Object.keys(o)
-      .sort()
-      .reduce((r, k) => {
-        r[k] = sortKeys(o[k])
-        return r
-      }, {} as any)
-  return o
-}