fix(assertion-matchers): Refactor matcher implementations to consistently use customAssertion for improved consistency and clarity.

ts/namespaces/boolean.ts

@@ -7,18 +7,30 @@ export class BooleanMatchers {
   constructor(private assertion: Assertion<boolean>) {}
 
   toBeTrue() {
-    return this.assertion.toBeTrue();
+    return this.assertion.customAssertion(
+      (v) => v === true,
+      `Expected value to be true`
+    );
   }
 
   toBeFalse() {
-    return this.assertion.toBeFalse();
+    return this.assertion.customAssertion(
+      (v) => v === false,
+      `Expected value to be false`
+    );
   }
 
   toBeTruthy() {
-    return this.assertion.toBeTruthy();
+    return this.assertion.customAssertion(
+      (v) => Boolean(v),
+      `Expected value to be truthy`
+    );
   }
 
   toBeFalsy() {
-    return this.assertion.toBeFalsy();
+    return this.assertion.customAssertion(
+      (v) => !v,
+      `Expected value to be falsy`
+    );
   }
 }