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

ts/namespaces/type.ts

@@ -7,22 +7,37 @@ export class TypeMatchers {
   constructor(private assertion: Assertion<any>) {}
 
   toBeTypeofString() {
-    return this.assertion.toBeTypeofString();
+    return this.assertion.customAssertion(
+      (v) => typeof v === 'string',
+      `Expected type to be 'string'`
+    );
   }
 
   toBeTypeofNumber() {
-    return this.assertion.toBeTypeofNumber();
+    return this.assertion.customAssertion(
+      (v) => typeof v === 'number',
+      `Expected type to be 'number'`
+    );
   }
 
   toBeTypeofBoolean() {
-    return this.assertion.toBeTypeofBoolean();
+    return this.assertion.customAssertion(
+      (v) => typeof v === 'boolean',
+      `Expected type to be 'boolean'`
+    );
   }
 
   toBeTypeOf(typeName: string) {
-    return this.assertion.toBeTypeOf(typeName);
+    return this.assertion.customAssertion(
+      (v) => typeof v === typeName,
+      `Expected type to be '${typeName}'`
+    );
   }
 
   toBeDefined() {
-    return this.assertion.toBeDefined();
+    return this.assertion.customAssertion(
+      (v) => v !== undefined,
+      `Expected value to be defined`
+    );
   }
 }