Align Bool isEmpty, true when false is wrapped (#1967)

packages/types/src/primitive/Bool.spec.ts

@@ -42,11 +42,11 @@ describe('Bool', (): void => {
   });
 
   describe('utils', (): void => {
-    it('compares agains a boolean', (): void => {
+    it('compares against a boolean', (): void => {
       expect(new Bool(registry, true).eq(true)).toBe(true);
     });
 
-    it('compares agains a Bool', (): void => {
+    it('compares against a Bool', (): void => {
       expect(new Bool(registry, false).eq(new Bool(registry, false))).toBe(true);
     });
 
@@ -57,5 +57,11 @@ describe('Bool', (): void => {
     it('has isFalse', (): void => {
       expect(new Bool(registry, true).isFalse).toBe(false);
     });
+
+    it('has sane isEmpty aligning with the rest', (): void => {
+      expect(new Bool(registry).isEmpty).toBe(true);
+      expect(new Bool(registry, false).isEmpty).toBe(true);
+      expect(new Bool(registry, true).isEmpty).toBe(false);
+    });
   });
 });

packages/types/src/primitive/Bool.ts

@@ -50,10 +50,10 @@ export default class Bool extends Boolean implements Codec {
   }
 
   /**
-   * @description Checks if the value is an empty value (always false)
+   * @description Checks if the value is an empty value (true when it wraps false/default)
    */
   public get isEmpty (): boolean {
-    return false;
+    return this.isFalse;
   }
 
   /**