minor(vest-utils): Predicates: Support boolean value

packages/vest-utils/src/Predicates.ts

@@ -1,13 +1,18 @@
 import { isEmpty } from 'isEmpty';
+import optionalFunctionValue from 'optionalFunctionValue';
 
-export type Predicate<T> = (value: T) => boolean;
+export type Predicate<T> = boolean | ((value: T) => boolean);
 
 export function all<T = any>(...p: Predicate<T>[]): (value: T) => boolean {
   return (value: T) =>
-    isEmpty(p) ? false : p.every(predicate => predicate(value));
+    isEmpty(p)
+      ? false
+      : p.every(predicate => optionalFunctionValue(predicate, value));
 }
 
 export function any<T = any>(...p: Predicate<T>[]): (value: T) => boolean {
   return (value: T) =>
-    isEmpty(p) ? false : p.some(predicate => predicate(value));
+    isEmpty(p)
+      ? false
+      : p.some(predicate => optionalFunctionValue(predicate, value));
 }

packages/vest-utils/src/__tests__/Predicates.test.ts

@@ -52,6 +52,14 @@ describe('Predicates', () => {
       expect(spy1).toHaveBeenCalledWith(5);
       expect(spy2).toHaveBeenCalledWith(5);
     });
+
+    it('When passing explicit true as a predicate, should return true', () => {
+      expect(all(true, true, true)(5)).toBe(true);
+    });
+
+    it('When passing explicit false as a predicate, should return false', () => {
+      expect(all(true, false, false)(5)).toBe(false);
+    });
   });
 
   describe('any', () => {
@@ -97,5 +105,13 @@ describe('Predicates', () => {
 
       expect(predicate(15)).toBe(false);
     });
+
+    it('When passing explicit true as a predicate, should return true', () => {
+      expect(any(true, false, false)(5)).toBe(true);
+    });
+
+    it('When passing explicit false as a predicate, should return false', () => {
+      expect(any(false, false, false)(5)).toBe(false);
+    });
   });
 });