feat(core): add isFileConstructor util

packages/core/src/lib/utils/index.ts

@@ -8,4 +8,5 @@ export * from './is-empty.util';
 export * from './is-defined.util';
 export * from './is-primitive-constructor.util';
 export * from './is-date-constructor.util';
+export * from './is-file-constructor.util';
 export * from './is-resolver.util';

packages/core/src/lib/utils/is-file-constructor.util.ts

@@ -0,0 +1,3 @@
+export function isFileConstructor(value: unknown): boolean {
+  return value === File;
+}

packages/core/src/lib/utils/specs/is-file-constructor.spec.ts

@@ -0,0 +1,8 @@
+import { isFileConstructor } from '../is-file-constructor.util';
+
+describe('isFileConstructor', () => {
+  it('should work', () => {
+    expect(isFileConstructor(File)).toEqual(true);
+    expect(isFileConstructor(Date)).toEqual(false);
+  });
+});