feat(empty): add validator for empty

TomokiMiyauci · May 18, 2023 · fd4dd0b · fd4dd0b
1 parent dccc945
commit fd4dd0b
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/validators/iterable/empty.ts b/validators/iterable/empty.ts
@@ -0,0 +1,15 @@
+// Copyright 2023-latest Tomoki Miyauchi. All rights reserved. MIT license.
+// This module is browser compatible.
+
+import { isEmpty } from "../../deps.ts";
+import { display, format, ScalarValidator } from "../../utils.ts";
+import error from "../error.json" assert { type: "json" };
+
+@display("empty")
+export class EmptyValidator extends ScalarValidator<Iterable<unknown>> {
+  constructor() {
+    super();
+    super.expect(() => format(error.should_be, this));
+  }
+  override is = isEmpty;
+}