added number

validators/number.ts

@@ -0,0 +1,25 @@
+import { Validator, Args } from "../mod.ts";
+
+export const isNumber: Validator = {
+  type: "isNumber",
+  check: (value: any) => {
+    if (!Number.isFinite(value)) {
+      return {};
+    }
+  },
+  message: (value: any, args?: Args) => {
+    return `The value '${value && value.toString()}' has to be a number.`;
+  },
+};
+
+export const isInteger: Validator = {
+  type: "isInteger",
+  check: (value: any) => {
+    if (!Number.isInteger(value)) {
+      return {};
+    }
+  },
+  message: (value: any, args?: Args) => {
+    return `The value '${value && value.toString()}' has to be an integer.`;
+  },
+};