Implement string casting in isNumber

Author: AJCStriker

package.json

@@ -1,6 +1,6 @@
 {
   "name": "strontium",
-  "version": "2.6.1",
+  "version": "2.6.2",
   "description": "Strontium is a TypeScript toolkit for High Performance API servers built for Production not Projects.",
   "main": "lib/src/index.js",
   "types": "lib/src/index.d.ts",

src/validation/drivers/validators/isNumber.ts

@@ -1,10 +1,18 @@
 import { ValidationError } from "../../../errors/http/ValidationError"
 
 export const isNumber = (input?: unknown): number => {
-    if (typeof input === "number") {
+    if (typeof input === "number" && !isNaN(input)) {
         return input
     }
 
+    if (typeof input === "string") {
+        let parsedNumber = Number(input)
+
+        if (!isNaN(parsedNumber)) {
+            return parsedNumber
+        }
+    }
+
     throw new ValidationError(
         "IS_NUMBER",
         "Value not a number",