.

proto.js

@@ -1,9 +1,22 @@
 let warned = false
 
-Object.defineProperty(Object.prototype, "copyDeep", {
+Object.defineProperties(Object.prototype, {
+	copyDeep: {
 		value: function() {
 			return JSON.parse(JSON.stringify(this))
 		}
+	},
+	num: {
+		value: function() {
+			if (this.map) {
+				return this.map((e) => +e)
+			} else if (this.mapMut) {
+				return this.mapMut((e) => +e)
+			} else {
+				console.error("Object.prototype.num: No suitable map method found")
+			}
+		}
+	}
 })
 
 Object.defineProperties(Array.prototype, {