Added new error code (429 - too many requests)

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@ztimson/utils",
-	"version": "0.28.5",
+	"version": "0.28.6",
 	"description": "Utility library",
 	"author": "Zak Timson",
 	"license": "MIT",

src/errors.ts

@@ -113,6 +113,18 @@ export class NotAcceptableError extends CustomError {
 	}
 }
 
+export class TooManyRequestsError extends CustomError {
+	static code = 429;
+
+	constructor(message: string = 'Rate Limit Reached') {
+		super(message);
+	}
+
+	static instanceof(err: Error) {
+		return (<any>err).constructor.code == this.code;
+	}
+}
+
 export class InternalServerError extends CustomError {
 	static code = 500;