Prepare error codes for next release

Author: laurentpellegrino

src/errors.ts

@@ -60,21 +60,23 @@ export class LookupError extends ApiError {
 
 export enum ErrorCode {
 
-    BAD_REQUEST,
-    DISABLED_API_KEY,
-    FORBIDDEN_IP,
-    FORBIDDEN_ORIGIN,
-    FORBIDDEN_IP_ORIGIN,
-    INTERNAL,
-    INSUFFICIENT_CREDITS,
-    INVALID_API_KEY,
-    INVALID_FILTER_SYNTAX,
-    INVALID_IP_ADDRESS,
-    MISSING_API_KEY,
-    PRIVATE_IP_ADDRESS,
-    TOO_MANY_IPS,
-    TOO_MANY_REQUESTS,
-    TOO_MANY_USER_AGENTS
+    BAD_REQUEST = 'BAD_REQUEST',
+    DISABLED_API_KEY = 'DISABLED_API_KEY',
+    FORBIDDEN_IP = 'FORBIDDEN_IP',
+    FORBIDDEN_ORIGIN = 'FORBIDDEN_ORIGIN',
+    FORBIDDEN_IP_ORIGIN = 'FORBIDDEN_IP_ORIGIN',
+    INTERNAL = 'INTERNAL',
+    INSUFFICIENT_CREDITS = 'INSUFFICIENT_CREDITS',
+    INVALID_API_KEY = 'INVALID_API_KEY',
+    INVALID_FILTER_SYNTAX = 'INVALID_FILTER_SYNTAX',
+    INVALID_IP_ADDRESS = 'INVALID_IP_ADDRESS',
+    MISSING_API_KEY = 'MISSING_API_KEY',
+    /** @deprecated */
+    PRIVATE_IP_ADDRESS = 'PRIVATE_IP_ADDRESS',
+    RESERVED_IP_ADDRESS = 'RESERVED_IP_ADDRESS',
+    TOO_MANY_IPS = 'TOO_MANY_IPS',
+    TOO_MANY_REQUESTS = 'TOO_MANY_REQUESTS',
+    TOO_MANY_USER_AGENTS = 'TOO_MANY_USER_AGENTS'
 
 }