addMessage method

index.d.ts

@@ -914,6 +914,14 @@ declare module "fastest-validator" {
 		 */
 		add(type: string, fn: CompilationFunction): void;
 
+		/**
+	 	 * Add a message
+	 	 *
+	 	 * @param {String} name
+	 	 * @param {String} message
+	 	 */
+		addMessage(name: string, message: string): void
+
 		/**
 		 * Register an alias in validation object
 		 * @param {string} name

lib/validator.js

@@ -2,7 +2,10 @@
 
 //const flatten = require("./helpers/flatten");
 const deepExtend = require("./helpers/deep-extend");
-const defaultMessages = require("./messages");
+
+function loadMessages() {
+	return Object.assign({} , require("./messages"));
+}
 
 function loadRules() {
 	return {
@@ -40,11 +43,9 @@ class Validator {
 	 * @param {Object} opts
 	 */
 	constructor(opts) {
-		this.opts = {
-			messages: deepExtend({}, defaultMessages)
-		};
+		this.opts = {};
 		this.defaults = {};
-		this.messages = this.opts.messages;
+		this.messages = loadMessages();
 		this.rules = loadRules();
 		this.aliases = {};
 		this.cache = new Map();
@@ -53,6 +54,10 @@ class Validator {
 			deepExtend(this.opts, opts);
 			if (opts.defaults) deepExtend(this.defaults, opts.defaults);
 
+			if (opts.messages) {
+				for (const messageName in opts.messages) this.addMessage(messageName, opts.messages[messageName]);
+			}
+
 			if (opts.aliases) {
 				for (const aliasName in opts.aliases) this.alias(aliasName, opts.aliases[aliasName]);
 			}
@@ -417,6 +422,16 @@ class Validator {
 		this.rules[type] = fn;
 	}
 
+	/**
+	 * Add a message
+	 *
+	 * @param {String} name
+	 * @param {String} message
+	 */
+	addMessage(name, message) {
+		this.messages[name] = message;
+	}
+
 	/**
 	 * create alias name for a rule
 	 *

test/validator.spec.js

@@ -647,3 +647,9 @@ describe("Test plugins", () => {
 	});
 });
 
+describe("Test addMessage" , () => {
+	const v = new Validator();
+	v.addMessage("string", "C");
+	expect(v.messages.string).toBe("C");
+});
+