utils: add hasOwn instead of hasOwnProperty

lib/client.js

@@ -871,10 +871,10 @@ client.prototype.handleMessage = function handleMessage(message) {
 				message.tags.channel = channel;
 				this.emit("roomstate", channel, message.tags);
 
-				if(!message.tags.hasOwnProperty("subs-only")) {
+				if(!_.hasOwn(message.tags, "subs-only")) {
 					// Handle slow mode here instead of the slow_on/off notice..
 					// This room is now in slow mode. You may send messages every slow_duration seconds.
-					if(message.tags.hasOwnProperty("slow")) {
+					if(_.hasOwn(message.tags, "slow")) {
 						if(typeof message.tags.slow === "boolean" && !message.tags.slow) {
 							var disabled = [channel, false, 0];
 							this.log.info(`[${channel}] This room is no longer in slow mode.`);
@@ -895,7 +895,7 @@ client.prototype.handleMessage = function handleMessage(message) {
 					// duration is in minutes (string)
 					// -1 when /followersoff (string)
 					// false when /followers with no duration (boolean)
-					if(message.tags.hasOwnProperty("followers-only")) {
+					if(_.hasOwn(message.tags, "followers-only")) {
 						if(message.tags["followers-only"] === "-1") {
 							let disabled = [channel, false, 0];
 							this.log.info(`[${channel}] This room is no longer in followers-only mode.`);
@@ -1010,7 +1010,7 @@ client.prototype.handleMessage = function handleMessage(message) {
 				this.log.info(`[WHISPER] <${nick}>: ${msg}`);
 
 				// Update the tags to provide the username..
-				if(!message.tags.hasOwnProperty("username")) {
+				if(!_.hasOwn(message.tags, "username")) {
 					message.tags.username = nick;
 				}
 				message.tags["message-type"] = "whisper";
@@ -1052,22 +1052,22 @@ client.prototype.handleMessage = function handleMessage(message) {
 					message.tags["message-type"] = actionMessage ? "action" : "chat";
 					msg = actionMessage ? actionMessage[1] : msg;
 					// Check for Bits prior to actions message
-					if (message.tags.hasOwnProperty("bits")) {
+					if(_.hasOwn(message.tags, "bits")) {
 						this.emit("cheer", channel, message.tags, msg);
 					}
 					else {
 						//Handle Channel Point Redemptions (Require's Text Input)
-						if (message.tags.hasOwnProperty("msg-id")) {
-							if (message.tags["msg-id"] === "highlighted-message") {
+						if(_.hasOwn(message.tags, "msg-id")) {
+							if(message.tags["msg-id"] === "highlighted-message") {
 								let rewardtype = message.tags["msg-id"];
 								this.emit("redeem", channel, message.tags.username, rewardtype, message.tags, msg);
 							}
-							else if (message.tags["msg-id"] === "skip-subs-mode-message") {
+							else if(message.tags["msg-id"] === "skip-subs-mode-message") {
 								let rewardtype = message.tags["msg-id"];
 								this.emit("redeem", channel, message.tags.username, rewardtype, message.tags, msg);
 							}
 						}
-						else if (message.tags.hasOwnProperty("custom-reward-id")) {
+						else if(_.hasOwn(message.tags, "custom-reward-id")) {
 							let rewardtype = message.tags["custom-reward-id"];
 							this.emit("redeem", channel, message.tags.username, rewardtype, message.tags, msg);
 						}

lib/utils.js

@@ -9,6 +9,9 @@ var _ = module.exports = {
 	// Return the second value if the first value is undefined..
 	get: (obj1, obj2) => typeof obj1 === "undefined" ? obj2 : obj1,
 
+	// Indirectly use hasOwnProperty
+	hasOwn: (obj, key) => ({}).hasOwnProperty.call(obj, key),
+
 	// Race a promise against a delay..
 	promiseDelay: time => new Promise(resolve => setTimeout(resolve, time)),