Reapply "."

This reverts commit 685260080e.

instance.js

@@ -0,0 +1,34 @@
+"use strict";
+const lib = require("@clusterio/lib");
+const {BaseInstancePlugin} = require("@clusterio/host");
+const {InstanceActionEvent} = require("./info.js");
+
+class InstancePlugin extends BaseInstancePlugin {
+	async init() {
+		this.messageQueue = [];
+	}
+
+	onControllerConnectionEvent(event) {
+		if (event === 'connect') {
+			for (const [action, content] of this.messageQueue) {
+				try {
+					this.instance.sendTo('controller', new InstanceActionEvent(this.instance.name, action, content));
+				} catch (err) {
+					this.messageQueue.push([output.action, output.message]);
+				}
+			}
+			this.messageQueue = [];
+		}
+	}
+
+	async onOutput(output) {
+		if (output.type !== 'action') return;
+		if (this.host.connector.connected) {
+			this.instance.sendTo('controller', new InstanceActionEvent(this.instance.name, output.action, output.message));
+		} else {
+			this.messageQueue.push([output.action, output.message]);
+		}
+	}
+}
+
+module.exports = {InstancePlugin};