feat(Node): add the Scheduler Node (#4223)

* ✨ Create Schedule node with MVP structure

* ✨ Add 24 increments for hours picker

* 🚨  Lintfix

* Add timestamp, add hour minute and cron expression

* Fix bug where there was one extra interval object

* Fix default value from fixedCollection

* 🐛 UI fixes

* 🎨 Changed logic to reflect UI fixes

* Fix auto intitialising

* Deprecated interval and cron in favor of schedule node

* 🐛 Ui fixes

* 🐛 Fix issue with week intervals

* 🚨 Lint fixes

* change order of days in the week to chronological order

packages/nodes-base/nodes/Cron/Cron.node.json

@@ -128,7 +128,7 @@
 			}
 		]
 	},
-	"alias": ["Time", "Scheduler", "Polling"],
+	"alias": ["Time", "Scheduler", "Polling", "Cron", "Interval"],
 	"subcategories": {
 		"Core Nodes": ["Flow"]
 	}

packages/nodes-base/nodes/Cron/Cron.node.ts

@@ -17,6 +17,7 @@ export class Cron implements INodeType {
 		icon: 'fa:calendar',
 		group: ['trigger', 'schedule'],
 		version: 1,
+		hidden: true,
 		description: 'Triggers the workflow at a specific time',
 		eventTriggerDescription: '',
 		activationMessage:
@@ -69,7 +70,9 @@ export class Cron implements INodeType {
 		const timezone = this.getTimezone();
 
 		// Start the cron-jobs
-		const cronJobs = cronTimes.map(cronTime => new CronJob(cronTime, executeTrigger, undefined, true, timezone));
+		const cronJobs = cronTimes.map(
+			(cronTime) => new CronJob(cronTime, executeTrigger, undefined, true, timezone),
+		);
 
 		// Stop the cron-jobs
 		async function closeFunction() {

packages/nodes-base/nodes/Interval/Interval.node.ts

@@ -13,6 +13,7 @@ export class Interval implements INodeType {
 		icon: 'fa:hourglass',
 		group: ['trigger', 'schedule'],
 		version: 1,
+		hidden: true,
 		description: 'Triggers the workflow in a given interval',
 		eventTriggerDescription: '',
 		activationMessage:

packages/nodes-base/nodes/Schedule/CronInterface.ts

@@ -0,0 +1,9 @@
+import { IDataObject } from 'n8n-workflow';
+
+export type ICronExpression = [
+	string | Date,
+	string | Date,
+	string | Date,
+	string | Date,
+	string | Date,
+];

packages/nodes-base/nodes/Schedule/ScheduleTrigger.node.json

@@ -0,0 +1,18 @@
+{
+	"node": "n8n-nodes-base.scheduleTrigger",
+	"nodeVersion": "1.0",
+	"codexVersion": "1.0",
+	"categories": ["Core Nodes"],
+	"resources": {
+		"primaryDocumentation": [
+			{
+				"url": "https://docs.n8n.io/nodes/n8n-nodes-base.scheduleTrigger/"
+			}
+		],
+		"generic": []
+	},
+	"alias": ["Time", "Scheduler", "Polling", "Cron", "Interval"],
+	"subcategories": {
+		"Core Nodes": ["Flow"]
+	}
+}