add @types/node-cron (#23062)

* add node-cron

* Update tslint.json

Remove lint rule

types/node-cron/index.d.ts

@@ -0,0 +1,15 @@
+// Type definitions for node-cron 1.2
+// Project: http://merencia.com/node-cron/
+// Definitions by: morsic <https://github.com/maximelkin>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+// immediateStart - default true
+export function schedule(a: string, func: () => void, immediateStart?: boolean): ScheduledTask;
+
+export function validate(a: string): boolean;
+
+export interface ScheduledTask {
+    start: () => this;
+    stop: () => this;
+    destroy: () => void;
+}

types/node-cron/node-cron-tests.ts

@@ -0,0 +1,47 @@
+/// <reference types="node" />
+
+import cron = require('node-cron');
+
+// tslint:disable-next-line no-console
+const log = console.log;
+
+cron.schedule('* * * * *', () => {
+    log('running a task every minute');
+});
+
+cron.schedule('1-5 * * * *', () => {
+    log('running every minute to 1 from 5');
+});
+
+// tslint:disable-next-line rule
+const task = cron.schedule('* * * * *', () => {
+    log('immediately started');
+    // because of manual call start method
+}, false);
+
+task.start();
+
+const task1 = cron.schedule('* * * * *', () => {
+    log('will execute every minute until stopped');
+});
+
+task1.start();
+
+const task2 = cron.schedule('* * * * *', () => {
+    log('will execute every minute until stopped');
+});
+
+task2.stop();
+
+const task3 = cron.schedule('* * * * *', () => {
+    log('will execute every minute until stopped');
+});
+
+task3.destroy();
+
+const valid = cron.validate('59 * * * *');
+const invalid = cron.validate('60 * * * *');
+
+if (valid && !invalid) {
+    log('validator works');
+}

types/node-cron/tsconfig.json

@@ -0,0 +1,25 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "strictNullChecks": true,
+        "noImplicitThis": true,
+        "noUnusedLocals": true,
+        "strictFunctionTypes": true,
+        "noUnusedParameters": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "node-cron-tests.ts"
+    ]
+}

types/node-cron/tslint.json

@@ -0,0 +1,3 @@
+{
+    "extends": "dtslint/dt.json"
+}