Add command-with-modifiers.js example (#1695)

* Adds TypeScript note and corrects a typo.

* Adds command-with-modifiers example. (redis#1688)

* Adds command-with-modifiers example. (redis#1688)

* Adds command-with-modifiers example. (redis#1688)

* Removed callbacks.

Co-authored-by: Simon Prickett <simon@redislabs.com>

Closes #1688.

examples/README.md

@@ -2,11 +2,12 @@
 
 This folder contains example scripts showing how to use Node Redis in different scenarios.
 
-| File Name                | Description                          |
-|--------------------------|--------------------------------------|
-| `connect-as-acl-user.js` | Connect to Redis 6 using an ACL user |
-| `blocking-list-pop.js`   | Block until an element is pushed to a list  |
-| `lua-multi-incr.js`      | Define a custom lua script that allows you to perform INCRBY on multiple keys |
+| File Name                   | Description                          |
+|-----------------------------|--------------------------------------|
+| `connect-as-acl-user.js`    | Connect to Redis 6 using an ACL user |
+| `blocking-list-pop.js`      | Block until an element is pushed to a list  |
+| `lua-multi-incr.js`         | Define a custom lua script that allows you to perform INCRBY on multiple keys |
+| `command-with-modifiers.js` | Define a script that allows to run a command with several modifiers |
 
 ## Contributing
 

examples/command-with-modifiers.js

@@ -0,0 +1,32 @@
+// Define a custom script that shows example of SET command
+// with several modifiers.
+
+import { createClient } from 'redis';
+
+async function commandWithModifiers() {
+  const client = createClient();
+
+  await client.connect();
+  await client.del('mykey');
+
+  let result = await client.set('mykey', 'myvalue', {
+      EX: 60,
+      GET: true
+    }
+  ); 
+  
+  console.log(result); //nil
+
+  result = await client.set('mykey', 'newvalue', {
+      EX: 60,
+      GET: true
+    }
+  );                        
+  
+  console.log(result); //myvalue
+
+  await client.quit();
+}
+
+commandWithModifiers();
+