Hello world (JS)

Index.js

First let's create a simple hello-world script. We are creating a function called handler() that we act as the entryPoint of our Function. Our goal is to print a simple "hello world" to the console.

exports.handler(()=>{
    console.log('hello world');
});

If you are using visual studio code, this should look something like this:

Deploying with the ExH CLI

You can deploy it to the task service using the EXH CLI Tool.

exh tasks sync --name hello-world \
   --code= my/directory \
   --entryPoint=index.handler \
   --runtime="nodejs14.x"

To create a function we need to provide:

• Function name (name)

• Reference to the directory containing the (built) code (code)

• The entryPoint in this case our handler function in the index.js file (entryPoint)

• The runtime needed to run our code (runtime)

You can see a hello-world function has been created in the task service. Visit the Task service documentation on how to create a task and run it.

Tips

• When synchronizing your task, make sure that you also include the node_modules directory if necessary

• Make sure not include any developer dependencies when bundling your task. Otherwise the size of your task might be too big (there is a 10MB limit). You can easily strip developer dependencies by using npm install --production or yarn install --production