Node.js 10.x and 11.x for AWS Lambda

A custom runtime for AWS Lambda to execute functions in Node.js 10.x or 11.x

Getting Started

Save as index.js:

exports.handler = async(event, context) => {
  console.log(`Hi from Node.js ${process.version} on Lambda!`)
  console.log(`There is ${context.getRemainingTimeInMillis()}ms remaining`)
  return event
}

Then bundle up into a zipfile – this is your function bundle:

zip -yr lambda.zip index.js  # add node_modules too if you have any

Create a new Lambda function and choose the custom runtime option.

Select your lambda.zip as the "Function code" and make the handler "index.handler".

Then click on Layers and choose "Add a layer", and "Provide a layer version ARN" and enter the following ARN:

arn:aws:lambda:us-east-1:553035198032:layer:nodejs10:1

Or use this link and pick your function from the "Function name" auto-suggest.

Then save your lambda and test it with a test event!

Current Version ARNs

Node.js version	ARN
10.14.2	arn:aws:lambda:<region>:553035198032:layer:nodejs10:2
11.4.0	arn:aws:lambda:<region>:553035198032:layer:nodejs11:3

Previous Version ARNs

Node.js version	ARN
10.14.1	arn:aws:lambda:<region>:553035198032:layer:nodejs10:1
11.3.0	arn:aws:lambda:<region>:553035198032:layer:nodejs11:1

Things to be aware of

• This is a no-batteries-included runtime – you'll need to zip up any node_modules dependencies, including aws-sdk with your lambda function
• Cold start overhead of ~270ms for Node.js 10.x and ~290ms for 11.x – this is due to Node.js' increasingly slow startup time, but they're working on it!