How to use ES modules in Netlify functions

Feb 11, 2023

Learn how to use ES modules in Netlify functions: add type module to package.json, switch to export async function handler, and return instead of callback.

~~~

Add:

"type": "module",

To the repository’s root level package.json file.

Now instead of

exports.handler = async (event, context, callback) => {

}

use this:

export async function handler(event, context) {

}

And any time you used

callback(null, {
  statusCode: 200,
  body: html,
})

Now use

return {
  statusCode: 200,
  body: html,
}

Tagged: Services · All topics

~~~