The simplest way to start using ES2017+ in Lambda.

This fork of serverless-babel-plugin has been updated in a few ways now that serverless/serverless-babel-plugin is unmaintained.

1. npm install headnote/serverless-babel-plugin --saveDev or yarn add -D headnote/serverless-babel-plugin

2. Add plugin to serverless.yml

plugins:
  ...
  - serverless-babel-plugin
  ...

3. Create a .babelrc file (example below).

4. Test it with serverless package

Thanks to babel-preset-env it is now very easy to target older versions of Node. As of writing this, the latest version of Node supported by Lambda is 6.10. Example .babelrc:

{
  "presets": [
    ["env", {
      "targets": {
        "node": "6.10"
      }
    }]
  ]
}

To log the stdout output from the Babel process (basically a list of all the files it processed), simply add this to serverless.yml. stderr will always be logged.

custom:
  serverlessBabel:
    stdout: true

• Incorporates all bugs fixed on other forks (at the time of writing this)
• Now uses babel-preset-env instead of deprecated babel-preset-latest. This allows you to easily use targeting.
• Now uses a standard .babelrc file in your project root instead of limited babel configuration living in serverless.yml
• Less verbose and prettier output by default.
• Now preserves *nix file permissions but is no longer compatible with Windows (PRs welcome).