Failing with `ES Modules may not assign module.exports or exports.*, Use ESM export syntax, instead`

[arthurliebhardt]

Hello,

my lambda failing with the following error. Do I need to use import instead of require everywhere with serverless-bundle?

"ES Modules may not assign module.exports or exports.*, Use ESM export syntax, instead: 53521"

Thank you and best,

[vikram-rb]

+1 on this. Any solution ?

[arthurliebhardt]

+1 on this. Any solution?

One solution which worked for me is to import / export all the direct imports (which are in the same folder or above for example) using ESM import / export. Also the handler needs to be exported either with export default const .... than also the handler needs to be named default in the serverless.yml or doing a const handlerName and then on the bottom export { handlerName } than the handler name can be the same in the serverless.yml.

Hope this helps.

[srax47]

Any solution on this?

I'm also getting this error, in my case I'm using prisma4 with serverless-bundle, and my runtime is Node 16

[Puvipavan]

Use esbuild-loader

Add following option to serverless.yml file

custom:
  bundle:
    esbuild: true