After deploying my Node.js/Express.js application to AWS Lambda, I encountered a bcrypt error

I'm currently facing an issue with getting my express.js app to run on AWS Lambda. Despite successfully deploying it using the serverless framework, I encounter a 500 internal error when testing requests. The log displays the following error message:

/var/task/node_modules/bcrypt/lib/binding/napi-v3/bcrypt_lib.node: invalid ELF header
.

I attempted replacing bcrypt with bcryptjs, but the problem persists.

In my serverless.yml, I added the line below to prompt lambda to self-install bcrypt, yet it hasn't resolved the issue:

package:
  exclude:
    - node_modules/**

Any advice or suggestions?

node.jsexpressaws-lambdaserverless-frameworkbcrypt

Answer №1

First of all, make sure to include the necessary node modules in your project. AWS will not install any additional packages into the lambda node environment other than the aws-sdk.

Additionally, the error you are experiencing is likely due to developing on a Mac OS machine, causing the bcrypt binary from your machine to be included in the lambda upload.

Be sure to thoroughly remove bcrypt from your project dependencies when switching to bcryptjs.

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