AWS - Print

Print your serverless.yml config file with all variables resolved.

If you're using osls variables in your serverless.yml, it can be difficult to know if your syntax is correct or if the variables are resolving as you expect.

With this command, it will print the fully-resolved config to your console.

osls print

Options

• --format Print configuration in given format ("yaml", "json", "text"). Default: yaml
• --path Period-separated path to print a sub-value (eg: "provider.name")
• --transform Transform-function to apply to the value (currently only "keys" is supported)

Examples

Assuming you have the following config file:

service: my-service

custom:
  bucketName: test

provider:
  name: aws
  runtime: nodejs24.x

functions:
  hello:
    handler: handler.hello

resources:
  Resources:
    MyBucket:
      Type: AWS::S3::Bucket
      Properties:
        BucketName: ${self:custom.bucketName}

Using osls print will resolve the variables in provider.stage and BucketName.

$ osls print
service: my-service
custom:
  bucketName: test
provider:
  name: aws
  runtime: nodejs24.x
  stage: dev # <-- Resolved
functions:
  hello:
    handler: handler.hello
resources:
  Resources:
    MyBucket:
      Type: 'AWS::S3::Bucket'
      Properties:
        BucketName: test # <-- Resolved

This prints the provider name:

osls print --path provider.name --format text

And this prints all function names:

osls print --path functions --transform keys --format text

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