State machine definition does not support JSONata

[villagoizi]

Does not support JSONata

Description
In this line of code it expects a state.Parameters but when you use JSONata everything changes from Parameters to Arguments.

serverless-step-functions/lib/deploy/stepFunctions/compileIamRole.js

Line 329 in 313355a

const functionName = state.Parameters.FunctionName;

You get the following exception when performing an sls deploy:
TypeError: Cannot read properties of undefined (reading 'FunctionName')

This is the definition used

Comment: Validate
StartAt: input validation
QueryLanguage: JSONata
States:
  input validation:
    Type: Task
    Resource: arn:aws:states:::lambda:invoke
    Output: '{% $states.result.Payload %}'
    Assign:
      command: '{% $merge([$states.input.params.path, $states.input.body]) %}'
      meta: '{% $states.input %}'
    Arguments:
      FunctionName:
        'Fn::GetAtt':
          - ValidatorLambda
          - Arn
      Payload:
        rule: ${file(src/model-config/schemas/update.yml)}
        payload: '{% $merge([$states.input.params.path, $states.input.body]) %}'
    Retry:
      - ErrorEquals:
          - States.ALL
        IntervalSeconds: 1
        MaxAttempts: 2
        BackoffRate: 1
        JitterStrategy: FULL
    End: true

Additional data

• Serverless Framework Core Version you're using: ^3
• The Plugin Version you're using: ^3.21.1
• Operating System: Linux

[olivierto]

• 1 same issue !
  Converted a big step function to JSONata in the AWS console... lost 2 days of work to realise that it's not supported :'(
  I will try to make a PR ...