MissingRequiredParameter: Missing required key params.StreamSpecification

[jordanmaxfightcamp]

This is kind of annoying but having an issue here that doesnt play well with Serverless. I have a DynamoDB table and using the jest dynamodb package to run a local DDB when running unit tests. I am using version 1.8.1, I have a table that has a StreamSpecification set, which deploys fine using serverless (although I DO see StreamEnabled property on AWS docs). But when I run unit tests, I get this error:

MissingRequiredParameter: Missing required key params.StreamSpecification

so I add it, tests run fine. Then when I try to deploy using serverless I get this error:

serverless Encountered unsupported property StreamEnabled

I assume this is a bug, but any workarounds?

[jordanmaxfightcamp]

I did find a workaround:

await serverless.init();
  const service = await serverless.variables.populateService();
  const resources = service.resources.Resources;
  let tables = Object.keys(resources)
    .map((name) => resources[name])
    .filter((r) => r.Type === 'AWS::DynamoDB::Table')
    .map((r) => r.Properties);
  
  // This is a workaround, there is some bug that says we need a property called `StreamEnabled` on tables with `StreamSpecification` but that will error out serverless.
  // It's also not in the docs, so I am erroring on the side of Serverless since it seems they are adhering to rules
  // https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-dynamodb-streamspecification.html
  // So the workaround, is for local, we dont need streams anyways, remove this property to not get error.
  tables = tables.map(table => {
    const { StreamSpecification } = table;
    if(StreamSpecification) {
      delete table.StreamSpecification;
    }

    return table;
  })

  return {
    tables,
    port: 8000,
  };

So basically just remove any tables with StreamSpecification in your jest dynamodb config, not the best but works.

[hugoduraes]

@jordanmaxfightcamp if you need streams, instead of deleting StreamSpecification you'll need to do this instead:

tables = tables.map(table => {
  if (table.StreamSpecification) {
    table.StreamSpecification = {
      ...table.StreamSpecification,
      StreamEnabled: true,
    };
  }

  return table;
})

https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_StreamSpecification.html
According to this, StreamEnabled is a required property.