Enable DynamoDB's string set scalar type in your AWS Amplify API!

graphql-stringset-transformer

Installation

npm install --save graphql-stringset-transformer

How to use

Setup custom transformer

Edit amplify/backend/api/<YOUR_API>/transform.conf.json and append "graphql-stringset-transformer" to the transformers field.

"transformers": [
    "graphql-stringset-transformer"
]

Use @stringSet directive

Append @stringSet to target fields.

type ExpiringChatMessage @model {
  id: ID!
  message: String
  groups: [String]! @stringSet
}

It is important that the field you use the directive is of type String

Development

1. Clone this repository and open it in your code editor.
2. Run npm link in the cloned project directory and npm link graphql-stringset-transformer in your test project where you want to use it. Maybe you'll have to uninstall the previously installed dependency as installed from NPM repository.
3. Run npm start in your cloned project directory. Every code change is now immediately used in your test project, so you can just modify code and test it using amplify codegen models or amplify push.

Hint: It is important to always make sure the version of the installed graphql dependency matches the graphql version the graphql-transformer-core depends on.

Publish new NPM package version

1. Make sure version number is updated.
2. Run npm publish.
3. Create new release in GitHub including a tag.

License

The MIT License