Incompatible with Jest 28+ #634
Description
When using a project configured to use the jest transformer (i.e.):
transform: {
'\\.(gql|graphql)$': [
'graphql-let/jestTransformer'
],
}
Updating past Jest 28 will throw the following error on a line that imports a graphql file:
Invalid return value:
`process()` or/and `processAsync()` method of code transformer found at
"/root/repo/node_modules/jest-transform-graphql/index.js"
should return an object or a Promise resolving to an object. The object
must have `code` property with a string of processed code.
This error may be caused by a breaking change in Jest 28:
https://jestjs.io/docs/upgrading-to-jest28#transformer
Code Transformation Documentation:
https://jestjs.io/docs/code-transformation