This is repository containing source code for blog post at https://stefan-majiros.com/blog/custom-graphql-batchgetitem-resolver-in-aws-amplify-for-appsync/ that demonstrates implementation of BatchGetItem resolvers for one or multi-tables (DynamoDB).
Written by stefanmajiros (@stefanmajiros at Twitter).
p.s: If you need, you can hire me to work on project that is using React Native and AWS Amplify.