Generating GraphQL Apollo types in React Native

I am currently using:

  • Neo4J version 4.2
  • Apollo server
  • GraphQL and @neo4j/graphql (to auto-generate Neo4J types from schema.graphql)
  • Expo React Native with Apollo Client
  • TypeScript

I wanted to create TypeScript types for my GraphQL queries by following the steps outlined in this guide.

The default setup of apollo-cli searches within the ./src folder, but in React Native, all files are located in the root directory. So, when attempting to modify the includes configuration for Apollo client as follows:

<root>/apollo.config.js

module.exports = {
  client: {
    includes: ['**/*.{ts,tsx}'],
  },
};

After executing:

> apollo codegen:generate --endpoint=http://localhost:4001/ --target=typescript --tagName=gql

The output was an error:

Error: Error initializing Apollo GraphQL project "Unnamed Project": Error: Error in "Loading queries for Unnamed Project": Error: ️️There are multiple definitions for the `OpName` operation. Please rename or remove all operations with the duplicated name before continuing.

Answer №1

After spending countless hours troubleshooting, I was able to resolve this issue by implementing the following configuration:

module.exports = {
  client: {
    includes: ['graphql/**/*.ts'],
  },
};

It appears that apollo-cli detected gql tags within the React Native generated code.

P.S. I purposely included specific keywords in hopes that Google will direct users facing similar challenges to this solution.

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