Working with GraphQL Tools

1. Using GraphQL Code Generator

Example: codegen.ts

import type { CodegenConfig } from "@graphql-codegen/cli";

const config: CodegenConfig = {
  schema: "http://localhost:4000/graphql",
  documents: "src/**/*.graphql",
  generates: {
    "src/gql/": { preset: "client", plugins: [] }
  }
};
export default config;

2. Generating TypeScript Types

PluginOutput
typescriptType defs from schema
typescript-operationsPer-document types
typescript-resolversResolver function signatures
client-presettyped-document-node + fragment masking

3. Using Apollo CLI

ToolDetail
RoverModern Apollo CLI (replaces apollo CLI)
rover graph publishPush schema to Studio
rover subgraph checkValidate against operation traffic
rover supergraph composeCompose locally

4. Using GraphQL Inspector

CommandDetail
diffSchema breaking-change report
validateOperations against schema
coverageSchema field coverage by ops
similarFind duplicate types

5. Using GraphQL ESLint

Example: ESLint config

{
  overrides: [{
    files: ["*.graphql"],
    parser: "@graphql-eslint/eslint-plugin",
    plugins: ["@graphql-eslint"],
    rules: {
      "@graphql-eslint/naming-convention": "error",
      "@graphql-eslint/no-deprecated": "warn",
      "@graphql-eslint/require-description": "warn"
    }
  }]
}

6. Generating SDK from Schema

ToolOutput
graphql-request + codegenTyped SDK class
genqlType-safe query builder
gqty / HoudiniSchema-first runtime

7. Using Relay Compiler

StepDetail
Installnpm i relay-compiler
Runrelay-compiler --watch
OutputGenerated artifacts in __generated__

8. Using GraphQL Config

Example: graphql.config.ts

export default {
  schema: "schema.graphql",
  documents: "src/**/*.{ts,tsx,graphql}",
  extensions: {
    codegen: { generates: { "src/gql/": { preset: "client" } } }
  }
};

9. Using GraphQL Voyager

UseDetail
VisualizationType relationship graph
EmbedReact component or hosted app
Skip relationsHide root types for clarity

10. Using GraphQL Editor

FeatureDetail
Visual schema designDrag-and-drop type building
Mock backendAuto-generated mock server
DocumentationBuilt-in docs view