GraphQL webpack loader

The GraphQL webpack loader transforms your queries from .gql files into JavaScript modules, along with their corresponding declaration files (.d.ts), utilizing your generated TypeScript GraphQL schema model. To view the generated result, refer to the test snapshot.

And in your JavaScript:

import GqlQuery from 'query.gql'

Install

npm install --save-dev gql-webpack-loader

or

yarn add gql-webpack-loader

Webpack configuration

{
    test: /\.(graphql|gql)$/,
    exclude: /node_modules/,
    loader: "gql-webpack-loader",
    options: {
        gqlSchemaPath: path.resolve(__dirname, '../fixtures/schema.ts'),
        declaration: true,    
        mutationInterfaceName: 'MutationModel',
        queryInterfaceName: 'QueryModel',
        variableInterfaceRe: (operationNode, fieldName) =>
            // This used by default 
            new RegExp(`(${operation.operation})(${fieldName + operation.fieldOperationName})argsmodel`, 'gmi')
    }    
}

Config

1. declaration

Type: boolean

Whether generate corresponding declaration (d.ts) file for generated module.

2. gqlSchemaPath

Type: string

Required if declaration is true

Path to TypeScript GraphQL schema. You can generate TypeScript schema with the next libraries

• https://github.com/victorgarciaesgi/simple-graphql-to-typescript
• https://github.com/dotansimha/graphql-code-generator

3. mutationInterfaceName

Type: string

Required if declaration is true

Name of your mutation model.

4. queryInterfaceName

Type: string

Required if declaration is true

Name of your query model

5. variableInterfaceRe

Type: (node: OperationNode) => RegExp

Optional

A function that takes an operation node as input and returns a regular expression to validate variable imports. If no variable model is found, { [key: string]: any } will be used.

5. exportNameBy

Type: (fileName: string) => string

Optional

A function that takes a fileName as input and returns a name for the export clause in both the GraphQL JS module and its declaration.

Declaration usage

// you should provide GraphQL execution function & the result type
type Result<T = any> = {
    data?: T;
    errors?: Error[];
}

const execute = <T = any, V = Record<string, any>>(module: GqlModule<T, V>, variables?: V): Promise<Result<V>> => {
  // your graphql query execution implementation
}

// and later in your code
import GqlQuery from 'query.gql'
execute(GqlQuery.operation).then((response) =>
    // response will have a type information about your GraphQl query
    response.data.operation    
)