@shopify/api-codegen-preset v0.0.7

@shopify/api-codegen-preset

This package enables JavaScript / TypeScript apps to use a #graphql tag to parse queries with graphql-codegen.

It produces TypeScript types for every query picked up by your codegen configuration. Shopify's clients are then able to use those types to automatically type your operation's variables and return types.

Getting started

The first step is to install the @shopify/api-codegen-preset package, using your preferred package manager:

yarn add --dev @shopify/api-codegen-preset

npm add --save-dev @shopify/api-codegen-preset

pnpm add -D @shopify/api-codegen-preset

Configuration

This package provides 3 key exports, that make it increasingly easier to set up a project:

1. preset: provides the low-level implementation that converts the schema into types. Include this in a generates step.
2. shopifyApiTypes: provides all the generates steps needed for a project.
3. shopifyApiProject: one-stop-shop setup for an entire codegen project.

preset

Use this as a Codegen preset inside a generates step. This gives you complete control over your configuration if you want to set up a fully custom scenario.

Example .graphqlrc.ts file

import { ApiType, pluckConfig, preset } from "@shopify/api-codegen-preset";

export default {
  // For syntax highlighting / auto-complete when writing operations
  schema: "https://shopify.dev/admin-graphql-direct-proxy",
  documents: ["./**/*.{js,ts,jsx,tsx}"],
  projects: {
    default: {
      // For type extraction
      schema: "https://shopify.dev/admin-graphql-direct-proxy",
      documents: ["./**/*.{js,ts,jsx,tsx}"],
      extensions: {
        codegen: {
          // Enables support for `#graphql` tags, as well as `/* GraphQL */`
          pluckConfig,
          generates: {
            "./types/admin.schema.json": {
              plugins: ["introspection"],
              config: { minify: true },
            },
            "./types/admin.types.d.ts": {
              plugins: ["typescript"],
            },
            "./types/admin.generated.d.ts": {
              preset,
              presetConfig: {
                apiType: ApiType.Admin,
              },
            },
          },
        },
      },
    },
  },
};

shopifyApiTypes

This function creates the appropriate generates steps for a project. Use this function if you want to configure a custom project, or add your own generates steps.

Example .graphqlrc.ts file

import {
  ApiType,
  pluckConfig,
  shopifyApiTypes,
} from "@shopify/api-codegen-preset";

export default {
  // For syntax highlighting / auto-complete when writing operations
  schema: "https://shopify.dev/admin-graphql-direct-proxy/2023-10",
  documents: ["./app/**/*.{js,ts,jsx,tsx}"],
  projects: {
    // To produce variable / return types for Admin API operations
    schema: "https://shopify.dev/admin-graphql-direct-proxy/2023-10",
    documents: ["./app/**/*.{js,ts,jsx,tsx}"],
    extensions: {
      codegen: {
        pluckConfig,
        generates: shopifyApiTypes({
          apiType: ApiType.Admin,
          apiVersion: "2023-10",
          documents: ["./app/**/*.{js,ts,jsx,tsx}"],
          outputDir: "./app/types",
        }),
      },
    },
  },
};

shopifyApiProject

This function creates a fully-functional project configuration.

Example .graphqlrc.ts file

import { shopifyApiProject, ApiType } from "@shopify/api-codegen-preset";

export default {
  // For syntax highlighting / auto-complete when writing operations
  schema: "https://shopify.dev/admin-graphql-direct-proxy/2023-10",
  documents: ["./app/**/*.{js,ts,jsx,tsx}"],
  projects: {
    // To produce variable / return types for Admin API operations
    default: shopifyApiProject({
      apiType: ApiType.Admin,
      apiVersion: "2023-10",
      documents: ["./app/**/*.{js,ts,jsx,tsx}"],
      outputDir: "./app/types",
    }),
  },
};

Generating types

Once you configure your app, you can run graphql-codegen to start parsing your queries for types.

To do that, add this script to your package.json file:

{
  "scripts": {
    // ...
    "graphql-codegen": "graphql-codegen"
  }
}

You can then run the script using your package manager:

yarn graphql-codegen

npm run graphql-codegen

pnpm run graphql-codegen

!NOTE Codegen will fail if it can't find any documents to parse. To fix that, either create a query or set the ignoreNoDocuments option to true. Queries and mutations must have a name for the parsing to work.

Once the script parses your operations, you can mark any operations for parsing by adding the #graphql tag to the string. For example:

import "../types/admin.generated.d.ts";

const response = await myGraphqlClient.graphql(
  `#graphql
  query getProducts($first: Int!) {
    products(first: $first) {
      edges {
        node {
          id
          handle
        }
      }
    }
  }`,
  {
    variables: {
      first: 1,
    } as GetProductsQueryVariables,
  }
);

const data: GetProductsQuery = response.data;

You'll note that once the script parses this query, the admin.generated.d.ts file will start including a new GetProductsQuery type that maps to your query.

You can commit these types to your repository, so that you don't have to re-run the parsing script every time.

To make your development flow faster, you can pass in the --watch flag to update the query types whenever you save a file:

npm run graphql-codegen -- --watch