Storefront API Client

The Storefront API Client manages the API's authentication information and provides various methods that enables devs to interacts with the API.

Getting started

Using your preferred package manager, install this package in a project:

yarn add @shopify/storefront-api-client

npm install @shopify/storefront-api-client --s

pnpm add @shopify/storefront-api-client

CDN

The UMD builds of each release version are available via the unpkg CDN

// The minified `0.2.3` version of the Storefront API Client
<script src="https://unpkg.com/@shopify/[email protected]/dist/umd/storefront-api-client.min.js"></script>

<script>
  const client = ShopifyStorefrontAPIClient.createStorefrontApiClient({...});
</script>

Initialization

Public access token client initialization

import {createStorefrontApiClient} from '@shopify/storefront-api-client';

const client = createStorefrontApiClient({
  storeDomain: 'http://your-shop-name.myshopify.com',
  apiVersion: '2023-10',
  publicAccessToken: 'your-storefront-public-access-token',
});

Create a server enabled client using a private access token and a custom Fetch API

[!WARNING] Private Storefront API delegate access tokens should only be used in server-to-server implementations and not within a browser environment.

In order to use the client within a server, a server enabled JS Fetch API will need to be provided to the client at initialization.

import {
  createStorefrontApiClient,
  CustomFetchApi,
} from '@shopify/storefront-api-client';
import {fetch as nodeFetch} from 'node-fetch';

const client = createStorefrontApiClient({
  storeDomain: 'http://your-shop-name.myshopify.com',
  apiVersion: '2023-10',
  privateAccessToken: 'your-storefront-private-access-token',
  customFetchApi: nodeFetch,
});

createStorefrontApiClient() parameters

| Property | Type | Description | | ------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | storeDomain | string | The domain of the store. It can be the Shopify myshopify.com domain or a custom store domain. | | apiVersion | string | The requested Storefront API version | | publicAccessToken? | string | Storefront API public access token. Either publicAccessToken or privateAccessToken must be provided at initialization. | | privateAccessToken? | string | Storefront API private access token. Either publicAccessToken or privateAccessToken must be provided at initialization. Important: Storefront API private delegate access tokens should only be used in a server-to-server implementation. | | clientName? | string | Name of the client | | retries? | number | The number of HTTP request retries if the request was abandoned or the server responded with a Too Many Requests (429) or Service Unavailable (503) response. Default value is 0. Maximum value is 3. | | customFetchAPI? | (url: string, init?: {method?: string, headers?: HeaderInit, body?: string}) => Promise<Response> | A replacement fetch function that will be used in all client network requests. By default, the client uses window.fetch(). | | logger? | (logContent: UnsupportedApiVersionLog \|HTTPResponseLog\|HTTPRetryLog) => void | A logger function that accepts log content objects. This logger will be called in certain conditions with contextual information. |

Client properties

| Property | Type | Description | | ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | config | StorefrontApiClientConfig | Configuration for the client | | getHeaders | (headers?: Record<string, string \| string[]>) => Record<string, string \| string[]> | Returns Storefront API specific headers needed to interact with the API. If additional headers are provided, the custom headers will be included in the returned headers object. | | getApiUrl | (apiVersion?: string) => string | Returns the shop specific API url. If an API version is provided, the returned URL will include the provided version, else the URL will include the API version set at client initialization. | | fetch | (operation: string, options?: ApiClientRequestOptions) => Promise<Response> | Fetches data from Storefront API using the provided GQL operation string and ApiClientRequestOptions object and returns the network response. | | request | <TData>(operation: string, options?: ApiClientRequestOptions) => Promise<ClientResponse<TData>> | Requests data from Storefront API using the provided GQL operation string and ApiClientRequestOptions object and returns a normalized response object. | | requestStream | <TData>(operation: string, options?: RequestOptions) => Promise <AsyncIterator<ClientStreamResponse<TData>>> | Fetches GQL operations (eg. @defer directive) that can result in a streamed response from the Storefront API . The function returns an async iterator and the iterator will return normalized stream response objects as data becomes available through the stream. |

StorefrontApiClientConfig properties

| Name | Type | Description | | ------------------ | ------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------- | | storeDomain | string | The secure store domain | | apiVersion | string | The Storefront API version to use in the API request | | publicAccessToken | string \| never | The provided public access token. If privateAccessToken was provided, publicAccessToken will not be available. | | privateAccessToken | string \| never | The provided private access token. If publicAccessToken was provided, privateAccessToken will not be available. | | headers | Record<string, string \| string[]> | The headers generated by the client during initialization | | apiUrl | string | The API URL generated from the provided store domain and api version | | clientName? | string | The provided client name | | retries? | number | The number of retries the client will attempt when the API responds with a Too Many Requests (429) or Service Unavailable (503) response |

ApiClientRequestOptions properties

| Name | Type | Description | | ----------- | ------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | variables? | Record<string, any> | Variable values needed in the graphQL operation | | apiVersion? | string | The Storefront API version to use in the API request | | headers? | Record<string, string \| string[]> | Customized headers to be included in the API request | | retries? | number | Alternative number of retries for the request. Retries only occur for requests that were abandoned or if the server responds with a Too Many Request (429) or Service Unavailable (503) response. Minimum value is 0 and maximum value is 3. |

ClientResponse<TData>

| Name | Type | Description | | ----------- | ----------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | data? | TData \| any | Data returned from the Storefront API. If TData was provided to the function, the return type is TData, else it returns type any. | | errors? | ResponseErrors | Errors object that contains any API or network errors that occured while fetching the data from the API. It does not include any UserErrors. | | extensions? | Record<string, any> | Additional information on the GraphQL response data and context. It can include the context object that contains the context settings used to generate the returned API response. |

ClientStreamResponse<TData>

| Name | Type | Description | | ----------- | ----------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | data? | TData \| any | Currently available data returned from the Storefront API. If TData was provided to the function, the return type is TData, else it returns type any. | | errors? | ResponseErrors | Errors object that contains any API or network errors that occured while fetching the data from the API. It does not include any UserErrors. | | extensions? | Record<string, any> | Additional information on the GraphQL response data and context. It can include the context object that contains the context settings used to generate the returned API response. | | hasNext | boolean | Flag to indicate whether the response stream has more incoming data |

ResponseErrors

| Name | Type | Description | | ------------------ | ---------- | --------------------------------------------------- | | networkStatusCode? | number | HTTP response status code | | message? | string | The provided error message | | graphQLErrors? | any[] | The GraphQL API errors returned by the server | | response? | Response | The raw response object from the network fetch call |

Client request() response examples

API response

{
  "data": {
    "product": {
      "id": "gid://shopify/Product/12345678912",
      "title": "Sample product # 1"
    }
  },
  "extensions": {
    "context": {
      "country": "US",
      "language": "EN"
    }
  }
}

Network error

{
  "errors": {
    "networkStatusCode": 401,
    "message": ""
  }
}

Storefront API graphQL error

{
  "errors": {
    "networkStatusCode": 200,
    "message": "An error occurred while fetching from the API. Review the `graphQLErrors` object for details.",
    "graphQLErrors": [
      {
        "message": "Field 'testField' doesn't exist on type 'Product'",
        "locations": [
          {
            "line": 17,
            "column": 3
          }
        ],
        "path": ["fragment ProductFragment", "testField"],
        "extensions": {
          "code": "undefinedField",
          "typeName": "Product",
          "fieldName": "testField"
        }
      }
    ]
  }
}

Usage examples

Query for a product

const productQuery = `
  query ProductQuery($handle: String) {
    product(handle: $handle) {
      id
      title
      handle
    }
  }
`;

const {data, errors, extensions} = await client.request(productQuery, {
  variables: {
    handle: 'sample-product',
  },
});

Query for product info using the @defer directive

const productQuery = `
  query ProductQuery($handle: String) {
    product(handle: $handle) {
      id
      handle
      ... @defer(label: "deferredFields") {
        title
        description
      }
    }
  }
`;

const responseStream = await client.requestStream(productQuery, {
  variables: {handle: 'sample-product'},
});

// await available data from the async iterator
for await (const response of responseStream) {
  const {data, errors, extensions, hasNext} = response;
}

Create a localized cart

const cartCreateMutation = `
  mutation ($input: CartInput!, $country: CountryCode, $language: LanguageCode)
  @inContext(country: $country, language: $language) {
    cartCreate(input: $input) {
      userErrors {
        message
        code
        field
      }
      cart {
        id
        checkoutUrl
      }
    }
  }
`;

const {data, errors, extensions} = await client.request(cartCreateMutation, {
  variables: {
    input: {},
    country: 'JP',
    language: 'JA',
  },
});

Query for shop information

const shopQuery = `
  query shop {
    shop {
      name
      id
    }
  }
`;

const {data, errors, extensions} = await client.request(shopQuery);

Dynamically set the Storefront API version per request

const productQuery = `
  query ProductQuery($handle: String) {
    product(handle: $handle) {
      id
      title
      handle
    }
  }
`;

const {data, errors, extensions} = await client.request(productQuery, {
  variables: {
    handle: 'sample-product',
  },
  apiVersion: '2023-07',
});

Add custom headers to API request

const productQuery = `
  query ProductQuery($handle: String) {
    product(handle: $handle) {
      id
      title
      handle
    }
  }
`;

const {data, errors, extensions} = await client.request(productQuery, {
  variables: {
    handle: 'sample-product',
  },
  headers: {
    'Shopify-Storefront-Id': 'shop-id',
  },
});

Dynamically set the number of retries per request

const productQuery = `
  query ProductQuery($handle: String) {
    product(handle: $handle) {
      id
      title
      handle
    }
  }
`;

const {data, errors, extensions} = await client.request(productQuery, {
  variables: {
    handle: 'sample-product',
  },
  retries: 2,
});

Provide GQL query type to client.request() and client.requestStream()

import {print} from 'graphql/language';

// GQL operation types are usually auto generated during the application build
import {CollectionQuery, CollectionDeferredQuery} from 'types/appTypes';
import collectionQuery from './collectionQuery.graphql';
import collectionDeferredQuery from './collectionDeferredQuery.graphql';

const {data, errors, extensions} = await client.request<CollectionQuery>(
  print(collectionQuery),
  {
    variables: {
      handle: 'sample-collection',
    },
  },
);

const responseStream = await client.requestStream<CollectionDeferredQuery>(
  print(collectionDeferredQuery),
  {
    variables: {handle: 'sample-collection'},
  },
);

Using client.fetch() to get API data

const shopQuery = `
  query shop {
    shop {
      name
      id
    }
  }
`;

const response = await client.fetch(shopQuery);

if (response.ok) {
  const {errors, data, extensions} = await response.json();
}

Typing variables and return objects

This client is compatible with the @shopify/api-codegen-preset package. You can use that package to create types from your operations with the Codegen CLI.

There are different ways to configure codegen with it, but the simplest way is to:

1. Add the preset package as a dev dependency to your project, for example:

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

2. Create a .graphqlrc.ts file in your root containing:

   import {ApiType, shopifyApiProject} from '@shopify/api-codegen-preset';
   
   export default {
     schema: 'https://shopify.dev/storefront-graphql-direct-proxy',
     documents: ['*.ts', '!node_modules'],
     projects: {
       default: shopifyApiProject({
         apiType: ApiType.Storefront,
         apiVersion: '2023-10',
         outputDir: './types',
       }),
     },
   };

3. Add "graphql-codegen": "graphql-codegen" to your scripts section in package.json.

4. Tag your operations with #graphql, for example:

   const {data, errors, extensions} = await client.request(
     `#graphql
     query Shop {
       shop {
         name
       }
     }`,
   );
   console.log(data?.shop.name);

5. Run npm run graphql-codegen to parse the types from your operations.

[!NOTE] Remember to ensure that your tsconfig includes the files under ./types!

Once the script runs, it'll create the file ./types/storefront.generated.d.ts. When TS includes that file, it'll automatically cause the client to detect the types for each query.

Log Content Types

UnsupportedApiVersionLog

This log content is sent to the logger whenever an unsupported API version is provided to the client.

| Property | Type | Description | | -------- | ------------------------------------------------------ | ---------------------------------------------------------------------------------------------------- | | type | LogType['Unsupported_Api_Version'] | The type of log content. Is always set to Unsupported_Api_Version | | content | {apiVersion: string, supportedApiVersions: string[]} | Contextual info including the provided API version and the list of currently supported API versions. |

HTTPResponseLog

This log content is sent to the logger whenever a HTTP response is received by the client.

| Property | Type | Description | | -------- | ------------------------------------------------------------------------- | ----------------------------------------------------------- | | type | LogType['HTTP-Response'] | The type of log content. Is always set to HTTP-Response | | content | {requestParams: [url, init?], response: Response} | Contextual data regarding the request and received response |

HTTPRetryLog

This log content is sent to the logger whenever the client attempts to retry HTTP requests.

| Property | Type | Description | | -------- | ------------------------------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | type | LogType['HTTP-Retry'] | The type of log content. Is always set to HTTP-Retry | | content | {requestParams: [url, init?], lastResponse?: Response, retryAttempt: number, maxRetries: number} | Contextual data regarding the upcoming retry attempt. requestParams: parameters used in the requestlastResponse: previous response retryAttempt: the current retry attempt count maxRetries: the maximum number of retries |

RequestParams

| Property | Type | Description | | -------- | -------------------------------------------------------- | ----------------------- | | url | string | Requested URL | | init? | {method?: string, headers?: HeaderInit, body?: string} | The request information |