Apollo Link HTTP Common Utilities

Common errors

Warnings

Install

Imports

• selectHttpOptionsAndBody
  wrong

  const { selectHttpOptionsAndBody } = require('apollo-link-http-common');

  correct

  import { selectHttpOptionsAndBody } from 'apollo-link-http-common'

  This package is not intended for direct end-user consumption. Use ESM-style imports if absolutely necessary for internal development, but migration to @apollo/client is recommended.

• parseAndCheckHttpResponse
  wrong

  import parseAndCheckHttpResponse from 'apollo-link-http-common';

  correct

  import { parseAndCheckHttpResponse } from 'apollo-link-http-common'

  This is a named export, not a default. The package is generally deprecated, and these utilities are now found within @apollo/client.

• serializeFetchParameter
  wrong

  const serializeFetchParameter = require('apollo-link-http-common').serializeFetchParameter;

  correct

  import { serializeFetchParameter } from 'apollo-link-http-common'

  Primarily for internal use by other `apollo-link` packages. Direct use is discouraged due to the package's deprecated status and unstable API.

Quickstart

This example demonstrates how an internal utility like `parseAndCheckHttpResponse` from `apollo-link-http-common` would process a mock HTTP response into a GraphQL result. It highlights the package's internal, lower-level role in handling network responses, not its direct use in creating an Apollo Link. This package is deprecated; for actual Apollo Client HTTP networking, use `@apollo/client/link/http`.

import { parseAndCheckHttpResponse } from 'apollo-link-http-common';
import { print } from 'graphql';

const mockOperation = {
  query: print(`query GetGreeting { greeting }`),
  variables: {},
  operationName: 'GetGreeting',
  extensions: {}
};

async function handleMockResponse() {
  // This is a simplified example demonstrating an internal utility function.
  // In a real scenario, you'd have a 'Response' object from a fetch call.
  const mockResponse = new Response(JSON.stringify({
    data: { greeting: 'Hello World!' }
  }), {
    status: 200,
    headers: { 'Content-Type': 'application/json' }
  });

  try {
    const result = await parseAndCheckHttpResponse(mockOperation, mockResponse);
    console.log('Parsed GraphQL result:', result);
  } catch (error) {
    console.error('Error parsing response:', error);
  }
}

handleMockResponse();