async function fetchRelay()

in issue-tracker/src/RelayEnvironment.js [8:52]
34 lines of code
4 McCabe index (conditional complexity)

async function fetchRelay(params, variables, _cacheConfig) {
  // Check that the auth token is configured
  const REACT_APP_GITHUB_AUTH_TOKEN = process.env.REACT_APP_GITHUB_AUTH_TOKEN;
  if (
    REACT_APP_GITHUB_AUTH_TOKEN == null ||
    REACT_APP_GITHUB_AUTH_TOKEN === ''
  ) {
    throw new Error(
      'This app requires a GitHub authentication token to be configured. See readme.md for setup details.',
    );
  }

  // Fetch data from GitHub's GraphQL API:
  const response = await fetch('https://api.github.com/graphql', {
    method: 'POST',
    headers: {
      Authorization: `bearer ${REACT_APP_GITHUB_AUTH_TOKEN}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      query: params.text,
      variables,
    }),
  });

  // Get the response as JSON
  const json = await response.json();

  // GraphQL returns exceptions (for example, a missing required variable) in the "errors"
  // property of the response. If any exceptions occurred when processing the request,
  // throw an error to indicate to the developer what went wrong.
  if (Array.isArray(json.errors)) {
    console.log(json.errors);
    throw new Error(
      `Error fetching GraphQL query '${
        params.name
      }' with variables '${JSON.stringify(variables)}': ${JSON.stringify(
        json.errors,
      )}`,
    );
  }

  // Otherwise, return the full payload.
  return json;
}