apollo-error-converter/lib/utils/create-apollo-error.js

Global Apollo Server Error handling made easy. Remove verbose and repetitive resolver / data source Error handling. Ensures no implementation details are ever leaked while preserving internal Error logging.

const { toApolloError } = require("apollo-server-core");
const { defaultFallback } = require("../core/constants");

/**
 * Extracts and shapes the arguments for formatting the Error
 *
 * defaults:
 * - data = null
 * - code = 'INTERNAL_SERVER_ERROR'
 * @param {GraphQLError} error GraphQL Error from formatError
 * @param {MapItem} mapItem MapItem to parse
 * @returns {[object]} arguments list
 */
function createApolloError(graphQLError, mapItem) {
  const { originalError, path, locations } = graphQLError;
  const { message, data = {}, code = defaultFallback.code } = mapItem;

  return toApolloError(
    {
      path,
      message,
      locations,
      extensions: {
        data: typeof data === "function" ? data(originalError) : data,
      },
    },
    code,
  );
}

module.exports = createApolloError;