@octokit/graphql/dist-src/error.js

function _buildMessageForResponseErrors(data) {
    return (`Request failed due to following response errors:\n` +
        data.errors.map((e) => ` - ${e.message}`).join("\n"));
}
export class GraphqlResponseError extends Error {
    constructor(request, headers, response) {
        super(_buildMessageForResponseErrors(response));
        this.request = request;
        this.headers = headers;
        this.response = response;
        this.name = "GraphqlResponseError";
        // Expose the errors and response data in their shorthand properties.
        this.errors = response.errors;
        this.data = response.data;
        // Maintains proper stack trace (only available on V8)
        /* istanbul ignore next */
        if (Error.captureStackTrace) {
            Error.captureStackTrace(this, this.constructor);
        }
    }
}