Added the node modules.

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

@@ -0,0 +1,21 @@
+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);
+        }
+    }
+}