Update yarn scripts

lib/ErrorMessage.js

@@ -0,0 +1,31 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const GithubError_1 = require("./GithubError");
+class ErrorMessage {
+    constructor(error) {
+        this.error = error;
+    }
+    toString() {
+        const message = this.error.message;
+        const errors = this.githubErrors();
+        if (errors.length > 0) {
+            return `${message}\nErrors:\n${this.errorBulletedList(errors)}`;
+        }
+        else {
+            return message;
+        }
+    }
+    githubErrors() {
+        const errors = this.error.errors;
+        if (errors instanceof Array) {
+            return errors.map((err) => new GithubError_1.GithubError(err));
+        }
+        else {
+            return [];
+        }
+    }
+    errorBulletedList(errors) {
+        return errors.map((err) => `- ${err}`).join("\n");
+    }
+}
+exports.ErrorMessage = ErrorMessage;