Fixes #6 Add support for updating releases

src/ErrorMessage.ts

@@ -1,23 +1,15 @@
 import { GithubError } from "./GithubError"
 
 export class ErrorMessage {
-    error: any
+    private error: any
+    private githubErrors: GithubError[]
 
     constructor(error: any) {
         this.error = error
+        this.githubErrors = this.generateGithubErrors()
     }
 
-    toString(): string {
-        const message = this.error.message
-        const errors = this.githubErrors()
-        if (errors.length > 0) {
-            return `${message}\nErrors:\n${this.errorBulletedList(errors)}`
-        } else {
-            return message
-        }
-    }
-
-    githubErrors(): GithubError[] {
+    private generateGithubErrors(): GithubError[] {
         const errors = this.error.errors
         if (errors instanceof Array) {
             return errors.map((err) => new GithubError(err))
@@ -26,7 +18,21 @@ export class ErrorMessage {
         }
     }
 
-    errorBulletedList(errors: GithubError[]): string {
+    hasErrorWithCode(code: String): boolean {
+        return this.githubErrors.some((err) => err.code == code)
+    }
+
+    toString(): string {
+        const message = this.error.message
+        const errors = this.githubErrors
+        if (errors.length > 0) {
+            return `${message}\nErrors:\n${this.errorBulletedList(errors)}`
+        } else {
+            return message
+        }
+    }
+
+    private errorBulletedList(errors: GithubError[]): string {
         return errors.map((err) => `- ${err}`).join("\n")
     }
 }