Merge pull request #1 from StatesTitle/mdoliner-st/Add_a_StructLike_c…

…lass_that_extends_Error

I'm merging this change into the all_states_title_changes branch. For the full PR description see [the PR for merging this change into Credit Karma's master branch](creditkarma#132).

packages/thrift-server-core/src/main/types.ts

@@ -86,6 +86,22 @@ export abstract class StructLike implements IStructLike {
     public abstract write(output: TProtocol): void
 }
 
+/**
+ * Like `StructLike` but extends `Error`. Exception classes extend this.
+ */
+export abstract class ErrorStructLike extends Error implements IStructLike {
+    public readonly name: string
+    public readonly _annotations: IThriftAnnotations = {}
+    public readonly _fieldAnnotations: IFieldAnnotations = {}
+
+    constructor() {
+        super()
+        this.name = this.constructor.name
+    }
+
+    public abstract write(output: TProtocol): void
+}
+
 export interface IStructConstructor<T extends StructLike> {
     new (args?: any): T
     read(input: TProtocol): T