1 files changed, 37 insertions, 0 deletions
diff --git a/src/lib/stores/response_builder.ts b/src/lib/stores/response_builder.ts
new file mode 100644
index 0000000..1e12243
--- /dev/null
+++ b/src/lib/stores/response_builder.ts
@@ -0,0 +1,37 @@
+/**
+ * Utilities to build responses
+ */
+
+interface AnyError {
+  message: string
+};
+
+export type StoreState<Type> = {
+	loading: boolean;
+	data: Type | void;
+	error: AnyError | void;
+};
+
+export function initialResponse<T> (initialState: T): StoreState<T> {
+  return {
+    loading: true,
+    data: initialState,
+    error: undefined
+  };
+}
+
+export function errorResponse<T> (error: AnyError): StoreState<T> {
+  return {
+    loading: false,
+    data: undefined,
+    error
+  };
+}
+
+export function response<T> (data: T): StoreState<T> {
+  return {
+    loading: false,
+    data,
+    error: undefined
+  };
+}