chore: Getting in the action builder

lib/actions/createAction.ts

@@ -0,0 +1,43 @@
+import {
+  ActionMetaData,
+  ActionResult,
+  Effects,
+  ExportedAction,
+} from "../types";
+import { Utils, utils } from "../util";
+
+export class CreatedAction<WrapperData, Input> {
+  private constructor(
+    readonly metaData: ActionMetaData,
+    readonly fn: (options: {
+      effects: Effects;
+      utils: Utils<WrapperData>;
+      input: Input;
+    }) => Promise<ActionResult>,
+  ) {}
+
+  static of<WrapperData, Input>(
+    metaData: ActionMetaData,
+    fn: (options: {
+      effects: Effects;
+      utils: Utils<WrapperData>;
+      input: Input;
+    }) => Promise<ActionResult>,
+  ) {
+    return new CreatedAction<WrapperData, Input>(metaData, fn);
+  }
+
+  exportedAction: ExportedAction = ({ effects, input }) => {
+    return this.fn({
+      effects,
+      utils: utils<WrapperData>(effects),
+      input: input as Input,
+    });
+  };
+
+  async exportAction(effects: Effects) {
+    await effects.exportAction(this.metaData);
+  }
+}
+
+export const createAction = CreatedAction.of;