feat(util): adds an util to resolve all promises contained within an object

Author: iccicci

Diff for: packages/util/src/index.ts

@@ -13,3 +13,5 @@ export * from './logging';
 export * from './RunnableModule';
 export * from './opaqueTypes';
 export * from './environment';
+
+export { PromiseOrValue, resolveObjectValues } from './util';

Diff for: packages/util/src/util.ts

@@ -0,0 +1,8 @@
+export type PromiseOrValue<T> = Promise<T> | T;
+
+export const resolveObjectValues = async <T>(obj: { [k: string]: PromiseOrValue<T> }): Promise<{ [k: string]: T }> =>
+  Object.fromEntries(
+    await Promise.all(
+      Object.entries(obj).map(([key, promise]) => Promise.resolve(promise).then((value) => [key, value]))
+    )
+  );

Diff for: packages/util/test/util.test.ts

@@ -0,0 +1,15 @@
+import { resolveObjectValues } from '../src';
+
+describe('util', () => {
+  describe('resolveObjectValues', () => {
+    it('resolves all object values which are promises', async () => {
+      const result = await resolveObjectValues({
+        first: 1,
+        second: Promise.resolve(2),
+        third: new Promise<number>((resolve) => setTimeout(() => resolve(3), 10))
+      });
+
+      expect(result).toEqual({ first: 1, second: 2, third: 3 });
+    });
+  });
+});