feat: add promiseTimeout (#223)

superset-frontend/temporary_superset_ui/superset-ui/packages/superset-ui-core/src/index.ts

@@ -8,5 +8,6 @@ export { default as convertKeysToCamelCase } from './utils/convertKeysToCamelCas
 export { default as isDefined } from './utils/isDefined';
 export { default as isRequired } from './utils/isRequired';
 export { default as makeSingleton } from './utils/makeSingleton';
+export { default as promiseTimeout } from './utils/promiseTimeout';
 
 export * from './types';

superset-frontend/temporary_superset_ui/superset-ui/packages/superset-ui-core/src/utils/promiseTimeout.ts

@@ -0,0 +1,13 @@
+/** setTimeout that returns a promise */
+export default function promiseTimeout(
+  /** A function to be executed after the timer expires. */
+  func: Function,
+  /** The time, in milliseconds (thousandths of a second), the timer should wait before the specified function or code is executed. If this parameter is omitted, a value of 0 is used, meaning execute "immediately", or more accurately, as soon as possible.  */
+  delay?: number,
+) {
+  return new Promise(resolve => {
+    setTimeout(() => {
+      resolve(func());
+    }, delay);
+  });
+}

superset-frontend/temporary_superset_ui/superset-ui/packages/superset-ui-core/test/utils/promiseTimeout.test.ts

@@ -0,0 +1,15 @@
+import { promiseTimeout } from '../../src';
+
+describe('promiseTimeout(func, delay)', () => {
+  it('resolves after delay', async () => {
+    const result = await promiseTimeout(() => 'abc', 10);
+    expect(result).toEqual('abc');
+  });
+  it('uses the timer', async () => {
+    const result = await Promise.race([
+      promiseTimeout(() => 'abc', 10),
+      promiseTimeout(() => 'def', 20),
+    ]);
+    expect(result).toEqual('abc');
+  });
+});