promisify

1-js/11-async/08-async-await/03-async-from-regular/solution.md

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+
+That's the case when knowing how it works inside is helpful.
+
+Just treat `async` call as promise and attach `.then` to it:
+```js run
+async function wait() {
+  await new Promise(resolve => setTimeout(resolve, 1000));
+
+  return 10;
+}
+
+function f() {
+  // shows 10 after 1 second
+*!*
+  wait().then(result => alert(result));
+*/!*
+}
+
+f();
+```

1-js/11-async/08-async-await/03-async-from-regular/task.md

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+
+# Call async from non-async
+
+We have a "regular" function. How to call `async` from it and use its result?
+
+```js
+async function wait() {
+  await new Promise(resolve => setTimeout(resolve, 1000));
+
+  return 10;
+}
+
+function f() {
+  // ...what to write here?
+  // we need to call async wait() and wait to get 10
+  // remember, we can't use "await"
+}
+```
+
+P.S. The task is technically very simple, but the question is quite common for developers new to async/await.