Skip to content

docs: clarify await usage in part 4b #4301

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
jurajkapsz wants to merge 1 commit into
base: source
Choose a base branch
from
Open

docs: clarify await usage in part 4b #4301

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion src/content/4/en/part4b.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -441,7 +441,7 @@ Thanks to the new syntax, the code is a lot simpler than the previous then-chain

There are a few important details to pay attention to when using async/await syntax. To use the await operator with asynchronous operations, they have to return a promise. This is not a problem as such, as regular asynchronous functions using callbacks are easy to wrap around promises.

The await keyword can't be used just anywhere in JavaScript code. Using await is possible only inside of an [async](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function) function.
The await keyword can't be used just anywhere in JavaScript code. In CommonJS, await can be used only inside an [async](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function) function. _(In ESM modules, [top-level await](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await#top_level_await) is also supported.)_

This means that in order for the previous examples to work, they have to be using async functions. Notice the first line in the arrow function definition:

Expand Down