Syntax Lookup
Enter some language construct you want to know more about.
This is the async keyword.
Since 10.1
Use the async keyword to make a function asynchronous. An async function may use the await keyword to unwrap a promise value in a seamingly synchronous manner.
Example
// Some fictive functionality that offers asynchronous network actions
@val external fetchUserMail: string => promise<string> = "GlobalAPI.fetchUserMail"
@val external sendAnalytics: string => promise<unit> = "GlobalAPI.sendAnalytics"
// We use the `async` keyword to allow the use of `await` in the function body
let logUserDetails = async (userId: string) => {
// We use `await` to fetch the user email from our fictive user endpoint
let email = await fetchUserMail(userId)
await sendAnalytics(`User details have been logged for ${userId}`)
Console.log(`Email address for user ${userId}: ${email}`)
}