November 2018
Beginner
132 pages
2h 57m
English
Content preview from Server Side development with Node.js and Koa.js Quick Start Guide
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Introducing async
Another way to create and resolve promises is to use the async… await syntax. Async is basically syntactical sugar around the Promise class. The dataPromise promise we defined earlier with the Promise class can be defined with async as follows:
async dataPromise() { return "some important data!";}Rejections can also be defined simply by throwing errors within the async function:
async dataPromise() { throw new Error('data failure');}Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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