TypeScript: cannot find name async/await

Question

I'm using typescript@next and I want to compile my code to es5, but each time I'm using async or await keywords the compiler errors with that message:

Cannot find name 'await'. 

Heres my libs: dom, es2015, es2016, es2017.

Code example:

let asyncFn = () => {    return new Promise((resolve:Function)=>{resolve(2)}) } // should log `2` console.log(await asyncFn()) 

Such things are possible even with [email protected], I've tried it, but somehow I am unable to compile my code anyway.

Answer 1

You need to use your asyncFn inside a function marked as an 'async' function. For example:

async someAsyncCode() {     let asyncFn = () => {         return new Promise((resolve: Function) => { resolve(2); });     }     // should log `2`     console.log(await asyncFn()); }