问题
If I drop into the VSCode debugger in some javascript code and call an asynchronous function with await it just returns a promise. How can I resolve the promise within the debugger so I can see what the result is?
For example, if I define a function like so:
const doAsyncThing = async () => {
return new Promise((resolve) => {
setTimeout(() => {
resolve(5)
}, 1000)
})
}
Then this happens when I call it in the debugger:
> const result = await doAsyncThing()
Promise {<pending>}
> result
Uncaught ReferenceError: result is not defined
> doAsyncThing().then(r => console.log(r))
Promise {<pending>}
> await doAsyncThing().then(r => console.log(r))
Promise {<pending>}
How can I make it resolve the promise and get me the result within the debugger?
This is not a duplicate of How to debug async/await in visual studio code?
That question appears to be asking how to place a breakpoint within an asynchronous function, while I am trying to actually execute the function from the debugger.
I recreated this question in a new post here since I don't believe it is a duplicate of the above post. This is my first time posting so hopefully that's the right thing to do.
回答1:
Maybe put an "await" in front of the function call?
回答2:
You can do it like this:
const result = await Promise.resolve("success");
debugger
And then run debugger in VSCode.
来源：https://stackoverflow.com/questions/64996504/how-to-execute-async-functions-in-vscode-debugger