async function stack trace after await

[Boris Okunskiy]

Stack traces from async functions are different before and after await:

main();

async function main() {

    console.log('stack #1', new Error().stack);

    await one();

    console.log('stack #2', new Error().stack);

}

async function one() {

    // noop

}

In this example stack #1 contains call site (line 1), but stack #2 does not.

Reproducible in Chrome 55.0.2883.95 and Node 7.4.0

[Yang Guo]

This is working as intended. The stack trace after await is missing because the async function is being resumed from the microtask queue.