Async / Await ?

This is a:

• Bug Report

Which concerns:

• flow-runtime

---

What is the current behaviour?

I have this function which accepts callback with specified argument type. The callback is usually async function.

function RequestQueue({ requestDone: (ctx: RequestContext) => any }) {
}
// somewhere else...
const requestDone = async (ctx: RequestContext) => {
    await doSomeAsyncStuff()
}
RequestQueue({ requestDone })

RuntimeTypeError: requestDone argument “ctx” must be: RequestContext Expected: (ctx: RequestContext) => any Actual: (ctx: RequestContext) => any

---

What is the expected behaviour?

I can imagine this is probably bleeding edge stuff, but wanted to record this in here for some future reference. It’s possible it this be actually solved with native support for async/await. With transpilation in place it’s probably impossible task.

---

Which package versions are you using?

NodeJS v6.10.1

"babel-plugin-flow-runtime": "^0.10.0",
"babel-plugin-syntax-flow": "^6.18.0",
"babel-plugin-transform-decorators-legacy": "^1.3.4",
"babel-plugin-transform-flow-strip-types": "^6.22.0",
"babel-preset-latest-minimal": "^1.1.2",
"babel-preset-stage-1": "^6.22.0",

[phpnode]

@FredyC thanks for digging into this, I can now replicate using:

type Options = {wares: {}};
const wares = {}

function RequestQueue({ wares }: Options, requestDone: (ctx: RequestContext) => any) {
  console.log('yo');
}

const param = async (ctx: RequestContext) => {
  
}

export type RequestContext = {
	requestId: Cuid,
	payload: string|Object,
	meta: Object,
	state: ?Object,
	error: ?string,
};

const requestQueue = RequestQueue({ wares }, param);

[danielkcz]

@phpnode Well this code as a whole indeed works, however once I split it into separate files (as in my original code) it explodes… Here is the gist of how I’ve split it: https://gist.github.com/FredyC/05e980406416cf64f481dc4f8cd677a3

It did not matter when I’ve separated types only to a file, it worked well there. But with 3-way separation it almost looks like that imported RequestContext is different in both files.