Hot reload only reload one line of parents

[hlehmann]

🐛 bug report

It appear that hot reload only refresh one line of dependant modules instead of all of dependant modules

💻 Code Sample

// index.js
const render = async () => {
  const {App} = await import("./app");
  ReactDom.render(<App />, document.getElementById("app"));
}

render()
module.hot.accept(render)

// app.js
import "a";
import "b";

export const App = () => null;

// a.js
import {cpt} from "c";
console.log("a", cpt);

// b.js
import {cpt} from "c";
console.log("b", cpt);

// c.js
export const cpt = 1;

🤔 Expected Behavior

When cpt value is changed (to 2 for example) we expect to get the following logs
a 2
b 2

😯 Current Behavior

But we get only
b 2

🌍 Your Environment

Software	Version(s)
Parcel	1.12.3
Node	12.3.0
yarn	1.16.0
ubuntu	18.4

[mischnic]

If thats really all code, then HMR should only cause a full page reload.
To opt into the JS hot module replacement, you need to call module.hot.accept();

[hlehmann]

@mischnic Yes sorry I didn't put the first file. I have updated my code issue accordingly.

[github-actions]

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