Cannot find module "threadChild.js"

[ruk93]

I'm working on a custom build toolchain (something like react-script) using webpack for a project and uses ncc to build the toolchain.
While ncc build process works without any error, I'm having an issue when executing the build output.

This error is not happening when I'm using just tsc (without ncc).

Steps to reproduce,

1. make custom webpack build script. (input file for NCC)

#!/usr/bin/env node
import * as webpack from "webpack";
import * as webpackDevServer from "webpack-dev-server";
import path from "path";

const filePath = (_path: string) => {
  return path.resolve(__dirname, "../../", _path);
};

const webpackOptions: webpack.Configuration = {
  entry: filePath("src/index.js"),
  mode: "production",
  resolve: { extensions: ["*", ".js", ".jsx"] },
  output: {
    path: filePath("dist" + "/"),
    publicPath: "/dist/",
    filename: "bundle.js",
  }
  //...other config options
};

const compiler = webpack.default(webpackOptions, (err, stats) => {
  console.log(err, stats);
});

2. Bundle the file using ncc
3. Execute the output file

Expected Behavior

webpack toolchain (build) should work without any error.

Current Behavior

Error: Cannot find module '/Users/***/Documents/projects/***/threadChild.js'
    at Module._resolveFilename (node:internal/modules/cjs/loader:1039:15)
    at Module._load (node:internal/modules/cjs/loader:885:27)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at MessagePort.<anonymous> (node:internal/main/worker_thread:159:24)
    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:735:20)
    at exports.emitMessage (node:internal/per_context/messageport:23:28)

Is there any way to fix this missing file ?

Thank you !!