`hdf5.File is not a constructor` when bundled with webpack

[ziyuang]

I've created a small example: https://gist.github.com/ziyuang/30f135a2405bbeeb004fe4c8a05e8f5c.
Here are the files

// index.js
import { hdf5 } from 'hdf5';
import { Access } from 'hdf5/lib/globals';

let f = new hdf5.File('test.hdf5', Access.ACC_RDONLY);

// package.json
{
  "name": "hdf5_test",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "hdf5": "https://github.com/HDF-NI/hdf5.node#v12"
  },
  "devDependencies": {
    "file-loader": "^6.0.0",
    "webpack": "^4.44.1",
    "webpack-cli": "^3.3.12"
  }
}

// webpack.config.js
const path = require('path');

module.exports = {
    entry: './index.js',
    target: 'node',
    module: {
        rules: [
            {
                test: /\.node$/,
                use: 'file-loader'
            },
        ],
    },
    mode: 'development',
    output: {
        filename: 'index.js',
        path: path.resolve(__dirname, 'dist')
    },
};

Then after npx webpack && cd dist && node index.js, I got the error

let f = new hdf5__WEBPACK_IMPORTED_MODULE_0__["hdf5"].File('test.hdf5', hdf5_lib_globals__WEBPACK_IMPORTED_MODULE_1__["Access"].ACC_RDONLY);
        ^

TypeError: hdf5__WEBPACK_IMPORTED_MODULE_0__.hdf5.File is not a constructor

What am I missing? Thanks.

[rimmartin]

@ziyuang
This project is nodejs based. I'm not familiar with running such in browsers or via webpack

[ziyuang]

@rimmartin right, resorting to webpack-node-externals seems to help.