Webpack configuration for multiblock plugins behaves unexpectedly

Okay I found a quick and dirty solution for the viewScript.

My webpack.config.js:

/**
 * `@wordpress/scripts` path-based name multi-block Webpack configuration.
 * @see https://wordpress.stackexchange.com/questions/390282
 */

// Native Depedencies.
const path = require("path");

// Third-Party Dependencies.
const CopyPlugin = require("copy-webpack-plugin");
const config = require("@wordpress/scripts/config/webpack.config.js");

/**
 * Resolve a series of path parts relative to `./src`.
 * @param string[] path_parts An array of path parts.
 * @returns string A normalized path, relative to `./src`.
 **/
const resolveSource = (...path_parts) =>
    path.resolve(process.cwd(), "src", ...path_parts);

/**
 * Resolve a block name to the path to it's main `index.js` entry-point.
 * @param string name The name of the block.
 * @returns string A normalized path to the block's entry-point file.
 **/
const resolveBlockEntry = (name) => resolveSource("blocks", name, "index.js");

/**
 * Resolve a block name to the path to it's script `frontend.js`
 * @param string name The name of the block.
 * @returns string A normalized path to the block's viewScript file.
 **/
const resolveBlockViewScript = (name) =>
    resolveSource("blocks", name, "frontend.js");

config.entry = {
    "admin/index": resolveSource("admin", "index.js"),
    "blocks/accordion/index": resolveBlockEntry("accordion"),
    "blocks/accordion-item/index": resolveBlockEntry("accordion-item"),
    "blocks/accordion/frontend": resolveBlockViewScript("accordion"),
};

// Add a CopyPlugin to copy over block.json files.
config.plugins.push(
    new CopyPlugin({
        patterns: [
            {
                context: "src",
                from: `blocks/*/block.json`,
            },
        ],
    })
);

module.exports = config;

The Output:

build
-- admin
  - index.asset.php
  - index.js
  - style-index.css
-- blocks
  -- accordion
    - block.json
    - frontend.asset.php
    - frontend.js
    - index.asset.php
    - index.css
    - index.js
  -- accordion-item
    - block.json
    - index.asset.php
    - index.css
    - index.js
    - style-index.css

This works for me. I am open for improvements, though, since this is an annoyance to maintain when adding new blocks.