Use of worker-plugin does not work with Next.js 10.0.6+

[Nick Singleton]

Whilst building with Next.js up to version 10.0.5 works, using 10.0.6 and 10.0.7 fails like this:

Error: Cannot find module 'webpack/lib/ParserHelpers'
Require stack:
- /[…]/node_modules/worker-plugin/dist/worker-plugin.js
- /[…]/next.config.js
- /[…]/node_modules/next/dist/next-server/server/config.js
- /[…]/node_modules/next/dist/next-server/server/next-server.js
- /[…]/node_modules/next/dist/server/next.js
- /[…]/node_modules/next/dist/server/lib/start-server.js
- /[…]/node_modules/next/dist/cli/next-dev.js
- /[…]/node_modules/next/dist/bin/next
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
    at Function.Module._load (internal/modules/cjs/loader.js:725:27)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at Object.<anonymous> (/[…]/node_modules/worker-plugin/dist/worker-plugin.js:27:34)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at Object.<anonymous> (/[…]/next.config.js:1:22)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/[…]/node_modules/worker-plugin/dist/worker-plugin.js',
    '/[…]/next.config.js',
    '/[…]/node_modules/next/dist/next-server/server/config.js',
    '/[…]/node_modules/next/dist/next-server/server/next-server.js',
    '/[…]/node_modules/next/dist/server/next.js',
    '/[…]/node_modules/next/dist/server/lib/start-server.js',
    '/[…]/node_modules/next/dist/cli/next-dev.js',
    '/[…]/node_modules/next/dist/bin/next'
  ]
}

I have tried with and without the option future: { webpack5: true } in next.config.js.

See Git branch next-latest (diff).

Related issues of the Next.js repository:

• vercel/next.js#22096
• vercel/next.js#21679