Error: Unexpected token build/node_modules/mongoose/package.json (2:8)

[SMotaal]

I'm trying to bundle "mongoose" for the first time and I am getting this very odd error when using node-resolve:

[!] Error: Unexpected token
build/node_modules/mongoose/package.json (2:8)
1: {
2:   "name": "mongoose",
           ^
3:   "description": "Mongoose MongoDB ODM",
4:   "version": "5.2.3",

error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Here is my rollup.config:

const moduleDirectory = 'build/node_modules';

export default {
  optimizeChunks: true,
  experimentalCodeSplitting: true,

  external: module.constructor.builtinModules,

  input: {
    mongoose: `./${moduleDirectory}/mongoose/index.js`,
  },

  output: {
    dir: 'build/bundles',
    format: 'es',
    sourcemap: true,
    interop: false,
    entryFileNames: `[name].m.js`,
    chunkFileNames: `chunks/[name].m.js`,
  },

  plugins: [
    nodeResolve({
      // browser: true,
      // main: true,
      // preferBuiltins: true,
      jail: moduleDirectory,
      customResolveOptions: {
        moduleDirectory,
      },
    }),
    commonjs(),
  ],
};

[SMotaal]

Just needed 'rollup-plugin-json'... Why does that make sense 🥇