I get loads of 'Circular dependency' errors when bundling 'npm link' symlinked modules

[twilson90]

My project is located in C:/projects/my-project.
In there I ran npm link "C:/projects/another-project"
That allows me to import code from the other project.
But when I try using rollup on 'my-project', I get a load of errors that look like this:

Circular dependency: node_modules/core-js/modules/es.symbol.js -> C:/projects/my-project/node_modules/core-js/modules/es.symbol.constructor.js?commonjs-proxy -> node_modules/core-js/modules/es.symbol.constructor.js -> node_modules/core-js/modules/es.symbol.js

This is my script:

/**
  var plugins = [];
  plugins.push(
    rollup_plugin_node_resolve({browser: true}),
    rollup_plugin_commonjs({}),
    rollup_node_polyfills(),
  );
  var babel_presets = [
    [
      "@babel/preset-env", {
        "useBuiltIns": "usage",
        "corejs": "3"
      },
    ]
  ];
  var babel_plugins = [];
  plugins.push(
    rollup_plugin_babel({
      "babelHelpers": "bundled",
      "presets": babel_presets,
      "plugins": babel_plugins,
    })
  );

  try {
    await fs.mkdir(".rollup", {recursive:true});
    var options = {
      preserveSymlinks: true,
      input: filename,
      plugins,
    }
    var bundle = await rollup({...options, cache});
    var formats = ["iife"];
    for (let f of formats) {
      /** @type {import("rollup").OutputOptions} */
      let output = {
        "format": f,
        "file": out_filename,
        "name": name,
        "sourcemap": false,
      };
      await bundle.write(output);
    }
  } catch (e) {
    console.error(e);
  }
  console.log (`Rollup complete.`);

If I don't use 'preserveSymlinks' then it can't resolve all the corejs modules.

Any ideas how I can fix this?

[twilson90]

I'd commented out "exclude": "node_modules/**" from my babel config. Adding that back in fixed it.