import assert from 'assert';

export default function() {
  return {
    name: 'cssLoaderVersion',
    validate(val) {
      assert(typeof val === 'number', `The cssLoaderVersion config must be Number, but got ${val}`);
      assert(val === 1 || val === 2, `The cssLoaderVersion config must be 1 or 2, default 1`);
    },
  };
}