IE11 support

[tommybl]

This package does not work on IE11, as it uses unsupported features:

• in clean_id.js line 29, use of string interpolation:

return `(${value.replace(/[\\?*+|.^${}[\]()]/g, '\\$&')})`

• in without.js line 28, use of for...of statement:

for (let name of objectKeys(element))

The package should be transpiled into cross-browser supported code using a tool like Babel, before it's published to NPM.

Thanks!

[calebtr-metro]

I was able to get around this by having webpack run this package through babel-loader. In webpack.config.js:

  // IE11
  config.module.rules.push({
    test: /\.js$/,
    include: path.resolve(__dirname, '../node_modules/twig-drupal-filters/'),
    loader: 'babel-loader',
  });

babel.config.js also needed updating:

const sourceType = 'unambiguous';