split-line require()'s are mis-detected.

[apomortsev]

A require that is not written in a single line is not properly detected (index.js:100, hasrequire(line) returns false) and the CSS files from the module dependency chain are not bundled.

For example:

index.js:

...
const module = require(
  './module'
);
...

module.js (or one of its dependencies):

...
require('./some.css') // not bundled
...

Thanks.