All files are excluded when exclude function contains ||

[cxy930123]

When exclude option is a function and it has operator ||, all files will be ignored.

For example, the following config will ignore all files:

require('postcss-pxtorem')({
    exclude: function exclude(file) {
      return /node_modules/i.test(file) || false;
    }
})

While the following code works properly:

require('postcss-pxtorem')({
    exclude: function exclude(file) {
      return /node_modules/i.test(file);
    }
})