Token output missing in picomatch.parse from logical or with empty element

[connor4312]

1. Run require('picomatch').parse('foo.(c|m|)js')
2. Observer the following, where the output for the text token of c|m| is actually |m|

{
  input: 'foo.(c|m|)js',
  index: 11,
  start: 0,
  dot: false,
  consumed: 'foo.(c|m|)js',
  output: 'foo\\.(c|m|)js', // < the output is what we would expect
  prefix: '',
  backtrack: false,
  negated: false,
  brackets: 0,
  braces: 0,
  parens: 0,
  quotes: 0,
  globstar: false,
  tokens: [
    { type: 'bos', value: '', output: '' },
    { type: 'text', value: 'foo.', prev: [Object], output: '.' },
    { type: 'paren', value: '(', prev: [Object] },
    { type: 'text', value: 'c|m|', prev: [Object], output: '|m|' }, // 'c' is missing from the output in this token
    { type: 'paren', value: ')', output: ')', prev: [Object] },
    { type: 'text', value: 'js', prev: [Object] }
  ],
  peek: [Function (anonymous)],
  advance: [Function (anonymous)]
}

If the logical expression is modified to remove the empty element, for example making it c|m|x, the the problem disappears.