code: function parse() {
    var self = this
    var value = String(self.file)
    var start = {line: 1, column: 1, offset: 0}
    var content = xtend(start)
    var node
  
    // Clean non-unix newlines: `\r\n` and `\r` are all changed to `\n`.
    // This should not affect positional information.
    value = value.replace(lineBreaksExpression, lineFeed)
  
    // BOM.
    if (value.charCodeAt(0) === 0xfeff) {
      value = value.slice(1)
  
      content.column++
      content.offset++
    }
  
    node = {
      type: 'root',
      children: self.tokenizeBlock(value, content),
      position: {start: start, end: self.eof || xtend(start)}
    }
  
    if (!self.options.position) {
      removePosition(node, true)
    }
  
    return node
  }
docs: Parse the bound file.