code: function readCloseTag() {
  		let start = getSourcePoint(),
  			match = tagCloseRegex.exec(source.substr(pos))
  		if (!match) {
  			throwSyntaxError('Invalid close tag')
  		}
  		advanceTo(pos + match[0].length)
  		let end = getSourcePoint()
  		return {
  			type: 'tag-close',
  			start,
  			end,
  			name: match[1].toLowerCase()
  		}
  	}
docs: Read a close tag token
  @returns {Token}