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// @flow
 
import P from 'parsimmon'
import IdentifierParser from './identifier'
 
import type { VariableNodeType } from '../types'
 
export default P.string('$')
  .then(IdentifierParser.atMost(1))
  .map((value: Array<{value: string}>): VariableNodeType => ({
    name: 'variable',
    value: value && value.length ? `$${value[0].value}` : '$'
  }))
  .desc('variable')