text: #!/usr/bin/env node
  
  const isQuote = c => c === '"' || c === "'"
  const isOperator = c => '!=<>'.includes(c)
  const isNumber = c => c >= '0' && c <= '9'
  const isCharacter = c => (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
  const isVariable = c => '_-?'.includes(c) || isCharacter(c) || isNumber(c)
  const isBlank = c => c === '\n' || c === '\t' || c === ' ' || c === '\r' || c === '\v' || c === '\f'
  const isInlineBlank = c => c === '\t' || c === ' ' || c === '\r'
  const isSign = c => c === '-' || c === '+'
  // See https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/RegExp
  const unicodeBlanks = '\u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000'
  
  const types = []
  for (let i = 0; i < 128; i++) {
    const c = String.fromCharCode(i)
    let n = 0
    if (isVariable(c)) n |= 1
    if (isOperator(c)) n |= 2
    if (isBlank(c)) n |= 4
    if (isQuote(c)) n |= 8
    if (isInlineBlank(c)) n |= 16
    if (isNumber(c)) n |= 32
    if (isSign(c)) n |= 64
    types.push(n)
  }
  
  console.log(`
  // **DO NOT CHANGE THIS FILE**
  //
  // This file is generated by bin/character-gen.js
  // bitmask character types to boost performance
  export const TYPES = [${types.join(', ')}]
  export const VARIABLE = 1
  export const OPERATOR = 2
  export const BLANK = 4
  export const QUOTE = 8
  export const INLINE_BLANK = 16
  export const NUMBER = 32
  export const SIGN = 64
  `.trim())
  
  console.log([...unicodeBlanks].map(char => `TYPES[${char.charCodeAt(0)}]`).join(' = ') + ' = BLANK')
  