text: const { hasOwnProperty } = Object.prototype
  
  const eol = typeof process !== 'undefined' &&
    process.platform === 'win32' ? '\r\n' : '\n'
  
  const encode = (obj, opt) => {
    const children = []
    let out = ''
  
    if (typeof opt === 'string') {
      opt = {
        section: opt,
        whitespace: false,
      }
    } else {
      opt = opt || Object.create(null)
      opt.whitespace = opt.whitespace === true
    }
  
    const separator = opt.whitespace ? ' = ' : '='
  
    for (const k of Object.keys(obj)) {
      const val = obj[k]
      if (val && Array.isArray(val)) {
        for (const item of val)
          out += safe(k + '[]') + separator + safe(item) + '\n'
      } else if (val && typeof val === 'object')
        children.push(k)
      else
        out += safe(k) + separator + safe(val) + eol
    }
  
    if (opt.section && out.length)
      out = '[' + safe(opt.section) + ']' + eol + out
  
    for (const k of children) {
      const nk = dotSplit(k).join('\\.')
      const section = (opt.section ? opt.section + '.' : '') + nk
      const { whitespace } = opt
      const child = encode(obj[k], {
        section,
        whitespace,
      })
      if (out.length && child.length)
        out += eol
  
      out += child
    }
  
    return out
  }
  
  const dotSplit = str =>
    str.replace(/\1/g, '\u0002LITERAL\\1LITERAL\u0002')
      .replace(/\\\./g, '\u0001')
      .split(/\./)
      .map(part =>
        part.replace(/\1/g, '\\.')
          .replace(/\2LITERAL\\1LITERAL\2/g, '\u0001'))
  
  const decode = str => {
    const out = Object.create(null)
    let p = out
    let section = null
    //          section     |key      = value
    const re = /^\[([^\]]*)\]$|^([^=]+)(=(.*))?$/i
    const lines = str.split(/[\r\n]+/g)
  
    for (const line of lines) {
      if (!line || line.match(/^\s*[;#]/))
        continue
      const match = line.match(re)
      if (!match)
        continue
      if (match[1] !== undefined) {
        section = unsafe(match[1])
        if (section === '__proto__') {
          // not allowed
          // keep parsing the section, but don't attach it.
          p = Object.create(null)
          continue
        }
        p = out[section] = out[section] || Object.create(null)
        continue
      }
      const keyRaw = unsafe(match[2])
      const isArray = keyRaw.length > 2 && keyRaw.slice(-2) === '[]'
      const key = isArray ? keyRaw.slice(0, -2) : keyRaw
      if (key === '__proto__')
        continue
      const valueRaw = match[3] ? unsafe(match[4]) : true
      const value = valueRaw === 'true' ||
        valueRaw === 'false' ||
        valueRaw === 'null' ? JSON.parse(valueRaw)
        : valueRaw
  
      // Convert keys with '[]' suffix to an array
      if (isArray) {
        if (!hasOwnProperty.call(p, key))
          p[key] = []
        else if (!Array.isArray(p[key]))
          p[key] = [p[key]]
      }
  
      // safeguard against resetting a previously defined
      // array by accidentally forgetting the brackets
      if (Array.isArray(p[key]))
        p[key].push(value)
      else
        p[key] = (p[key]) ? `${p[key]},${value}` : value
    }
  
    // {a:{y:1},"a.b":{x:2}} --> {a:{y:1,b:{x:2}}}
    // use a filter to return the keys that have to be deleted.
    const remove = []
    for (const k of Object.keys(out)) {
      if (!hasOwnProperty.call(out, k) ||
          typeof out[k] !== 'object' ||
          Array.isArray(out[k]))
        continue
  
      // see if the parent section is also an object.
      // if so, add it to that, and mark this one for deletion
      const parts = dotSplit(k)
      let p = out
      const l = parts.pop()
      const nl = l.replace(/\\\./g, '.')
      for (const part of parts) {
        if (part === '__proto__')
          continue
        if (!hasOwnProperty.call(p, part) || typeof p[part] !== 'object')
          p[part] = Object.create(null)
        p = p[part]
      }
      if (p === out && nl === l)
        continue
  
      p[nl] = out[k]
      remove.push(k)
    }
    for (const del of remove)
      delete out[del]
  
    return out
  }
  
  const isQuoted = val =>
    (val.charAt(0) === '"' && val.slice(-1) === '"') ||
      (val.charAt(0) === "'" && val.slice(-1) === "'")
  
  const safe = val =>
    (typeof val !== 'string' ||
      val.match(/[=\r\n]/) ||
      val.match(/^\[/) ||
      (val.length > 1 &&
       isQuoted(val)) ||
      val !== val.trim())
      ? JSON.stringify(val)
      : val.replace(/;/g, '\\;').replace(/#/g, '\\#')
  
  const unsafe = (val, doUnesc) => {
    val = (val || '').trim()
    if (isQuoted(val)) {
      // remove the single quotes before calling JSON.parse
      if (val.charAt(0) === "'")
        val = val.substr(1, val.length - 2)
  
      try {
        val = JSON.parse(val)
      } catch (_) {}
    } else {
      // walk the val to find the first not-escaped ; character
      let esc = false
      let unesc = ''
      for (let i = 0, l = val.length; i < l; i++) {
        const c = val.charAt(i)
        if (esc) {
          if ('\\;#'.indexOf(c) !== -1)
            unesc += c
          else
            unesc += '\\' + c
  
          esc = false
        } else if (';#'.indexOf(c) !== -1)
          break
        else if (c === '\\')
          esc = true
        else
          unesc += c
      }
      if (esc)
        unesc += '\\'
  
      return unesc.trim()
    }
    return val
  }
  
  module.exports = {
    parse: decode,
    decode,
    stringify: encode,
    encode,
    safe,
    unsafe,
  }
  