def argv List<string> {
  return process.argv.slice(2)
}

def timeMs int {
  return Date.new.getTime()
}

var fs = require("fs")

def readFile(filename string) string {
  return fs.readFileSync(filename, "utf-8")
}

def writeString(s string) {
  fs.writeSync(1, s)
}

def printLn(s string) {
  writeString(s)
  writeString("\n")
}

def readLine(prompt string) string {
  writeString(prompt)
  var buffer = Buffer.new(1024) # in newer Node this should be Buffer.alloc
  var stdin = fs.openSync("/dev/stdin", "rs")
  var bytesread int
  var anycharseen = false
  var total = 0
  while (bytesread = fs.readSync(stdin, buffer, total, 1)) > 0 {
    anycharseen = true
    var lastchar = buffer.slice(total, total + bytesread).toString()
    if lastchar == "\n" {
      break
    }
    total += bytesread
  }
  fs.closeSync(stdin)
  return anycharseen ? buffer.slice(0, total).toString() : null
}

def stringToInt(str string) int {
  return parseInt(str)
}

@import {
  const process dynamic
  const Buffer dynamic
  const Date dynamic
  const Error dynamic

  def parseInt(str string) int
  def require(name string) dynamic
}