react-router-ga/example/node_modules/tar/lib/winchars.js

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'use strict'

// When writing files on Windows, translate the characters to their
// 0xf000 higher-encoded versions.

const raw = [
  '|',
  '<',
  '>',
  '?',
  ':'
]

const win = raw.map(char =>
  String.fromCharCode(0xf000 + char.charCodeAt(0)))

const toWin = new Map(raw.map((char, i) => [char, win[i]]))
const toRaw = new Map(win.map((char, i) => [char, raw[i]]))

module.exports = {
  encode: s => raw.reduce((s, c) => s.split(c).join(toWin.get(c)), s),
  decode: s => win.reduce((s, c) => s.split(c).join(toRaw.get(c)), s)
}