removeLocales.js

//https://www.electron.build/configuration/configuration#afterpack
exports.default = async function (context) {
  //console.log(context)
  var fs = require('fs')
  var localeDir = context.appOutDir + '/locales/'

  fs.readdir(localeDir, function (err, files) {
    //files is array of filenames (basename form)
    if (!(files && files.length)) return
    for (var i = 0, len = files.length; i < len; i++) {
      var matchEn = files[i].match(/en-US\.pak/)
      var matchFa = files[i].match(/fa\.pak/)
      if (matchEn === null && matchFa === null) {
        fs.unlinkSync(localeDir + files[i])
      }
    }
  })
}