src/hydrate/shared/_arc.js
function copy(source, destination, callback) {
  cp(source, destination, {overwrite: true}, function done(err) {
    if (err) callback(err)
    else callback()
  })
}
function copy(source, destination, callback) {
  cp(source, destination, {overwrite: true}, function done(err) {
    if (err) callback(err)
    else callback()
  })
}
function copy ( source , destination , callback ) { cp ( source , destination , { overwrite : true } , function done ( err ) { if ( err ) callback ( err ) else callback ( ) } ) }
Reusable copier, always overwrites
Reusable copier always overwrites