unsafe-eval when using content-security-policy

[rafde]

the following lines will produce unsafe-eval when using content-security-policy

https://github.com/ytiurin/downscale/blob/master/src/downscale.js#L14
https://github.com/ytiurin/downscale/blob/master/src/downscale.js#L20

The use of new Function is considered unsafe. I am not sure why this approach was taken, but my guess is there was a no-op function that was needed. I think the safer approach would be

function _noop(){}

function createTiming(enabled, source, destWidth, destHeight)
{
  var start  = new Date
  var timing = {}
  var prev   = start
  var n      = "01"

  return {
    mark: enabled ? function(name) {
      name = n + ". " + (name || "...")
      timing[name] = { "time (ms)": (new Date) - prev }
      prev = new Date
      n = ("0" + ((n >> 0) + 1)).substr(-2)
    } : _noop,
    finish: enabled ? function() {
      timing[n + " TOTAL"] = { "time (ms)": (new Date) - start }
      console.log("IMAGE SOURCE:", source)
      console.log("DOWNSCALE TO:", destWidth + "x" + destHeight)
      console.table(timing)
    } : _noop
  }
}