Current version doesn't support IE11

[sunknudsen]

Adding IE11 support appears to be very easy.

It is achieved by replacing the Object.assign call found here by a call to the following ponyfill.

This ponyfill is inspired by the following polyfill by Mozilla.

function objectAssign(target, varArgs) {
  if (target == null) {
    throw new TypeError('Cannot convert undefined or null to object');
  }
  var to = Object(target);
  for (var index = 1; index < arguments.length; index++) {
    var nextSource = arguments[index];
    if (nextSource != null) {
      for (var nextKey in nextSource) {
        if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
          to[nextKey] = nextSource[nextKey];
        }
      }
    }
  }
  return to;
}

[MatthewCallis]

I didn't want to include a polyfill directly in the code when it can be conditionally added by whatever build tool like Polyfill.io or mdn-polyfills with import 'mdn-polyfills/Object.assign'; // 317 bytes. I will just let Babel handle it and use object-spread instead. I will work on a PR and some other updates, but until then one of those options should work immediately.

[sunknudsen]

Thanks Matthew

[MatthewCallis]

The new version uses spread and should work fine in IE11 since it went through Babel!

[sunknudsen]

Thanks @MatthewCallis. I confirm version 4.0.0 works in IE 11. Good work!