define(['./isFunction', './_deepGet', './_toPath', './restArguments', './map'], function (isFunction, _deepGet, _toPath, restArguments, map) {

  // Invoke a method (with arguments) on every item in a collection.
  var invoke = restArguments(function(obj, path, args) {
    var contextPath, func;
    if (isFunction(path)) {
      func = path;
    } else {
      path = _toPath(path);
      contextPath = path.slice(0, -1);
      path = path[path.length - 1];
    }
    return map(obj, function(context) {
      var method = func;
      if (!method) {
        if (contextPath && contextPath.length) {
          context = _deepGet(context, contextPath);
        }
        if (context == null) return void 0;
        method = context[path];
      }
      return method == null ? method : method.apply(context, args);
    });
  });

  return invoke;

});