text: var _dec, _dec2, _class, _desc, _value, _class2, _descriptor, _descriptor2, _descriptor3, _descriptor4;
  
  function _initDefineProp(target, property, descriptor, context) {
    if (!descriptor) return;
    Object.defineProperty(target, property, {
      enumerable: descriptor.enumerable,
      configurable: descriptor.configurable,
      writable: descriptor.writable,
      value: descriptor.initializer ? descriptor.initializer.call(context) : void 0
    });
  }
  
  
  
  function _applyDecoratedDescriptor(target, property, decorators, descriptor, context) {
    var desc = {};
    Object['ke' + 'ys'](descriptor).forEach(function (key) {
      desc[key] = descriptor[key];
    });
    desc.enumerable = !!desc.enumerable;
    desc.configurable = !!desc.configurable;
  
    if ('value' in desc || desc.initializer) {
      desc.writable = true;
    }
  
    desc = decorators.slice().reverse().reduce(function (desc, decorator) {
      return decorator(target, property, desc) || desc;
    }, desc);
  
    if (context && desc.initializer !== void 0) {
      desc.value = desc.initializer ? desc.initializer.call(context) : void 0;
      desc.initializer = undefined;
    }
  
    if (desc.initializer === void 0) {
      Object['define' + 'Property'](target, property, desc);
      desc = null;
    }
  
    return desc;
  }
  
  function _initializerWarningHelper(descriptor, context) {
    throw new Error('Decorating class property failed. Please ensure that transform-class-properties is enabled.');
  }
  
  import { Container, inject } from 'aurelia-dependency-injection';
  import { TaskQueue } from 'aurelia-task-queue';
  import { CompositionEngine, ViewSlot, ViewResources, customElement, bindable, noView, View } from 'aurelia-templating';
  import { DOM } from 'aurelia-pal';
  
  export var Compose = (_dec = customElement('compose'), _dec2 = inject(DOM.Element, Container, CompositionEngine, ViewSlot, ViewResources, TaskQueue), _dec(_class = noView(_class = _dec2(_class = (_class2 = function () {
    function Compose(element, container, compositionEngine, viewSlot, viewResources, taskQueue) {
      
  
      _initDefineProp(this, 'model', _descriptor, this);
  
      _initDefineProp(this, 'view', _descriptor2, this);
  
      _initDefineProp(this, 'viewModel', _descriptor3, this);
  
      _initDefineProp(this, 'swapOrder', _descriptor4, this);
  
      this.element = element;
      this.container = container;
      this.compositionEngine = compositionEngine;
      this.viewSlot = viewSlot;
      this.viewResources = viewResources;
      this.taskQueue = taskQueue;
      this.currentController = null;
      this.currentViewModel = null;
    }
  
    Compose.prototype.created = function created(owningView) {
      this.owningView = owningView;
    };
  
    Compose.prototype.bind = function bind(bindingContext, overrideContext) {
      this.bindingContext = bindingContext;
      this.overrideContext = overrideContext;
      processInstruction(this, createInstruction(this, {
        view: this.view,
        viewModel: this.viewModel,
        model: this.model
      }));
    };
  
    Compose.prototype.unbind = function unbind(bindingContext, overrideContext) {
      this.bindingContext = null;
      this.overrideContext = null;
      var returnToCache = true;
      var skipAnimation = true;
      this.viewSlot.removeAll(returnToCache, skipAnimation);
    };
  
    Compose.prototype.modelChanged = function modelChanged(newValue, oldValue) {
      var _this = this;
  
      if (this.currentInstruction) {
        this.currentInstruction.model = newValue;
        return;
      }
  
      this.taskQueue.queueMicroTask(function () {
        if (_this.currentInstruction) {
          _this.currentInstruction.model = newValue;
          return;
        }
  
        var vm = _this.currentViewModel;
  
        if (vm && typeof vm.activate === 'function') {
          vm.activate(newValue);
        }
      });
    };
  
    Compose.prototype.viewChanged = function viewChanged(newValue, oldValue) {
      var _this2 = this;
  
      var instruction = createInstruction(this, {
        view: newValue,
        viewModel: this.currentViewModel || this.viewModel,
        model: this.model
      });
  
      if (this.currentInstruction) {
        this.currentInstruction = instruction;
        return;
      }
  
      this.currentInstruction = instruction;
      this.taskQueue.queueMicroTask(function () {
        return processInstruction(_this2, _this2.currentInstruction);
      });
    };
  
    Compose.prototype.viewModelChanged = function viewModelChanged(newValue, oldValue) {
      var _this3 = this;
  
      var instruction = createInstruction(this, {
        viewModel: newValue,
        view: this.view,
        model: this.model
      });
  
      if (this.currentInstruction) {
        this.currentInstruction = instruction;
        return;
      }
  
      this.currentInstruction = instruction;
      this.taskQueue.queueMicroTask(function () {
        return processInstruction(_this3, _this3.currentInstruction);
      });
    };
  
    return Compose;
  }(), (_descriptor = _applyDecoratedDescriptor(_class2.prototype, 'model', [bindable], {
    enumerable: true,
    initializer: null
  }), _descriptor2 = _applyDecoratedDescriptor(_class2.prototype, 'view', [bindable], {
    enumerable: true,
    initializer: null
  }), _descriptor3 = _applyDecoratedDescriptor(_class2.prototype, 'viewModel', [bindable], {
    enumerable: true,
    initializer: null
  }), _descriptor4 = _applyDecoratedDescriptor(_class2.prototype, 'swapOrder', [bindable], {
    enumerable: true,
    initializer: null
  })), _class2)) || _class) || _class) || _class);
  
  function createInstruction(composer, instruction) {
    return Object.assign(instruction, {
      bindingContext: composer.bindingContext,
      overrideContext: composer.overrideContext,
      owningView: composer.owningView,
      container: composer.container,
      viewSlot: composer.viewSlot,
      viewResources: composer.viewResources,
      currentController: composer.currentController,
      host: composer.element,
      swapOrder: composer.swapOrder
    });
  }
  
  function processInstruction(composer, instruction) {
    composer.currentInstruction = null;
    composer.compositionEngine.compose(instruction).then(function (controller) {
      composer.currentController = controller;
      composer.currentViewModel = controller ? controller.viewModel : null;
    });
  }