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ES6 Update #11

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ES6 Update #11

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26 changes: 9 additions & 17 deletions undo.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@
*
* MIT licensed.
*/
(function() {

// based on Backbone.js' inherits
var ctor = function(){};
Expand Down Expand Up @@ -52,17 +51,19 @@ Undo.Stack = function() {
};

extend(Undo.Stack.prototype, {
execute: function(command) {
execute: async function(command) {
this._clearRedo();
command.execute();
await command.execute();
this.commands.push(command);
this.stackPosition++;
this.changed();
},
undo: function() {
this.commands[this.stackPosition].undo();
this.stackPosition--;
this.changed();
undo: async function() {
if (this.canUndo()) {
await this.commands[this.stackPosition].undo();
this.stackPosition--;
this.changed();
}
},
canUndo: function() {
return this.stackPosition >= 0;
Expand Down Expand Up @@ -115,13 +116,4 @@ Undo.Command.extend = function(protoProps) {
return child;
};

// AMD support
if (typeof define === "function" && define.amd) {
// Define as an anonymous module
define(Undo);
} else if(typeof module != "undefined" && module.exports){
module.exports = Undo
}else {
this.Undo = Undo;
}
}).call(this);
export default Undo;