What is `isCommand` in an event descriptor?

Photoshop UXP Plugin API
1

I have event listener in a plugin and usually it is called one time on each action. While developing at some point listener started recieving 2 events for each action. The only difference was isCommand property of the event descriptor - first time false and second time true. After I restarted Ps and loaded plugin again, it got back to one event per action with isCommand: false

What is this property? Do we need to pass it using batchPlay()? Why it event were triggered twice?

2

You can leave it out, it will default to true. (Here’s an older comment about it)

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