Steps to include a Target property in a freshly created MouseEvent

Trying to dispatch a contextMenu event, I've noticed that in the MouseEvent interface for TypeScript, the target property is missing, even though it is documented in the contextMenu documentation.

Here's my TypeScript snippet:

const emulatedMouseEvent: MouseEvent = new MouseEvent('contextmenu', {
  bubbles: true,
  altKey: event.args[0],
  ctrlKey: event.args[1],
  shiftKey: event.args[2]
})
this.webview.dispatchEvent(emulatedMouseEvent)

Encountering a TypeScript error when attempting to add target: event.args[3]:

Argument of type '{ bubbles: true; altKey: any; ctrlKey: any; shiftKey: any; target: any; }' is not assignable to parameter of type 'MouseEventInit'.
  Object literal may only specify known properties, and 'target' does not exist in type 'MouseEventInit'.ts(2345)

Also, in lib.dom.d.ts:

Interface MouseEvent extends UIEvent {
    (properties of MouseEvent interface...)
}

Although the MouseEvent documentation doesn't include a Target property, I'm unsure of how to create a contextmenu event with the target property, which is available on the event itself but not on the MouseEvent interface.

Edit: This is not a duplicate question, as the issue here relates to the absence of the Target property in the MouseEvent interface and the solutions provided do not address this specific scenario.

Answer №1

While working on a project, I encountered a situation where I had to set the target for events due to a dependency on an external library. To address this issue, I came up with a solution by creating a custom function that accepts

MouseEventInit & { target: EventTarget }

function customMouseEvent(event: string, args: MouseEventInit & { target: EventTarget }): MouseEvent {
  return new MouseEvent(event, { bubbles: true, ...args });
}

Instead of using new MouseEvent(), you can now use

customMouseEvent('contextmenu', { target })

Answer №2

MouseEvent is a subclass of UIEvent
, UIEvent is a subclass of Event, Event includes a target property.

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