Attach modal to Sketch document

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Attach modal to Sketch document

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Last edited Jun 14, 2020

Created on Jun 14, 2020

This example shows how to attach a modal alert dialog to the active Sketch document window using the Sketch scripting API. It creates an `NSAlert` with OK and Cancel buttons and presents it as a sheet via `beginSheetModalForWindow:completionHandler:`. The completion handler uses a block created with `__mocha__.createBlock_function` to process the return code, logging success or cancelation. The code manages asynchronous execution through `coscript.createFiber()` and cleans up the fiber after the dialog closes.

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