Plotly-Dash: How to determine trigger input in client-side callback

Dash’s documentation describes how to determine which input triggered a callback in the case of server-side callbacks: Advanced Callbacks.

Is there a way to determine which input triggered a client-side callback?

It looks like this functionality was added in version 1.13.0 (#1240), but my browser console indicates that dash_clientside.callback_context is undefined. I am running Dash version 1.19.0.

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