node-zen-observable 0.8.15-3 (amd64 binary) in ubuntu jammy

 This library requires Promises or a Promise polyfill. This library creates a
 new observable object using the specified subscriber function.
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 This package can be used to model push-based data sources such as DOM events,
 timer intervals and sockets.
 .
 Node.js is an event-based server-side JavaScript engine.