| [](https://github.com/google/observable/actions?query=workflow%3A"ci"+branch%3Amaster) |
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| Support for detecting and being notified when an object is mutated. |
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| An observable is a way to be notified of a continuous stream of events over time. |
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| Some suggested uses for this library: |
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| * Observe objects for changes, and log when a change occurs |
| * Optimize for observable collections in your own APIs and libraries instead of diffing |
| * Implement simple data-binding by listening to streams |
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| You may want to look at the former TC39 proposal [Observe.observe](https://github.com/tc39/proposal-observable), which was deprecated. |
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| ### Usage |
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| There are two general ways to detect changes: |
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| * Listen to `Observable.changes` and be notified when an object changes |
| * Use `Differ.diff` to determine changes between two objects |
