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docs: fix detail about linkedSignal's previous value. (#63811)

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fixes #63655

PR Close #63811
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Matthieu Riegler 2025-09-15 14:36:59 +01:00 committed by Jessica Janiuk
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adev/src/content/guide/signals/linked-signal.md
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@ -106,7 +106,7 @@ When you create a `linkedSignal`, you can pass an object with separate `source`
The `source` can be any signal, such as a `computed` or component `input`. When the value of `source` changes, `linkedSignal` updates its value to the result of the provided `computation`.
The `computation` is a function that receives the new value of `source` and a `previous` object. The `previous` object has two properties— `previous.source` is the previous value of `source`, and `previous.value` is the previous result of the `computation`. You can use these previous values to decide the new result of the computation.
The `computation` is a function that receives the new value of `source` and a `previous` object. The `previous` object has two properties— `previous.source` is the previous value of `source`, and `previous.value` is the previous value of the `linkedSignal`. You can use these previous values to decide the new result of the computation.
HELPFUL: When using the `previous` parameter, it is necessary to provide the generic type arguments of `linkedSignal` explicitly. The first generic type corresponds with the type of `source` and the second generic type determines the output type of `computation`.