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doc: clarify persistent ref behavior #42035

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doc: clarify persistent ref behavior #42035

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doc: clarify persistent ref behavior
mhdawson Feb 17, 2022
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Update doc/api/n-api.md
mhdawson Feb 21, 2022
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squash: address comments
mhdawson Feb 21, 2022
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mhdawson Feb 22, 2022
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9 changes: 8 additions & 1 deletion doc/api/n-api.md
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Expand Up @@ -1649,7 +1649,14 @@ the corresponding object on the heap being retained forever.

There can be multiple persistent references created which refer to the same
object, each of which will either keep the object live or not based on its
individual count.
individual count. Multiple persistent references to the same object
can result in unexpectedly keeping alive native memory. The native structures
for a persistent reference must be kept alive until finalizers for the
referenced object are executed. If a new persistent reference to the
is created for the same object, the finalizers for that object will not be
run and the native memory from the earlier persistent reference will
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not be freed. This can be avoided by calling `napi_delete_reference`
in addition to `napi_reference_unref` when possible.
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#### `napi_create_reference`

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