Nested parcels gets unmounted multiple times and throws #164

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1. boringContributor commented on Feb 24, 2023

   

   boringContributor

   on Feb 24, 2023

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   How do you use the Parcel component in react v5 ? This seems not even to work anymore
2. MilanKovacic

   added

   bug

   on Dec 17, 2023
3. MilanKovacic commented on Jan 5, 2024

   

   MilanKovacic

   on Jan 5, 2024

   Contributor

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   How do you use the Parcel component in react v5 ? This seems not even to work anymore

   There was an error in one of the published versions. It should be fixed now.
4. sandeeppatel344 commented on Nov 21, 2024

   

   sandeeppatel344

   on Nov 21, 2024

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   Hi!

   I'm having a scenario where parcel A is mounted as <Parcel config={() => System.import('@parcelA')} /> in the main app and that parcel in turn mounts parcel B as <Parcel config={() => System.import('@parcelB')} />.

   When parcel A then gets unmounted, parcel B will be unmounted twice. Once by componentWillUnmount in the Parcel component of parcel A here and once as the child of parcel A here.

   One of these times parcel B already has the status "UNMOUNTING" here and will cause the error https://single-spa.js.org/error/?code=6&arg=&arg=UNMOUNTING to be thrown. Parcel A also will end up with status "SKIP_BECAUSE_BROKEN" and still be kept as a child parcel by the main app.

   Using:

   • single-spa v5.9.4
   • single-spa-react v5.0.0

   I am also facing same issue.
   How we can solve?
5. levrik commented on Jul 18, 2025

   

   levrik

   on Jul 18, 2025

   Last edited by levrik

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   Any workaround available for this? I'm also facing this issue although I'm simply using Parcel within a top-level Single-SPA app that unmounts together with the Parcel.