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Remove Hermes V1 opt-out mechanism for Android#56710

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cortinico wants to merge 2 commits intomainfrom
nc/remove-hermesv1-optout
Open

Remove Hermes V1 opt-out mechanism for Android#56710
cortinico wants to merge 2 commits intomainfrom
nc/remove-hermesv1-optout

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Summary:

Hermes V1 is now always enabled on Android. Users can no longer set hermesV1Enabled=false to fall back to classic Hermes. If the property is still present in gradle.properties, a deprecation warning is logged.

Changelog:

[ANDROID] [REMOVED] - Remove opt-out for using legacy Hermes. HermesV1 is now the default and only version of Hermes.

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cortinico added 2 commits May 6, 2026 18:01
Hermes V1 is now always enabled on Android. Users can no longer set
`hermesV1Enabled=false` to fall back to classic Hermes. If the property
is still present in gradle.properties, a deprecation warning is logged.
@meta-cla meta-cla Bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label May 6, 2026
@facebook-github-tools facebook-github-tools Bot added p: Facebook Partner: Facebook Partner labels May 6, 2026
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meta-codesync Bot commented May 6, 2026

@cortinico has imported this pull request. If you are a Meta employee, you can view this in D104075655.

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