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Make Hermes the default engine on iOS #34085

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@hramos hramos commented Jun 27, 2022

Summary:
Hermes is now the default engine on iOS.

Apps can choose to continue using JSC by setting hermes_enabled to false in their Podfile.

The RNTester app now uses Hermes, as well. Use JSC in RNTester by setting USE_HERMES=0 when running pod install.

Changelog:

[iOS][Changed] Hermes is now the default engine on iOS. This setting is controlled via flags[:hermes_enabled] in the Podfile.

Reviewed By: cortinico, cipolleschi

Differential Revision: D37361468

Summary:
Hermes is now the default engine on iOS.

Apps can choose to continue using JSC by setting `hermes_enabled` to `false` in their Podfile.

The RNTester app now uses Hermes, as well. Use JSC in RNTester by setting `USE_HERMES=0` when running `pod install`.

Changelog:

[iOS][Changed] Hermes is now the default engine on iOS. This setting is controlled via `flags[:hermes_enabled]` in the Podfile.

Reviewed By: cortinico, cipolleschi

Differential Revision: D37361468

fbshipit-source-id: 1644977176120f0b1abffb8cda538b42b109c840
@facebook-github-bot facebook-github-bot added CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. p: Facebook Partner: Facebook Partner fb-exported labels Jun 27, 2022
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This pull request was exported from Phabricator. Differential Revision: D37361468

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Platform Engine Arch Size (bytes) Diff
android hermes arm64-v8a 7,829,582 +0
android hermes armeabi-v7a 7,216,286 +0
android hermes x86 8,139,445 +0
android hermes x86_64 8,120,377 +0
android jsc arm64-v8a 9,695,398 +0
android jsc armeabi-v7a 8,450,851 +0
android jsc x86 9,646,017 +0
android jsc x86_64 10,243,824 +0

Base commit: cf0a0ef
Branch: main

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Platform Engine Arch Size (bytes) Diff
ios - universal n/a --

Base commit: cf0a0ef
Branch: main

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This pull request was successfully merged by @hramos in 1115bc7.

When will my fix make it into a release? | Upcoming Releases

@react-native-bot react-native-bot added the Merged This PR has been merged. label Jun 28, 2022
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4 participants