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feat(react-native): add event release mode to the build tooling #4617

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Merged
ablaszkiewicz merged 6 commits into from
Aug 27, 2026
Merged

feat(react-native): add event release mode to the build tooling #4617

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ecec4c6
feat(react-native): add event release mode to the build tooling
ablaszkiewicz Aug 24, 2026
d2ad784
fix(react-native): honor an environment release mode in the dSYM phase
ablaszkiewicz Aug 24, 2026
0dce61b
fix(react-native): gate event mode on the posthog-cli version
ablaszkiewicz Aug 26, 2026
f3478ab
fix(react-native): apply event mode to projects prebuilt by an older SDK
ablaszkiewicz Aug 26, 2026
b364b04
chore(react-native): pin an older posthog-cli in the Info.plist wrapp…
ablaszkiewicz Aug 26, 2026
9474ddb
fix(react-native): set the event mode posthog-cli floor to 0.16.0
ablaszkiewicz Aug 27, 2026
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7 changes: 7 additions & 0 deletions .changeset/react-native-event-release-mode.md
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'posthog-react-native': minor
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Add experimental event release mode to React Native builds. Set `releaseMode: 'event'` on the `posthog-react-native/expo` config plugin (or export `POSTHOG_RELEASE_MODE=event`, or set `posthog.releaseMode=event` in `android/gradle.properties`) and the build uploads its Hermes source maps, iOS dSYMs and Android R8 mappings without binding them to a release. Each exception then resolves its own release from the `$app_namespace` / `$app_version` / `$app_build` the SDK already sends, instead of inheriting the release of the symbols its frames resolved against. Use it when two releases can ship identical JavaScript or identical native code: symbol ids are derived from content, so the default `symbol-set` mode makes both releases report whichever one uploaded first. An unrecognized mode fails the build rather than falling back. The Hermes upload needs posthog-cli 0.16.0 or newer, which carries `--release-mode` on its `hermes` commands; an older one fails the build and names the upgrade.

The Android mapping upload needs the `com.posthog.android` gradle plugin 1.5.0 or newer, which reads `posthog.releaseMode`. A fresh prebuild now injects 1.5.1. A project whose `android/build.gradle` already has the classpath line keeps its version, so bump that line to 1.5.0 or newer by hand, or prebuild with `--clean`. On 1.4.0 the mapping stays bound to a release while the Hermes maps do not.
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