React-Native assembleRelease fails for task ':app:bundleReleaseJsAndAssets'

Question

When I run ./gradlew assembleRelease build is failed with this error:

Error:Execution failed for task \':app:bundleReleaseJsAndAsse         


        

Answer 1

As of RN 0.58, for CI builds the commands is as follows:

First create directories:

mkdir -p app/build/generated/assets/react/production/release/ && mkdir -p app/build/generated/res/react/production/release

Next:

node ../node_modules/react-native/local-cli/cli.js bundle --platform android --dev false --entry-file index.android.js --bundle-output app/build/generated/assets/react/production/release/index.android.bundle --assets-dest app/build/generated/res/react/production/release --max-workers 1 --reset-cache

Also you may also want to add for your production builds according to this;

--minify true

Taken from RN's source

NOTE: We added --max-workers 1 not to deplete CI resources since they are limited to lower numbers (mem&cpu).