Summary:
At the moment we have to disable strict mode for the transform-es2015-modules-commonjs because strict mode leaks to the global scope and breaks the bridge. It was due to the way the polyfills were bundled in the package. To fix it, I wrapped the polyfill modules in an IIFE. Then when strict mode was enabled some polyfills were broken due to strict mode errors so that was fixed too. Also removed the IIFE from the polyfills that included one.
This diff doesn't enable the strict mode transform since some internal facebook modules depend on it not being enabled. When #5214 lands we could make the default babel config shipped with OSS react-native use strict mode modules and facebook could just modify the babel config to disable it if needed.
This will allow removing `"strict": false` from https://github.com/facebook/react-native/blob/master/packager/react-packager/.babelrc#L16Fixes#5316
Closes https://github.com/facebook/react-native/pull/5422
Reviewed By: svcscm
Differential Revision: D2846422
Pulled By: davidaurelio
fb-gh-sync-id: a3e2f8909aa87dabab2b872c61b887e80220fb56
Summary: public
Any uncaught exception inside an event emitter handler was reported as softError, which didn't crash the app, but left the app running in an unknown state. Since there's no way for the app to catch these softerror (to provide a fallback error view, etc), let's change it to report fatal error for uncaught exception for the time being.
Reviewed By: javache
Differential Revision: D2685322
fb-gh-sync-id: 52956d3db20809cc90448bd080795754b899435e
Janic Duplessis
Gabe Levi
Kevin Gozali
Ben Alpert