Revert "remove babel-core"
Revert "remove babel-core"

This reverts commit 6609422c1ae0813d60e0f549f99f2a3ae6c8b23b.

Semillas/semillas_backend,Semillas/semillas_platform,Semillas/semillas_platform,Semillas/semillas_platform,Semillas/semillas_backend,Semillas/semillas_backend,Semillas/semillas_platform,Semillas/semillas_backend