Condenser: Error: Requires Babel "^7.0.0-0", but was loaded with "6.26.0".

git clone https://gitlab.syncad.com/hive/condenser
cd condenser
mkdir tmp


Ao usa yarn add babel-cli estava dando esse erro:

Error: Requires Babel "^7.0.0-0", but was loaded with "6.26.0".

Resolvi o problema usando:

yarn add @babel/cli @babel/core @babel/node @babel/preset-env -D
yarn install --frozen-lockfile --ignore-optional
yarn run build


Ou foi alguma solução daqui