F:\Projects\RHOSC\react-forms>yarn build
yarn run v1.22.5
$ node ./scripts/clean-build.js
$ yarn clean-build && lerna run build --concurrency 1 --ignore @data-driven-forms/react-renderer-demo
$ node ./scripts/clean-build.js
lerna notice cli v3.18.4
lerna info versioning independent
lerna notice filter excluding "@data-driven-forms/react-renderer-demo"
lerna info filter [ '!@data-driven-forms/react-renderer-demo' ]
lerna info Executing command in 9 packages: "yarn run build"
lerna ERR! yarn run build exited 1 in '@data-driven-forms/common'
lerna ERR! yarn run build stdout:
$ yarn build:cjs && yarn build:esm && yarn build:typings && yarn build:packages
$ BABEL_ENV=cjs babel src --out-dir ./
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

lerna ERR! yarn run build stderr:
'BABEL_ENV' is not recognized as an internal or external command,
operable program or batch file.
error Command failed with exit code 1.
error Command failed with exit code 1.

lerna ERR! yarn run build exited 1 in '@data-driven-forms/common'
lerna WARN complete Waiting for 1 child process to exit. CTRL-C to exit immediately.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.