npm_and_yarn in /, /example for @react-native/babel-preset, @react-native/metro-config, @react-native/typescript-config, @react-native/babel-preset, @react-native/metro-config, @react-native/typescript-config - Update #1398458465

npm_and_yarn in /, /example for @react-native/babel-preset, @react-native/metro-config, @react-native/typescript-config, @react-native/babel-preset, @react-native/metro-config, @react-native/typescript-config - Update #1398458465 #756