aws amplify code example
Example 1: expo aws amplify
npm install expo-cli --global
Example 2: aws amplify angular example
amplify add auth
Example 3: shiny apps and aws amplify
$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
$ sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/'