build.sh

#!/usr/bin/env bash
usage() { echo "Usage: $0 [-b optional <jit|aot> ]" 1>&2; exit 1; }

# parse our environment
unameOut="$(uname -s)"
case "${unameOut}" in
    Linux*)     machine=Linux;;
    Darwin*)    machine=Mac;;
    CYGWIN*)    machine=Cygwin;;
    MINGW*)     machine=MinGw;;
    *)          machine="UNKNOWN:${unameOut}"
esac

### build functions
pre_build() {
    echo "Installing dependencies..."
    yarn install
    echo "Dependencies installed."
}

build () {
    echo "Building ${1} with AOT compilation..."
    node --stack_size=4048 --max_old_space_size=8192 ./node_modules/@angular/cli/bin/ng "build" "--prod" "--aot" "--app=${1}"
    if [ $? -eq 0 ]
    then
        echo "Your app has been build with ahead-of-time compilation."
    else
        echo "Your AOT build has failed."
        exit 1;
    fi
}
### end build functions

# determine which apps we should build
while getopts a:s:r option
do
     case "${option}"
     in
         a) APP=${OPTARG};;
         s) SHA=${OPTARG};;
         r) REPORT_ONLY=true;;
     esac
done

# if an application was specified then build that app only
# if not, look for any applications that have changed between
# master and our current HEAD and build.
if [[ -n $APP ]]; then
    apps=($APP)
else
    if [[ -n $SHA ]]; then
       STARTING_SHA=${SHA}
    else
        STARTING_SHA=$(git merge-base origin/master HEAD)
    fi
    CURRENT_SHA=$(git rev-parse HEAD)
    if [[ -z $REPORT_ONLY ]]; then
        echo "Determining all changed applications starting at $STARTING_SHA and ending at $CURRENT_SHA..."
    fi
    TOBUILD=$(npm run affected:apps -s --  ${STARTING_SHA} ${CURRENT_SHA})
    if [[ -z $REPORT_ONLY ]]; then
        echo "Done!"
    fi
    apps=($TOBUILD)
fi

# if the apps array is empty, then nothing has changed and we're done here
if [ ${#apps[@]} -eq 0 ]; then
    echo "-1"
    exit 0
fi

# if the script is in report-only mode, return the array of
# applications that have changed
if [[ -n $REPORT_ONLY ]]; then
    echo ${apps[@]}
    exit 0
fi

# run the pre-build script
pre_build

# build each specified app
for i in ${apps[@]}; do build ${i}; done

# all done
echo "Build complete!"
exit 0