NPM 5 / NPM 6 / Yarn installations

install-comparisons.sh

#!/usr/bin/env bash
## @file                install-comparisons.sh
## @author              Jennifer Proust - proustibat@gmail.com
## @section DESCRIPTION	Compare installations times between NPM 5/ NPM6 and YARN

set -o errexit || true
set -o errtrace
set -o nounset
set -o pipefail
#set -o xtrace

RESULTDIR="install-results"
RESULTFILE="results.txt"
NPM5FILE=".stdout.npm5"
NPM6FILE=".stdout.npm6"
YARNFILE=".sdtout.yarn"

run() {
    printf ">>> LET'S GO\n"

    # gnu-time installation
    brew install gnu-time

    # Init files with some information
    printf "> Init results files...\n"
    rm -rf $RESULTDIR && mkdir $RESULTDIR
    export NVM_DIR="$HOME/.nvm"
    [ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"
    NVMVERSION="NVM `nvm --version`"
    CURRENTDIR=${PWD##*/}
    DATE=`date '+%Y-%m-%d %H:%M:%S'`
    printf "************************************************\n$CURRENTDIR\n$DATE\n...\n$NVMVERSION\n************************************************\n\n" | tee -a $RESULTDIR/$RESULTFILE

    # INSTALL WITH NPM 5
    installPackages npm5

    # INSTALL WITH NPM 6npm install npm@latest -g
    installPackages npm6

    # INSTALL WITH YARN
    installPackages yarn

    # LAST CLEAN
    clean

    # END
    printf "\n\n>>> ALL DONE!\n" | tee -a $RESULTDIR/$RESULTFILE

    open $RESULTDIR/results.txt
}

clean () {
    REPEAT=${1:-0}
    if [ $REPEAT != "repeat" ]
    then
        rm -rf yarn.lock package-lock.json
    fi
    rm -rf node_modules
    npm cache clean --force
    yarn cache clean
}

installPackages() {
    clean
    nvm install 9 && nvm use 9
    if [ $1 = "npm5" ]
    then
        printf "\n================================================\nINSTALLATION WITH NPM 5\n===============================================\n" | tee -a $RESULTDIR/$RESULTFILE
        npm install npm@5.6.0 -g
        printf "Node version: `node -v`\n" | tee -a $RESULTDIR/$RESULTFILE
        printf "NPM version: `npm -v`\n" | tee -a $RESULTDIR/$RESULTFILE
        runNPMInstall
        clean "repeat"
        runNPMInstall
        rm -rf node_modules
        runNPMInstall
    elif [ $1 = "npm6" ]
    then
        printf "\n================================================\nINSTALLATION WITH NPM 6\n================================================\n" | tee -a $RESULTDIR/$RESULTFILE
        npm install npm@6.0.0 -g
        printf "Node version: `node -v`\n" | tee -a $RESULTDIR/$RESULTFILE
        printf "NPM version: `npm -v`\n" | tee -a $RESULTDIR/$RESULTFILE
        runNPMInstall
        clean "repeat"
        runNPMInstall
        rm -rf node_modules
        runNPMInstall
    elif [ $1 = "yarn" ]
    then
        printf "\n================================================\nINSTALLATION WITH YARN \n================================================\n" | tee -a $RESULTDIR/$RESULTFILE
        brew install yarn --without-node || brew upgrade yarn
        printf "Node version: `node -v`\n" | tee -a $RESULTDIR/$RESULTFILE
        printf "Yarn version: `yarn --version`\n" | tee -a $RESULTDIR/$RESULTFILE
        runYarnInstall
        clean "repeat"
        runYarnInstall
        rm -rf node_modules
        runYarnInstall
    else
        echo "Error: this kind of installation is not supported!" | tee -a $RESULTDIR/$RESULTFILE
    fi

    printf "> Done!\n"
}

runNPMInstall() {
    gtime -f "\nREAL\t\tUSER\t\tSYS\t\n------------------------------------------------\n%E\t\t%U\t\t%S" -ao $RESULTDIR/$RESULTFILE npm install
}

runYarnInstall() {
    gtime -f "\nREAL\t\tUSER\t\tSYS\t\n------------------------------------------------\n%E\t\t%U\t\t%S" -ao $RESULTDIR/$RESULTFILE yarn install
}


run

Run the line below :

git clone https://gist.github.com/20b77c1e8c4ee663c2b6dd2a47a82fae.git ic-temp && cp ic-temp/install-comparisons.sh . && rm -rf ic-temp  && bash install-comparisons.sh && rm install-comparisons.sh