Benchmark different Node package managers

benchmark.sh

#!/usr/bin/env bash
output=result.csv
> $output

benchmark () {
    echo "Benchmarking $1"
    pnpm run clean:all
    # * `date` does not support milliseconds in macos
    from=$(perl -MTime::HiRes=time -e 'printf "%.9f\n", time')
    eval $2
    to=$(perl -MTime::HiRes=time -e 'printf "%.9f\n", time')
    result=$(echo $from $to | awk '{print $2 - $1}')
    echo $result
    echo "$1,$result" >> $output
} 

rm -f pnpm-lock.yaml
benchmark "pnpm without lockfile" "pnpm install" 
benchmark "pnpm with lockfile"  "pnpm install"

rm -f yarn.lock
benchmark "Yarn without lockfile"  "yes '' | yarn install"
benchmark "Yarn with lockfile" "yes '' | yarn install" 

rm -f package-lock.json
benchmark "npm without lockfile" "npm install --legacy-peer-deps"
benchmark "npm with lockfile" "npm install --legacy-peer-deps"