install-npm-package

#!/bin/bash
package_name="$1"
package_version="$2"

die() { echo "$@"; exit 1; }
run() { echo "$@"; "$@" || die "** $1 failed. Stop."; }
read_json() { node -p 'require("vm").runInNewContext(process.argv[2], JSON.parse(require("fs").readFileSync(process.argv[1], "utf8")))' -- "$1" "$2"; }

rm -f versions.json

if test -n "$package_version"; then
    # for Cairo (required by Stylus)
    export PKG_CONFIG_PATH=/opt/X11/lib/pkgconfig

    mkdir -p node_modules
    run npm install $package_name@$package_version

    actual_version="$(read_json node_modules/$package_name/package.json 'version')"
    test "$actual_version" = "$package_version" || die "** Version mismatch, $actual_version != $package_version. Stop."

    mkdir -p npm
    run mv node_modules/$package_name npm/$package_name-$package_version
    rmdir node_modules 2>/dev/null

    run $(dirname $0)/strip-craft
else
    npm --json info $package_name | read_json /dev/stdin 'JSON.stringify({versions: versions.map(function(v) { return v + " - " + time[v]; }), tags: this["dist-tags"]}, null, 2)'
fi