#!/bin/bash
# Use as alternative to npm to run in local node.js environment
# REQUIRES python3, else falls back to system-wide npm

set -e

which python3 > /dev/null 2>&1 || ( npm "$@" && exit 0 )

dir=$(dirname $0)

test -x "${dir}/.env/bin/nodeenv" || ( virtualenv -p python3 "${dir}/.env" && "${dir}/.env/bin/pip" install --upgrade nodeenv )
test -f "${dir}/.env/node/bin/activate" || "${dir}/.env/bin/nodeenv" --node=6.9.5 --force "${dir}/.env/node"
PATH="${dir}/.env/node/bin:${PATH}" npm "$@"