CI nvm starter

NVM Start.md

Easy NVM start for CI and other environments

This script assumes nvm is already installed on your machine, but does not assume that nvm is set up for your current environment

It will attempt to set up nvm for the current environment, then install the desired node version and any needed global packages that are missing

It will keep the existing version of nvm if it finds it already set up in the environment

Usage

Invoke with

• First arg for required node version
• Following args for required npm global packages

Example

Say you placed the script in $HOME and need node 8 with gulp and localtunnel, you could run

[ -s "$HOME/nvm-start.sh" ] && . "$HOME/nvm-start.sh" 8 gulp localtunnel

nvm-start.sh

#!/usr/bin/env bash

warn() {
    echo "$@" 1>&2
}

setup() {
    [ -z "$NVM_DIR" ] \
        && [ -s "$HOME/.nvm" ] \
        && export NVM_DIR="$HOME/.nvm"
    [ ! -z "$NVM_DIR" ] \
        && [ ! "$(command -v nvm)" ] \
        && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
    [ ! -z "$1" ] \
        && [ "$(command -v nvm)" ] \
        && nvm install "$1"
}

test() {
    [ ! "$(command -v nvm)" ] && warn "nvm is not set up"
    [ ! -x "$(command -v node)" ] && warn "node is not set up"
    [ ! -x "$(command -v npm)" ] && warn "npm is not set up"
}

install() {
    [ -x "$(command -v npm)" ] && for module in "$@"; do
        [ ! -x "$(command -v $module)" ] && npm i -g "$module"
    done
}

setup $1
test
install "${@:2}"