Quicknvm

NVM auto-detection, but quick

This implements auto-detecting (and auto-installing) the correct NVM version based on .nvmrc files, and does it in a way compatible with NVM. It also properly detects IO.js installations in an NVM-compatible way.

Motivation

I use NVM, but it's kinda slow and wanted something fully compatible but fast.

This only implements automatic Node version detection and installation, it doesn't support commands of any sort.

Install

Get the Rust compiler if you don't have it already and run

cargo build --release

Then copy the newly compiled binary at target/release/quicknvm to somewhere in your PATH

Usage

Add this to your .zshrc

autoload -U add-zsh-hook
load-quicknvm() {
  local new_version=$(quicknvm)

  if [[ $new_version ]]; then
    eval "$new_version"
  fi
}
add-zsh-hook chpwd load-quicknvm
load-quicknvm

Supported .nvmrc values

Quicknvm should support most NVM .nvmrc supported values

Syntax	Description	Example	Example outcome
lts/codename	LTS by codename	lts/argon	uses argon LTS
lts/*	latest LTS	lts/*	uses latest installed LTS (hydrogen at time of writing)
lts/-N	relative LTS	lts/-3	uses 3 LTS versions behind latest
default	default version	default	uses the default NVM version, see below
system	system-installed version	system	uses the system non-NVM managed version of Node.js if any
stable	latest stable version	stable	uses the latest stable installed version
node	latest stable version	node	uses the latest stable installed version
iojs	latest stable IO.js version	iojs	uses the latest stable installed IO.js version

Unsupported .nvmrc values

The only noteworthy value is probably unstable which is only for Node.js pre-v1.

Setting the default

You can set the default NVM version by running

nvm alias default VERSION_STRING

where VERSION_STRING can be any of the values in the table above except for default

License

MIT