🚀 Fast and simple Node.js version manager, built in Rust
Features
🌎 Cross-platform support (macOS, Windows, Linux)
✨ Single file, easy installation, instant startup
🚀 Built with speed in mind
📂 Works with .node-version and .nvmrc files
Installation
Using a script (macOS/Linux)
For bash, zsh and fish shells, there's an automatic installation script.
First ensure that curl and unzip are already installed on you operating system. Then execute:
curl -fsSL https://fnm.vercel.app/install | bashUpgrade
On macOS, it is as simple as brew upgrade fnm.
On other operating systems, upgrading fnm is almost the same as installing it. To prevent duplication in your shell config file add --skip-shell to install command.
Parameters
--install-dir
Set a custom directory for fnm to be installed. The default is $XDG_DATA_HOME/fnm (if $XDG_DATA_HOME is not defined it falls back to $HOME/.local/share/fnm on linux and $HOME/Library/Application Support/fnm on MacOS).
--skip-shell
Skip appending shell specific loader to shell config file, based on the current user shell, defined in $SHELL. e.g. for Bash, $HOME/.bashrc. $HOME/.zshrc for Zsh. For Fish - $HOME/.config/fish/conf.d/fnm.fish
--force-install
macOS installations using the installation script are deprecated in favor of the Homebrew formula, but this forces the script to install using it anyway.
Example:
curl -fsSL https://fnm.vercel.app/install | bash -s -- --install-dir "./.fnm" --skip-shellManually
Using Homebrew (macOS/Linux)
brew install fnmThen, set up your shell for fnm
Using Winget (Windows)
winget install Schniz.fnmUsing Scoop (Windows)
scoop install fnmThen, set up your shell for fnm
Using Chocolatey (Windows)
choco install fnmThen, set up your shell for fnm
Using Cargo (Linux/macOS/Windows)
cargo install fnmThen, set up your shell for fnm
Using a release binary (Linux/macOS/Windows)
- Download the latest release binary for your system
- Make it available globally on
PATHenvironment variable - Set up your shell for fnm
Removing
To remove fnm (😢), just delete the .fnm folder in your home directory. You should also edit your shell configuration to remove any references to fnm (ie. read Shell Setup, and do the opposite).
Completions
fnm ships its completions with the binary:
fnm completions --shell <SHELL>Where <SHELL> can be one of the supported shells:
bashzshfishpower-shell
Please follow your shell instructions to install them.
Shell Setup
Environment variables need to be setup before you can start using fnm.
This is done by evaluating the output of fnm env.
Note
Check out the Configuration section to enable highly recommended features, like automatic version switching.
Adding a .node-version to your project is as simple as:
$ node --version
v14.18.3
$ node --version > .node-versionCheck out the following guides for the shell you use:
Bash
Add the following to your .bashrc profile:
eval "$(fnm env --use-on-cd --shell bash)"Zsh
Add the following to your .zshrc profile:
eval "$(fnm env --use-on-cd --shell zsh)"Fish shell
Create ~/.config/fish/conf.d/fnm.fish and add this line to it:
fnm env --use-on-cd --shell fish | sourcePowerShell
Add the following to the end of your profile file:
fnm env --use-on-cd --shell power-shell | Out-String | Invoke-Expression- For macOS/Linux, the profile is located at
~/.config/powershell/Microsoft.PowerShell_profile.ps1 - On Windows to edit your profile you can run this in a PowerShell
notepad $profile
Windows Command Prompt aka Batch aka WinCMD
fnm is also supported but is not entirely covered. You can set up a startup script and append the following lines:
@echo off
:: for /F will launch a new instance of cmd so we create a guard to prevent an infnite loop
if not defined FNM_AUTORUN_GUARD (
set "FNM_AUTORUN_GUARD=AutorunGuard"
FOR /f "tokens=*" %%z IN ('fnm env --use-on-cd') DO CALL %%z
)Usage with Cmder
Usage is very similar to the normal WinCMD install, apart for a few tweaks to allow being called from the cmder startup script. The example assumes that the CMDER_ROOT environment variable is set to the root directory of your Cmder installation.
Then you can do something like this:
- Make a .cmd file to invoke it
:: %CMDER_ROOT%\bin\fnm_init.cmd
@echo off
FOR /f "tokens=*" %%z IN ('fnm env --use-on-cd') DO CALL %%z- Add it to the startup script
:: %CMDER_ROOT%\config\user_profile.cmd
call "%CMDER_ROOT%\bin\fnm_init.cmd"You can replace %CMDER_ROOT% with any other convenient path too.
See the available configuration options for an extended configuration documentation
See the available commands for an extended usage documentation
Contributing
PRs welcome 🎉
Developing:
# Install Rust
git clone https://github.com/Schniz/fnm.git
cd fnm/
cargo buildRunning Binary:
cargo run -- --help # Will behave like `fnm --help`Running Tests:
cargo test