npx: the shell-auto-fallback argument has been removed

Question

I honestly don't remember what I last installed on my machine, I believe it was brewing gatsby-cli. Anyway, since yesterday morning my terminal has been giving me the following error when I open a new instance or reset the terminal (open a new tab, source ~/.zshrc, etc).

Last login: Tue Nov 17 10:40:14 on ttys000
npx: the --shell-auto-fallback argument has been removed.
See `npm help exec` for more information

It just loops that until I break the command with ^c, and even then the terminal is in basically a not valid state, it seems like the path hasn't fully loaded (i.e. commands in my .zshrc file, like alias commands, won't execute--command not found).

Note: I'm using iterm2.

Here is my zshrc:

# Enable Powerlevel10k instant prompt. Should stay close to the top of ~/.zshrc.
# Initialization code that may require console input (password prompts, [y/n]
# confirmations, etc.) must go above this block; everything else may go below.
if [[ -r "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-${(%):-%n}.zsh" ]]; then
  source "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-${(%):-%n}.zsh"
fi

# If you come from bash you might have to change your $PATH.
# export PATH=$HOME/bin:/usr/local/bin:$PATH

# Path to your oh-my-zsh installation.
export ZSH="/Users/earlem3/.oh-my-zsh"

# Set name of the theme to load --- if set to "random", it will
# load a random theme each time oh-my-zsh is loaded, in which case,
# to know which specific one was loaded, run: echo $RANDOM_THEME
# See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes
# ZSH_THEME="robbyrussell"
source /usr/local/opt/powerlevel10k/powerlevel10k.zsh-theme

# Set list of themes to pick from when loading at random
# Setting this variable when ZSH_THEME=random will cause zsh to load
# a theme from this variable instead of looking in $ZSH/themes/
# If set to an empty array, this variable will have no effect.
# ZSH_THEME_RANDOM_CANDIDATES=( "robbyrussell" "agnoster" )

# Uncomment the following line to use case-sensitive completion.
# CASE_SENSITIVE="true"

# Uncomment the following line to use hyphen-insensitive completion.
# Case-sensitive completion must be off. _ and - will be interchangeable.
# HYPHEN_INSENSITIVE="true"

# Uncomment the following line to disable bi-weekly auto-update checks.
# DISABLE_AUTO_UPDATE="true"

# Uncomment the following line to automatically update without prompting.
DISABLE_UPDATE_PROMPT="true"

# Uncomment the following line to change how often to auto-update (in days).
# export UPDATE_ZSH_DAYS=13

# Uncomment the following line if pasting URLs and other text is messed up.
# DISABLE_MAGIC_FUNCTIONS="true"

# Uncomment the following line to disable colors in ls.
# DISABLE_LS_COLORS="true"

# Uncomment the following line to disable auto-setting terminal title.
# DISABLE_AUTO_TITLE="true"

# Uncomment the following line to enable command auto-correction.
# ENABLE_CORRECTION="true"

# Uncomment the following line to display red dots whilst waiting for completion.
# COMPLETION_WAITING_DOTS="true"

# Uncomment the following line if you want to disable marking untracked files
# under VCS as dirty. This makes repository status check for large repositories
# much, much faster.
# DISABLE_UNTRACKED_FILES_DIRTY="true"

# Uncomment the following line if you want to change the command execution time
# stamp shown in the history command output.
# You can set one of the optional three formats:
# "mm/dd/yyyy"|"dd.mm.yyyy"|"yyyy-mm-dd"
# or set a custom format using the strftime function format specifications,
# see 'man strftime' for details.
# HIST_STAMPS="mm/dd/yyyy"

# Would you like to use another custom folder than $ZSH/custom?
# ZSH_CUSTOM=/path/to/new-custom-folder

# Which plugins would you like to load?
# Standard plugins can be found in $ZSH/plugins/
# Custom plugins may be added to $ZSH_CUSTOM/plugins/
# Example format: plugins=(rails git textmate ruby lighthouse)
# Add wisely, as too many plugins slow down shell startup.
plugins=(alias-finder brew common-aliases copydir copyfile docker docker-compose dotenv encode64 extract git jira jsontools node npm npx osx urltools vi-mode vscode web-search z)

source $ZSH/oh-my-zsh.sh

# User configuration

# export MANPATH="/usr/local/man:$MANPATH"

# You may need to manually set your language environment
# export LANG=en_US.UTF-8

# Preferred editor for local and remote sessions
if [[ -n $SSH_CONNECTION ]]; then
  export EDITOR='code'
else
  export EDITOR='nano'
fi

# Compilation flags
# export ARCHFLAGS="-arch x86_64"

# Set personal aliases, overriding those provided by oh-my-zsh libs,
# plugins, and themes. Aliases can be placed here, though oh-my-zsh
# users are encouraged to define aliases within the ZSH_CUSTOM folder.
# For a full list of active aliases, run `alias`.
#
# Example aliases
# alias zshconfig="mate ~/.zshrc"
# alias ohmyzsh="mate ~/.oh-my-zsh"
alias code="code-insiders"
alias iboss="/Applications/Utilities/iboss.app/gen4agent/reconfigure.sh reload"

source ~/.iterm2_shell_integration.zsh

# To customize prompt, run `p10k configure` or edit ~/.p10k.zsh.
[[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh

source /usr/local/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
source /usr/local/share/zsh-autosuggestions/zsh-autosuggestions.zsh

# following 3 commands are all for history-substring-search
source /usr/local/share/zsh-history-substring-search/zsh-history-substring-search.zsh
bindkey '^[OA' history-substring-search-up
bindkey '^[OB' history-substring-search-down

#anyenv
eval "$(anyenv init -)"

#nodenv
eval "$(nodenv init -)"

# NPX auto-fallback
source <(npx --shell-auto-fallback zsh)

Answer 1

Per the Readme for npx plugin in OhMyZsh github repo,

Since npm v7, npx has been moved to npm exec. With the move, the --shell-auto-fallback argument for npx has been removed:

Shell fallback functionality is removed, as it is not advisable.

When using npm v7, you'll get this error:

npx: the --shell-auto-fallback argument has been removed

If you get this error, just disable the plugin by removing it from the plugins array in your zshrc file. This plugin will no longer be maintained and will be removed in the future, when the older npx versions are no longer available.

As suggested, try removing npx from the following line in your .zshrc

plugins=(alias-finder brew common-aliases copydir copyfile docker docker-compose dotenv encode64 extract git jira jsontools node npm npx osx urltools vi-mode vscode web-search z)

.. also remove the last two line in your .zshrc

# NPX auto-fallback
source <(npx --shell-auto-fallback zsh)

Answer 2

Try removing the npx plugin from plugins=(...) in .zshrc. I had the same problem and that solved it for me.