How to fix npm ERR! Error: spawn sh ENOENT in npm

# Check current script-shell setting
npm config get script-shell

# Delete custom script-shell (restores default behavior)
npm config delete script-shell

# Verify it's removed
npm config get script-shell
# Should show "undefined" or the default value

npm config set script-shell "C:\\Windows\\System32\\cmd.exe"

# Check if System32 is in PATH
$env:Path -split ';' | Where-Object { $_ -like '*System32*' }

# Add System32 to PATH for current session
$env:Path = "C:\Windows\System32;$env:Path"

# Test if cmd works
cmd /c echo "PATH is working"

# Set Git Bash as the script shell
npm config set script-shell "C:\\Program Files\\Git\\bin\\bash.exe"

# Or if Git is installed in a different location, find it first:
where git

Test-Path "C:\Program Files\Git\bin\bash.exe"

FROM node:20-alpine

# Alpine uses ash, not bash - but /bin/sh is typically available
# If you need bash specifically:
RUN apk add --no-cache bash

# Ensure shell is available
RUN which sh && which bash

# Use a multi-stage build
FROM node:20 AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci

FROM gcr.io/distroless/nodejs20
COPY --from=builder /app/node_modules ./node_modules
COPY . .
CMD ["index.js"]

FROM debian:slim
RUN apt-get update && apt-get install -y --no-install-recommends \
    nodejs npm \
    && rm -rf /var/lib/apt/lists/*

const { spawn } = require('child_process');

// Instead of spawning directly:
// spawn('sh', ['-c', 'echo hello']);

// Use shell: true option:
spawn('echo', ['hello'], {
  shell: true,  // Node.js will use appropriate shell for platform
  stdio: 'inherit'
});

npm install cross-spawn

const spawn = require('cross-spawn');

// cross-spawn handles Windows shell issues automatically
const result = spawn.sync('npm', ['run', 'build'], {
  stdio: 'inherit'
});

# Check shell-related environment variables
$env:SHELL
$env:ComSpec
$env:COMSPEC

# ComSpec should point to cmd.exe
# If it's wrong, fix it:
$env:ComSpec = "C:\Windows\System32\cmd.exe"

# Or set it permanently via System Properties
[Environment]::SetEnvironmentVariable("ComSpec", "C:\Windows\System32\cmd.exe", "Machine")

# Check SHELL variable
echo $SHELL

# Should show /bin/bash, /bin/zsh, or similar
# If empty or wrong, set it:
export SHELL=/bin/bash

# .npmrc file
script-shell=/bin/bash

node --version
   npm --version
   npm config list

# Using nvm (recommended)
nvm uninstall current
nvm install --lts
nvm use --lts

# Clear npm cache
npm cache clean --force

# Verify shell configuration
npm config get script-shell

npm config edit  # Opens config file - delete problematic entries
# Or delete the entire config file
rm ~/.npmrc