How to fix FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory in npm

# Via environment variable
export NODE_OPTIONS="--max-old-space-size=8192"

# For specific command
node --max-old-space-size=8192 script.js

# In npm script
"build": "node --max-old-space-size=4096 ./node_modules/.bin/webpack"

npm ci

npm cache clean --force
rm -rf node_modules
npm install

# Watch memory usage
while true; do
  ps aux | grep node | awk '{print $6/1024 " MB"}'
  sleep 1
done

// webpack.config.js
module.exports = {
  optimization: {
    splitChunks: { chunks: 'all' },
    usedExports: true
  },
  // Disable source maps in production
  devtool: false
};

node -p "process.arch"
# Should show "x64" for 64-bit

# 32-bit has much lower memory limits