dify/web/scripts

Production Build Optimization Scripts

optimize-standalone.js

This script removes unnecessary development dependencies from the Next.js standalone build output to reduce the production Docker image size.

What it does

The script specifically targets and removes jest-worker packages that are bundled with Next.js but not needed in production. These packages are included because:

1. Next.js includes jest-worker in its compiled dependencies
2. terser-webpack-plugin (used by Next.js for minification) depends on jest-worker
3. pnpm’s dependency resolution creates symlinks to jest-worker in various locations

Usage

The script is automatically run during Docker builds via the build:docker npm script:

# Docker build (removes jest-worker after build)
pnpm build:docker

To run the optimization manually:

node scripts/optimize-standalone.js

What gets removed

• node_modules/.pnpm/next@*/node_modules/next/dist/compiled/jest-worker
• node_modules/.pnpm/terser-webpack-plugin@*/node_modules/jest-worker (symlinks)
• node_modules/.pnpm/jest-worker@* (actual packages)

Impact

Removing jest-worker saves approximately 36KB per instance from the production image. While this may seem small, it helps ensure production images only contain necessary runtime dependencies.