bun install                    # Install all from package.json
bun install --frozen-lockfile  # CI mode: fail if lockfile needs update
bun install --no-save          # Install without updating package.json
bun install --production       # Skip devDependencies
bun install --dry-run          # Show what would be installed

bun add pkg                    # Add to dependencies
bun add pkg@version            # Add specific version
bun add -d pkg                 # Add to devDependencies (--dev)
bun add -D pkg                 # Same as -d
bun add --optional pkg         # Add to optionalDependencies
bun add -g pkg                 # Install globally
bun add --exact pkg            # Pin exact version (no ^)
bun remove pkg                 # Remove package

bun update                     # Update all packages
bun update pkg                 # Update specific package
bun outdated                   # Show outdated packages
bun info pkg                   # Show package metadata
bun info pkg versions          # List all available versions
bun pm ls                      # List installed packages
bun pm ls --all                # List all (including transitive)
bun pm hash                    # Print lockfile hash
bun pm cache                   # Show cache directory
bun pm cache rm                # Clear cache

bun link                       # Register current package as linkable
bun link pkg-name              # Link a registered package
bun pm pack                    # Create tarball of package
bun patch pkg                  # Start patching a package
bun patch --commit pkg-dir     # Apply patch

bun publish                    # Publish to npm
bun publish --dry-run          # Preview what would be published
bun publish --tag beta         # Publish with tag
bun publish --access public    # Set access level

bun file.ts                    # Run TypeScript/JavaScript directly
bun run script-name            # Run package.json script
bun script-name                # Short form (if no conflict with bun commands)
bun --watch file.ts            # Re-run on file changes
bun --hot file.ts              # Hot reload (preserves state)
bun --env-file .env file.ts    # Load env file
bun --env-file .env.local --env-file .env file.ts  # Multiple env files

bunx command                   # Run package binary (auto-installs if needed)
bunx --bun command             # Force Bun runtime for the command
bunx command@version           # Run specific version

bun --parallel run build lint typecheck    # Run all concurrently
bun --sequential run clean build deploy    # Run one after another

bun --filter 'pkg-name' run script    # Run in specific workspace
bun --filter '*' run script           # Run in all workspaces
bun --filter './apps/*' run build     # Run with glob pattern

bun run --smol file.ts         # Reduce memory usage (sacrifice throughput)
bun run --silent script        # Suppress script name echo
bun run --shell=bun script     # Use Bun's built-in shell (cross-platform, default on Windows)
bun run --shell=system script  # Use system shell (default on macOS/Linux)

bun ./index.html               # Start dev server, auto-bundles JS/TS/CSS
bun --hot ./index.html         # With hot module replacement

bun test                          # Run all test files
bun test file.test.ts             # Run specific file
bun test --filter "pattern"       # Filter by test name
bun test --timeout 10000         # Set timeout (ms)
bun test --bail                   # Stop on first failure
bun test --bail 5                 # Stop after 5 failures
bun test --rerun-each 3           # Run each test 3 times
bun test --only                   # Run only tests marked with .only
bun test --todo                   # Include .todo tests

bun test --coverage               # Enable code coverage
bun test --coverage-reporter text # Coverage format: text, lcov, json
bun test --coverage-dir ./cov     # Output directory

bun test --update-snapshots       # Update snapshot files

bun test --watch                  # Re-run on file changes

bun build ./src/index.ts --outdir ./dist           # Bundle to directory
bun build ./src/index.ts --outfile ./dist/out.js    # Bundle to single file
bun build ./src/index.ts --target browser           # Target: browser (default), bun, node
bun build ./src/index.ts --format esm               # Format: esm (default), cjs, iife
bun build ./src/index.ts --minify                   # Minify output
bun build ./src/index.ts --sourcemap external        # Sourcemaps: external, inline, linked, none
bun build ./src/index.ts --splitting                # Code splitting (ESM only)

bun build ./src/cli.ts --compile                    # Create self-contained executable
bun build ./src/cli.ts --compile --target bun-linux-x64    # Cross-compile
bun build ./src/cli.ts --compile --minify           # Minified executable

bun build --compile --target=browser ./app.tsx --outfile ./dist/app.html

bun build ... --external pkg        # Exclude from bundle
bun build ... --define 'KEY=VALUE'  # Define compile-time constants
bun build ... --loader .ext=type    # Custom loaders (js, jsx, ts, tsx, json, css, text, file, base64, dataurl, binary)
bun build ... --entry-naming [dir]/[name].[ext]   # Output naming pattern
bun build ... --public-path /cdn/   # Public path prefix for assets

bun init                       # Initialize new project (creates package.json, tsconfig.json, index.ts)
bun create template-name       # Create from template
bun create next-app my-app     # Example: create Next.js app

[run]
bun = true                     # Always use Bun runtime (not Node)

[install]
exact = true                   # Pin exact versions by default
peer = false                   # Don't auto-install peer deps
production = false             # Include devDeps
frozenLockfile = false         # Don't fail on lockfile mismatch
globalDir = "~/.bun/install/global"  # Global install location

[install.scopes]
"@myorg" = { token = "$NPM_TOKEN", url = "https://npm.pkg.github.com/" }

[test]
coverage = false               # Enable coverage by default
coverageReporter = ["text", "lcov"]
timeout = 5000                 # Default test timeout

[bundle]
entryPoints = ["./src/index.ts"]
outdir = "./dist"

bun --inspect file.ts              # Start debugger (WebSocket, connect via Chrome DevTools)
bun --inspect-wait file.ts         # Wait for debugger to attach before executing
bun --inspect-brk file.ts         # Break on first line
bun --cpu-prof file.ts             # Generate CPU profile
bun --cpu-prof-md file.ts          # CPU profile as Markdown (v1.3.7+)
bun --heap-prof file.ts            # Generate heap profile
bun --heap-prof-md file.ts         # Heap profile as Markdown (v1.3.7+)
BUN_JSC_logJITCodeForPerf=1 bun file.ts  # Linux perf integration

bun --env-file .env file.ts        # Load .env file
bun --env-file .env.local --env-file .env file.ts  # Load multiple (left takes precedence)

// Root package.json
{
  "workspaces": ["packages/*"],
  "catalog": {
    "react": "^19.0.0",
    "typescript": "^5.7.0"
  }
}

// packages/app/package.json
{
  "dependencies": {
    "react": "catalog:"
  }
}