Command Line Interface

6to5 [options] <files...>

6to5-node <script> [arguments]  # Run Node.js with 6to5 transformation
6to5-minify <files...>          # Transform and minify files
6to5-runtime                    # Generate runtime helpers

# Transform single file
6to5 script.js --out-file script-compiled.js

# Transform directory
6to5 src --out-dir lib

# Read from stdin, write to stdout
echo "const fn = () => {};" | 6to5

# Specify input filename for stdin
echo "const fn = () => {};" | 6to5 --filename input.js

# Generate external source maps
6to5 script.js --out-file script.js --source-maps

# Inline source maps
6to5 script.js --out-file script.js --source-maps-inline

# Generate source maps (filename will be automatically determined)
6to5 script.js --out-file script.js --source-maps

# CommonJS (default)
6to5 script.js --out-file script.js --modules common

# AMD modules
6to5 script.js --out-file script.js --modules amd

# UMD modules
6to5 script.js --out-file script.js --modules umd

# SystemJS modules
6to5 script.js --out-file script.js --modules system

# No module transformation
6to5 script.js --out-file script.js --modules ignore

# Enable specific transformers only (whitelist)
6to5 script.js --out-file script.js --whitelist es6.arrowFunctions,es6.classes

# Disable specific transformers (blacklist)
6to5 script.js --out-file script.js --blacklist es6.modules

# Enable optional transformers
6to5 script.js --out-file script.js --optional es7.comprehensions,es7.objectRestSpread

# Enable loose mode for specific transformers
6to5 script.js --out-file script.js --loose es6.classes,es6.modules

# Enable experimental ES7 features
6to5 script.js --out-file script.js --experimental

# Enable playground features
6to5 script.js --out-file script.js --playground

# Use runtime helpers
6to5 script.js --out-file script.js --runtime

# React compatibility mode
6to5 script.js --out-file script.js --react-compat

# Watch mode - recompile on changes
6to5 src --out-dir lib --watch

# Remove comments from output
6to5 script.js --out-file script.js --remove-comments

# Add auxiliary comment
6to5 script.js --out-file script.js --auxilary-comment "Generated by build system"

# Insert module IDs
6to5 src --out-dir lib --module-ids

# Keep extensions in module IDs
6to5 src --out-dir lib --module-ids --keep-module-id-extensions

Usage: 6to5 [options] <files ...>

Options:
  -t, --source-maps-inline        Append sourceMappingURL comment to bottom of code
  -s, --source-maps              Save source map alongside the compiled code
  -f, --filename [filename]      Filename to use when reading from stdin [stdin]
  -w, --watch                    Recompile files on changes
  -r, --runtime                  Replace 6to5 declarations with references to a runtime
  -e, --experimental             Enable experimental support for proposed ES7 features
  -p, --playground               Enable playground support
  -m, --modules [modules]        Module formatter type to use [common]
  -l, --whitelist [whitelist]    Whitelist of transformers to ONLY use
  -b, --blacklist [blacklist]    Blacklist of transformers to NOT use
  -i, --optional [list]          List of optional transformers to enable
  -L, --loose [list]             List of transformers to enable loose mode ON
  -o, --out-file [out]           Compile all input files into a single file
  -d, --out-dir [out]            Compile an input directory of modules into an output directory
  -c, --remove-comments          Remove comments from the compiled code
  -M, --module-ids               Insert module id in modules
  -R, --react-compat             Makes the react transformer produce pre-v0.12 code
  --keep-module-id-extensions    Keep extensions when generating module ids
  -a, --auxilary-comment [comment] Comment text to prepend to all auxiliary code
  -V, --version                  Output the version number
  -h, --help                     Output usage information

# Transform single file
6to5 input.js --out-file output.js

# Transform with source maps
6to5 input.js --out-file output.js --source-maps

# Transform to AMD format
6to5 input.js --out-file output.js --modules amd

# Transform entire directory
6to5 src --out-dir lib

# Transform with watch mode
6to5 src --out-dir lib --watch

# Transform with filtering
6to5 src --out-dir lib --blacklist es6.modules

# Full ES6+ transformation with ES7 features
6to5 src --out-dir dist \
  --modules umd \
  --source-maps \
  --experimental \
  --optional es7.comprehensions,es7.objectRestSpread \
  --runtime \
  --module-ids

# Minimal transformation (only syntax changes)
6to5 src --out-dir lib \
  --whitelist es6.arrowFunctions,es6.classes,es6.templateLiterals \
  --loose es6.classes

# React JSX transformation
6to5 src --out-dir lib \
  --optional react \
  --modules common \
  --react-compat

# Package.json scripts
{
  "scripts": {
    "build": "6to5 src --out-dir lib --source-maps",
    "build:watch": "6to5 src --out-dir lib --watch",
    "build:production": "6to5 src --out-dir dist --modules umd --remove-comments",
    "build:es7": "6to5 src --out-dir lib --experimental --optional es7.comprehensions"
  }
}

# Makefile
build:
	6to5 src --out-dir lib --source-maps

watch:
	6to5 src --out-dir lib --watch

production:
	6to5 src --out-dir dist --modules umd --remove-comments --runtime

clean:
	rm -rf lib dist

.PHONY: build watch production clean

#!/bin/bash
# build.sh

set -e

echo "Building JavaScript..."

# Clean previous build
rm -rf dist

# Transform ES6+ to ES5
6to5 src --out-dir dist \
  --modules common \
  --source-maps \
  --optional es7.objectRestSpread \
  --runtime \
  --remove-comments

echo "Build complete!"

# Run tests on built code
node dist/test/index.js

#!/bin/bash
# 6to5-config.sh

# Default options for this project
DEFAULT_OPTS="--modules common --optional es7.comprehensions --loose es6.classes"

case "$1" in
  "dev")
    6to5 src --out-dir lib $DEFAULT_OPTS --watch --source-maps-inline
    ;;
  "prod")
    6to5 src --out-dir dist $DEFAULT_OPTS --runtime --remove-comments
    ;;
  "test")
    6to5 test --out-dir test-compiled $DEFAULT_OPTS
    ;;
  *)
    echo "Usage: $0 {dev|prod|test}"
    exit 1
    ;;
esac

# Run Node.js script with 6to5 transformation
6to5-node app.js

# Pass Node.js flags
6to5-node --harmony app.js

# Debug mode
6to5-node --debug app.js

# With arguments
6to5-node app.js arg1 arg2

# Exit on error
set -e

# Transform with error checking
if ! 6to5 src --out-dir lib; then
  echo "Build failed!"
  exit 1
fi

# Conditional transformation
if [ -d "src" ]; then
  6to5 src --out-dir lib
else
  echo "Source directory not found"
  exit 1
fi

# CI build script
#!/bin/bash

# Install dependencies
npm install

# Lint source code
npm run lint

# Transform ES6+ to ES5
6to5 src --out-dir lib --modules common --runtime

# Run tests on transformed code
npm test

# Check that all files were transformed
if [ ! -f "lib/index.js" ]; then
  echo "Build incomplete!"
  exit 1
fi

echo "CI build successful"

#!/bin/bash
# deploy.sh

echo "Starting deployment build..."

# Clean and create directories
rm -rf dist
mkdir -p dist

# Transform for different environments
echo "Building for Node.js..."
6to5 src --out-dir dist/node --modules common --runtime

echo "Building for browser..."
6to5 src --out-dir dist/browser --modules umd --runtime

echo "Building minified version..."
6to5 src --out-file dist/bundle.min.js --modules umd --remove-comments --runtime

echo "Deployment build complete!"