old_contents: var path = require('path')
  
  var root = path.join(__dirname, '..')
  
  var BIN = path.join(root, 'node_modules', '.bin')
  var SRC = path.join(root, 'src')
  var DIST = path.join(root, 'dist')
  
  var SERVER = path.join(root, 'server.js')
  
  var HTML_INPUT = path.join(SRC, 'index.html')
  var HTML_OUTPUT = path.join(DIST, 'index.html')
  
  var JS_FULL_NAME = 'app.js'
  var JS_MIN_NAME = 'app.min.js'
  var JS_INPUT_PATH = path.join(SRC, 'scripts', JS_FULL_NAME)
  var JS_OUTPUT_PATH = path.join(DIST, JS_FULL_NAME)
  var JS_MIN_PATH = path.join(DIST, JS_MIN_NAME)
  
  var STATIC_NAME = 'static'
  
  var CSS_FULL_NAME = 'style.css'
  var CSS_MIN_NAME = 'style.min.css'
  var CSS_DIR = path.join(DIST, STATIC_NAME, 'stylesheets')
  var CSS_INPUT_PATH = path.join(CSS_DIR, CSS_FULL_NAME)
  var CSS_MIN_PATH = path.join(CSS_DIR, CSS_MIN_NAME)
  var CSS_FULL_RUNTIME = path.relative(DIST, CSS_INPUT_PATH)
  var CSS_MIN_RUNTIME = path.relative(DIST, CSS_MIN_PATH)
  
  module.exports = {
    BIN,
    SRC,
    DIST,
    RUN,
  
    STATIC_NAME,
  
    SERVER,
  
    HTML_INPUT,
    HTML_OUTPUT,
  
    JS_FULL_NAME,
    JS_MIN_NAME,
    JS_INPUT_PATH,
    JS_OUTPUT_PATH,
    JS_MIN_PATH,
  
    CSS_FULL_NAME,
    CSS_MIN_NAME,
    CSS_DIR,
    CSS_INPUT_PATH,
    CSS_MIN_PATH,
    CSS_FULL_RUNTIME,
    CSS_MIN_RUNTIME
  }
  
new_contents: var path = require('path')
  
  var root = path.join(__dirname, '..')
  
  var BIN = path.join(root, 'node_modules', '.bin')
  var SRC = path.join(root, 'src')
  var DIST = path.join(root, 'dist')
  
  var SERVER = path.join(root, 'server.js')
  
  var HTML_INPUT = path.join(SRC, 'index.html')
  var HTML_OUTPUT = path.join(DIST, 'index.html')
  
  var JS_FULL_NAME = 'app.js'
  var JS_MIN_NAME = 'app.min.js'
  var JS_INPUT_PATH = path.join(SRC, 'scripts', JS_FULL_NAME)
  var JS_OUTPUT_PATH = path.join(DIST, JS_FULL_NAME)
  var JS_MIN_PATH = path.join(DIST, JS_MIN_NAME)
  
  var STATIC_NAME = 'static'
  
  var CSS_FULL_NAME = 'style.css'
  var CSS_MIN_NAME = 'style.min.css'
  var CSS_DIR = path.join(DIST, STATIC_NAME, 'stylesheets')
  var CSS_INPUT_PATH = path.join(CSS_DIR, CSS_FULL_NAME)
  var CSS_MIN_PATH = path.join(CSS_DIR, CSS_MIN_NAME)
  var CSS_FULL_RUNTIME = path.relative(DIST, CSS_INPUT_PATH)
  var CSS_MIN_RUNTIME = path.relative(DIST, CSS_MIN_PATH)
  
  module.exports = {
    BIN,
    SRC,
    DIST,
  
    STATIC_NAME,
  
    SERVER,
  
    HTML_INPUT,
    HTML_OUTPUT,
  
    JS_FULL_NAME,
    JS_MIN_NAME,
    JS_INPUT_PATH,
    JS_OUTPUT_PATH,
    JS_MIN_PATH,
  
    CSS_FULL_NAME,
    CSS_MIN_NAME,
    CSS_DIR,
    CSS_INPUT_PATH,
    CSS_MIN_PATH,
    CSS_FULL_RUNTIME,
    CSS_MIN_RUNTIME
  }
  
subject: Fix missing env RUN