old_contents: #!/usr/bin/env node
  
  'use strict';
  
  const dependencyTree = require('../');
  const program = require('commander');
  
  program
    .version(require('../package.json').version)
    .usage('[options] <filename>')
    .option('-d, --directory <path>', 'location of files of supported filetypes')
    .option('-c, --require-config <path>', 'path to a requirejs config')
    .option('-w, --webpack-config <path>', 'path to a webpack config')
    .option('--list-form', 'output the list form of the tree (one element per line)')
    .parse(process.argv);
  
  let tree;
  
  const options = {
    filename: program.args[0],
    root: program.directory,
    config: program.requireConfig,
    webpackConfig: program.webpackConfig
  };
  
  if (program.listForm) {
    tree = dependencyTree.toList(options);
  
    tree.forEach(function(node) {
      console.log(node);
    });
  
  } else {
    tree = dependencyTree(options);
  
    console.log(JSON.stringify(tree));
  }
  
new_contents: #!/usr/bin/env node
  
  'use strict';
  
  const dependencyTree = require('../');
  const program = require('commander');
  
  program
    .version(require('../package.json').version)
    .usage('[options] <filename>')
    .option('-d, --directory <path>', 'location of files of supported filetypes')
    .option('-c, --require-config <path>', 'path to a requirejs config')
    .option('-w, --webpack-config <path>', 'path to a webpack config')
    .option('-t, --ts-config <path>', 'path to a typescript config')
    .option('--list-form', 'output the list form of the tree (one element per line)')
    .parse(process.argv);
  
  let tree;
  
  const options = {
    filename: program.args[0],
    root: program.directory,
    config: program.requireConfig,
    webpackConfig: program.webpackConfig,
    tsConfig: program.tsConfig
  };
  
  if (program.listForm) {
    tree = dependencyTree.toList(options);
  
    tree.forEach(function(node) {
      console.log(node);
    });
  
  } else {
    tree = dependencyTree(options);
  
    console.log(JSON.stringify(tree));
  }
  
subject: Add --tsconfig CLI option to specify a TypeScript config file