old_contents: var assert = require( 'assert' );
  var rollup = require( 'rollup' );
  var babelPlugin = require( '..' );
  
  process.chdir( __dirname );
  
  describe( 'rollup-plugin-babel', function () {
  	this.timeout( 5000 );
  
  	it( 'runs code through babel', function () {
  		var start = Date.now();
  		return rollup.rollup({
  			entry: 'samples/basic/main.js',
  			plugins: [ babelPlugin() ]
  		}).then( function ( bundle ) {
  			console.log( 'bundled in %s ms', Date.now() - start );
  
  			start = Date.now();
  			const generated = bundle.generate();
  			console.log( 'generated in %s ms', Date.now() - start );
  
  			const code = generated.code;
  
  			assert.ok( code.indexOf( 'const' ) === -1, code );
  		});
  	});
  
  	it( 'adds helpers', function () {
  		return rollup.rollup({
  			entry: 'samples/class/main.js',
  			plugins: [ babelPlugin() ]
  		}).then( function ( bundle ) {
  			const generated = bundle.generate();
  			const code = generated.code;
  
  			assert.ok( code.indexOf( 'babelHelpers.classCallCheck =' ) !== -1, generated.code );
  			assert.ok( code.indexOf( 'var _createClass =' ) === -1, generated.code );
  		});
  	});
  
  	it( 'does not add helpers unnecessarily', function () {
  		return rollup.rollup({
  			entry: 'samples/basic/main.js',
  			plugins: [ babelPlugin() ]
  		}).then( function ( bundle ) {
  			const generated = bundle.generate();
  			const code = generated.code;
  
  			assert.ok( code.indexOf( 'babelHelpers' ) === -1, generated.code );
  		});
  	});
  
  	it( 'does not babelify excluded code', function () {
  		return rollup.rollup({
  			entry: 'samples/exclusions/main.js',
  			plugins: [
  				babelPlugin({ exclude: '**/foo.js' })
  			]
  		}).then( function ( bundle ) {
  			const generated = bundle.generate();
  			const code = generated.code;
  
  			assert.ok( code.indexOf( '${foo()}' ) === -1, generated.code );
  			assert.ok( code.indexOf( '=> 42' ) !== -1, generated.code );
  		});
  	});
  });
  
new_contents: var assert = require( 'assert' );
  var rollup = require( 'rollup' );
  var babelPlugin = require( '..' );
  
  process.chdir( __dirname );
  
  describe( 'rollup-plugin-babel', function () {
  	this.timeout( 5000 );
  
  	it( 'runs code through babel', function () {
  		var start = Date.now();
  		return rollup.rollup({
  			entry: 'samples/basic/main.js',
  			plugins: [ babelPlugin() ]
  		}).then( function ( bundle ) {
  			start = Date.now();
  			const generated = bundle.generate();
  
  			const code = generated.code;
  
  			assert.ok( code.indexOf( 'const' ) === -1, code );
  		});
  	});
  
  	it( 'adds helpers', function () {
  		return rollup.rollup({
  			entry: 'samples/class/main.js',
  			plugins: [ babelPlugin() ]
  		}).then( function ( bundle ) {
  			const generated = bundle.generate();
  			const code = generated.code;
  
  			assert.ok( code.indexOf( 'babelHelpers.classCallCheck =' ) !== -1, generated.code );
  			assert.ok( code.indexOf( 'var _createClass =' ) === -1, generated.code );
  		});
  	});
  
  	it( 'does not add helpers unnecessarily', function () {
  		return rollup.rollup({
  			entry: 'samples/basic/main.js',
  			plugins: [ babelPlugin() ]
  		}).then( function ( bundle ) {
  			const generated = bundle.generate();
  			const code = generated.code;
  
  			assert.ok( code.indexOf( 'babelHelpers' ) === -1, generated.code );
  		});
  	});
  
  	it( 'does not babelify excluded code', function () {
  		return rollup.rollup({
  			entry: 'samples/exclusions/main.js',
  			plugins: [
  				babelPlugin({ exclude: '**/foo.js' })
  			]
  		}).then( function ( bundle ) {
  			const generated = bundle.generate();
  			const code = generated.code;
  
  			assert.ok( code.indexOf( '${foo()}' ) === -1, generated.code );
  			assert.ok( code.indexOf( '=> 42' ) !== -1, generated.code );
  		});
  	});
  });
  
subject: remove unnecessary logging