iife finaliser

README.md

@@ -102,7 +102,7 @@ rollup.rollup( 'app.js', {
 }).then( function ( bundle ) {
   // generate code and a sourcemap
   const { code, map } = bundle.generate({
-    // output format - 'amd', 'cjs', 'es6', 'umd'
+    // output format - 'amd', 'cjs', 'es6', 'iife', 'umd'
     format: 'amd',
 
     // exports - 'auto', 'none', 'default', 'named'

src/finalisers/iife.js

@@ -0,0 +1,11 @@
+export default function es6 ( bundle, magicString, exportMode, options ) {
+
+	const intro = `(function () { 'use strict';\n\n`;
+	const outro = `\n\n})();`;
+
+	return magicString
+		.trim()
+		.indent()
+		.prepend( intro )
+		.append( outro );
+}

src/finalisers/index.js

@@ -1,6 +1,7 @@
 import amd from './amd';
 import cjs from './cjs';
 import es6 from './es6';
+import iife from './iife';
 import umd from './umd';
 
-export default { amd, cjs, es6, umd };
+export default { amd, cjs, es6, iife, umd };

test/form/no-imports-or-exports/_expected/iife.js

@@ -0,0 +1,5 @@
+(function () { 'use strict';
+
+	console.log( 'this is it' );
+
+})();

test/test.js

@@ -125,36 +125,39 @@ describe( 'rollup', function () {
 			{ format: 'amd' },
 			{ format: 'cjs' },
 			{ format: 'es6' },
+			{ format: 'iife' },
 			{ format: 'umd' }
 		];
 
 		sander.readdirSync( FORM ).sort().forEach( function ( dir ) {
 			if ( dir[0] === '.' ) return; // .DS_Store...
 
-			var config;
+			describe( dir, function () {
+				var config;
 
-			try {
-				config = require( FORM + '/' + dir + '/_config' );
-			} catch ( err ) {
-				config = { description: dir };
-			}
+				try {
+					config = require( FORM + '/' + dir + '/_config' );
+				} catch ( err ) {
+					config = { description: dir };
+				}
 
-			var bundlePromise = rollup.rollup( FORM + '/' + dir + '/main.js', extend( {}, config.options ) );
+				var bundlePromise = rollup.rollup( FORM + '/' + dir + '/main.js', extend( {}, config.options ) );
 
-			profiles.forEach( function ( profile ) {
-				( config.skip ? it.skip : config.solo ? it.only : it )( dir + ' (' + profile.format + ')', function () {
-					return bundlePromise.then( function ( bundle ) {
-						var actual = bundle.generate({
-							format: profile.format
-						}).code.trim();
+				profiles.forEach( function ( profile ) {
+					( config.skip ? it.skip : config.solo ? it.only : it )( 'generates ' + profile.format, function () {
+						return bundlePromise.then( function ( bundle ) {
+							var actual = bundle.generate({
+								format: profile.format
+							}).code.trim();
 
-						try {
-							var expected = sander.readFileSync( FORM, dir, '_expected', profile.format + '.js' ).toString().trim();
-						} catch ( err ) {
-							assert.equal( actual, 'missing file' );
-						}
+							try {
+								var expected = sander.readFileSync( FORM, dir, '_expected', profile.format + '.js' ).toString().trim();
+							} catch ( err ) {
+								assert.equal( actual, 'missing file' );
+							}
 
-						assert.equal( actual, expected );
+							assert.equal( actual, expected );
+						});
 					});
 				});
 			});