es6 -> es

src/Bundle.js

@@ -278,7 +278,12 @@ export default class Bundle {
 	}
 
 	render ( options = {} ) {
-		const format = options.format || 'es6';
+		if ( options.format === 'es6' ) {
+			this.onwarn( 'The es6 format is deprecated – use `es` instead' );
+			options.format = 'es';
+		}
+
+		const format = options.format || 'es';
 
 		// Determine export mode - 'default', 'named', 'none'
 		const exportMode = getExportMode( this, options.exports, options.moduleName );
@@ -287,7 +292,7 @@ export default class Bundle {
 		let usedModules = [];
 
 		this.orderedModules.forEach( module => {
-			const source = module.render( format === 'es6' );
+			const source = module.render( format === 'es' );
 			if ( source.toString().length ) {
 				magicString.addSource( source );
 				usedModules.push( module );

src/Declaration.js

@@ -42,8 +42,8 @@ export default class Declaration {
 		if ( reference.isReassignment ) this.isReassigned = true;
 	}
 
-	render ( es6 ) {
-		if ( es6 ) return this.name;
+	render ( es ) {
+		if ( es ) return this.name;
 		if ( !this.isReassigned || !this.exportName ) return this.name;
 
 		return `exports.${this.exportName}`;
@@ -280,18 +280,18 @@ export class ExternalDeclaration {
 		}
 	}
 
-	render ( es6 ) {
+	render ( es ) {
 		if ( this.name === '*' ) {
 			return this.module.name;
 		}
 
 		if ( this.name === 'default' ) {
-			return this.module.exportsNamespace || ( !es6 && this.module.exportsNames ) ?
+			return this.module.exportsNamespace || ( !es && this.module.exportsNames ) ?
 				`${this.module.name}__default` :
 				this.module.name;
 		}
 
-		return es6 ? this.safeName : `${this.module.name}.${this.name}`;
+		return es ? this.safeName : `${this.module.name}.${this.name}`;
 	}
 
 	run () {

src/Module.js

@@ -444,7 +444,7 @@ export default class Module {
 		return statements;
 	}
 
-	render ( es6 ) {
+	render ( es ) {
 		let magicString = this.magicString.clone();
 
 		this.statements.forEach( statement => {
@@ -488,7 +488,7 @@ export default class Module {
 						const declaration = this.declarations[ name ];
 
 						if ( declaration.exportName && declaration.isReassigned ) {
-							magicString.insertLeft( statement.end, `;\nexports.${name} = ${declaration.render( es6 )}` );
+							magicString.insertLeft( statement.end, `;\nexports.${name} = ${declaration.render( es )}` );
 						}
 					});
 				}
@@ -513,7 +513,7 @@ export default class Module {
 				const declaration = reference.declaration;
 
 				if ( declaration ) {
-					const name = declaration.render( es6 );
+					const name = declaration.render( es );
 
 					// the second part of this check is necessary because of
 					// namespace optimisation – name of `foo.bar` could be `bar`

src/finalisers/es6.js → src/finalisers/es.js

@@ -4,7 +4,7 @@ function notDefault ( name ) {
 	return name !== 'default';
 }
 
-export default function es6 ( bundle, magicString ) {
+export default function es ( bundle, magicString ) {
 	const importBlock = bundle.externalModules
 		.map( module => {
 			const specifiers = [];

src/finalisers/index.js

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