linting

src/Module.js

@@ -8,16 +8,6 @@ import getLocation from './utils/getLocation';
 import makeLegalIdentifier from './utils/makeLegalIdentifier';
 import SOURCEMAPPING_URL from './utils/sourceMappingURL';
 
-function isEmptyExportedVarDeclaration ( node, exports, toExport ) {
-	if ( node.type !== 'VariableDeclaration' || node.declarations[0].init ) return false;
-
-	const name = node.declarations[0].id.name;
-
-	const id = exports.lookup( name );
-
-	return id && id.name in toExport;
-}
-
 function removeSourceMappingURLComments ( source, magicString ) {
 	const SOURCEMAPPING_URL_PATTERN = new RegExp( `\\/\\/#\\s+${SOURCEMAPPING_URL}=.+\\n?`, 'g' );
 	let match;

src/Scope.js

@@ -41,9 +41,7 @@ function underscorePrefix () {
 
 	var map = blank();
 
-	return function ( x ) {
-		return '_' + x + number( x );
-	}
+	return x => `_${x}${number( x )}`;
 }
 
 // ## Scope

src/Statement.js

@@ -91,6 +91,7 @@ export default class Statement {
 				switch ( node.type ) {
 					case 'FunctionDeclaration':
 						scope.addDeclaration( node, false, false );
+						break;
 
 					case 'BlockStatement':
 						if ( parent && /Function/.test( parent.type ) ) {