fix noConflict when used via config file (#846)

bin/src/runRollup.js

@@ -70,7 +70,7 @@ export default function runRollup ( command ) {
 			});
 
 			// temporarily override require
-			var defaultLoader = require.extensions[ '.js' ];
+			const defaultLoader = require.extensions[ '.js' ];
 			require.extensions[ '.js' ] = ( m, filename ) => {
 				if ( filename === config ) {
 					m._compile( code, filename );
@@ -147,9 +147,6 @@ function execute ( options, command ) {
 
 	options.external = external;
 
-	options.noConflict = command.conflict === false;
-	delete command.conflict;
-
 	// Use any options passed through the CLI as overrides.
 	Object.keys( equivalents ).forEach( cliOption => {
 		if ( command.hasOwnProperty( cliOption ) ) {

test/cli/no-conflict/_config.js

@@ -0,0 +1,4 @@
+module.exports = {
+	description: 'respects noConflict option',
+	command: 'rollup --config rollup.config.js'
+};

test/cli/no-conflict/_expected.js

@@ -0,0 +1,16 @@
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+	typeof define === 'function' && define.amd ? define(factory) :
+	(function() {
+		var current = global.conflictyName;
+		var exports = factory();
+		global.conflictyName = exports;
+		exports.noConflict = function() { global.conflictyName = current; return exports; };
+	})();
+}(this, (function () { 'use strict';
+
+var main = {};
+
+return main;
+
+})));

test/cli/no-conflict/main.js

@@ -0,0 +1 @@
+export default {};

test/cli/no-conflict/rollup.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+	entry: 'main.js',
+	format: 'umd',
+	moduleName: 'conflictyName',
+	noConflict: true
+};