Fix resolver issue

lib/DojoAMDResolverPlugin.js

@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 const path = require("path");
-const async = require("async");
 
 module.exports = class DojoAMDResolverPlugin {
 	constructor(dojoRequire) {
@@ -23,25 +22,17 @@ module.exports = class DojoAMDResolverPlugin {
 
 	apply(resolver) {
 		resolver.plugin('module', (request, callback) => {
-			if (request.directory) return;
-			const url = this.dojoRequire.toUrl(request.request, {mid: path.join(request.path, "x").replace(/\\/g, "/")});
-			if (url && url != request.request) {
-				let answer;
-				async.each([url, url+".js"], (tryUrl, cb) =>{
-					const obj = {
-							path: tryUrl,
-							query: request.query,
-							directory: request.directory
-					};
-					const message = "Dojo resolve '" + request + "' in '" + path;
-					resolver.doResolve(['file'], obj, message, (err, result) => {
-						if (result) {
-							answer = result;
-						}
-						cb();
-					});
-				}, function() {
-					callback(null, answer);
+			if (request.directory) return;
+			const url = this.dojoRequire.toUrl(request.request, {mid: path.join(request.path, "x").replace('\\', '/')});
+			if (url && url != request.request) {
+				const obj = {
+						path: path.normalize(url),	// sets path separators to platform specific values
+						query: request.query,
+						directory: request.directory
+				};
+				const message = `Dojo resolve ${obj.path} from ${request.request} in ${request.path}`;
+				resolver.doResolve(['raw-file'], obj, message, (err, result) => {
+					callback(null, result);
 				});
 			} else {
 				return callback();