fix cycle checker on windows

Author: connor4312

build/lib/tsb/builder.js

@@ -315,7 +315,7 @@ export function createTypeScriptBuilder(config: IConfiguration, projectFile: str
 						const jsValue = value.files.find(candidate => candidate.basename.endsWith('.js'));
 						if (jsValue) {
 							outHost.addScriptSnapshot(jsValue.path, new ScriptSnapshot(String(jsValue.contents), new Date()));
-							toBeCheckedForCycles.push(jsValue.path);
+							toBeCheckedForCycles.push(normalize(jsValue.path));
 						}
 
 					}).catch(e => {