Removed forced opening of files when compiling with tsserver

This is no longer needed because the server does not loose track of
files. Reverts commit babde9c.

Author: lorenzodallavecchia

eclipse/ts.eclipse.ide.core/src/ts/eclipse/ide/internal/core/resources/IDETypeScriptProject.java

@@ -388,13 +388,12 @@ protected ITypeScriptLint createTslint(File tslintFile, File tslintJsonFile, Fil
 	@Override
 	public void compileWithTsserver(List<IFile> updatedTsFiles, List<IFile> removedTsFiles, IProgressMonitor monitor)
 			throws TypeScriptException {
-		List<IFile> tsFilesToClosed = new ArrayList<>();
 		try {
 			List<String> tsFilesToCompile = new ArrayList<>();
 			// Collect ts files to compile by using tsserver to retrieve
 			// dependencies files.
 			// It works only if tsconfig.json declares "compileOnSave: true".
-			if (collectTsFilesToCompile(updatedTsFiles, getClient(), tsFilesToCompile, tsFilesToClosed, false,
+			if (collectTsFilesToCompile(updatedTsFiles, getClient(), tsFilesToCompile, false,
 					monitor)) {
 				return;
 			}
@@ -411,10 +410,6 @@ public void compileWithTsserver(List<IFile> updatedTsFiles, List<IFile> removedT
 			throw e;
 		} catch (Exception e) {
 			throw new TypeScriptException(e);
-		} finally {
-			for (IFile tsFile : tsFilesToClosed) {
-				closeFile(tsFile);
-			}
 		}
 	}
 
@@ -429,22 +424,14 @@ public void compileWithTsserver(List<IFile> updatedTsFiles, List<IFile> removedT
 	 * @throws Exception
 	 */
 	private boolean collectTsFilesToCompile(List<IFile> tsFiles, ITypeScriptServiceClient client,
-			List<String> tsFilesToCompile, List<IFile> tsFilesToClosed, boolean exclude, IProgressMonitor monitor)
+			List<String> tsFilesToCompile, boolean exclude, IProgressMonitor monitor)
 			throws Exception {
 		for (IFile tsFile : tsFiles) {
 			if (monitor.isCanceled()) {
 				return true;
 			}
 			String filename = WorkbenchResourceUtil.getFileName(tsFile);
 			if (!tsFilesToCompile.contains(filename)) {
-				// tsserver needs that file must be opened, force the "open"
-				// if file is not opened.
-				// see
-				// https://github.com/angelozerr/typescript.java/issues/142
-				if (getOpenedFile(tsFile) == null) {
-					openFile(tsFile, null);
-					tsFilesToClosed.add(tsFile);
-				}
 				collectTsFilesToCompile(filename, client, tsFilesToCompile, exclude);
 			}
 		}