Add synchronous operation support to node-tmp definitions

tmp/tmp-tests.ts

@@ -44,3 +44,25 @@ tmp.tmpName({ template: '/tmp/tmp-XXXXXX' }, (err, path) => {
 });
 
 tmp.setGracefulCleanup();
+
+var tmpobj = tmp.fileSync();
+console.log("File: ", tmpobj.name);
+console.log("Filedescriptor: ", tmpobj.fd);
+tmpobj.removeCallback();
+
+tmpobj = tmp.dirSync();
+console.log("Dir: ", tmpobj.name);
+tmpobj.removeCallback();
+
+var name = tmp.tmpNameSync();
+console.log("Created temporary filename: ", name);
+
+tmpobj = tmp.fileSync({ mode: 644, prefix: 'prefix-', postfix: '.txt' });
+console.log("File: ", tmpobj.name);
+console.log("Filedescriptor: ", tmpobj.fd);
+
+tmpobj = tmp.dirSync({ mode: 750, prefix: 'myTmpDir_' });
+console.log("Dir: ", tmpobj.name);
+
+var tmpname  = tmp.tmpNameSync({ template: '/tmp/tmp-XXXXXX' });
+console.log("Created temporary filename: ", tmpname );