This is a simple tool for NodeJS to convert ISO-8859-9 and Windows-1254 encoded Strings and Buffers into UTF-8 strings.
npm install turkish-char-encoding
npm test
var encoder = require('turkish-char-encoding');
// for win-1254
var str = encoder('win-1254').toUTF8('ÖöÇ窺İıĞğÜü'); // your win-1254 text/buffer
// for iso-8859-9
var str = encoder('iso-8859-9').toUTF8('ÖöÇ窺İıĞğÜü'); // your iso-8859-9 text/buffer
etc...