setPrompt() and question() accept the value which is not string too (e.g. number, Date, Object, etc.).

README.md

@@ -14,7 +14,7 @@ console.log('Oh, so your favorite food is ' + answer);
 ## Installation
 
 ```
-npm install -g readline-sync
+npm install readline-sync
 ```
 
 ## Usage
@@ -100,6 +100,7 @@ try {
 + If `options.noEchoBack` is used, the text that input by user is saved to temporary file (e.g. `/tmp/readline-sync.stdout`). This file is removed immediately after reading is done, but you have to be careful about it because this text is *plain*. Removing the file might fail, or the file might be peeped before it is removed.
 
 ## Release History
+ * 2014-07-12			v0.4.1			`setPrompt()` and `question()` accept the value which is not string too (e.g. number, Date, Object, etc.).
  * 2014-07-12			v0.4.0			Add `options.noEchoBack`.
  * 2014-07-12			v0.3.0			Add `setPrint()`.
  * 2014-06-27			v0.2.3			Add alternative reading via shell on the environment which don't support interactively reading.

lib/readline-sync.js

@@ -20,16 +20,16 @@ var promptText = '> ',
 function _readlineSync(display, options) {
   var input = '', rsize, err;
 
-  if (display) {
+  if (display !== '') {
     if (typeof print === 'function') { print(display, encoding); }
-    stdout.write(display, encoding);
+    stdout.write(display + '', encoding);
   }
 
   if (options && options.noEchoBack) { // Try reading via shell
 
     input = _readlineShell(true);
     if (typeof input !== 'string') {
-      if (display) { stdout.write('\n', encoding); } // Return from prompt line.
+      if (display !== '') { stdout.write('\n', encoding); } // Return from prompt line.
       throw new Error('Can\'t read via shell');
     }
 
@@ -57,7 +57,7 @@ function _readlineSync(display, options) {
           err.errno = e.errno;
           err.code = e.code;
         }
-        if (display) { stdout.write('\n', encoding); } // Return from prompt line.
+        if (display !== '') { stdout.write('\n', encoding); } // Return from prompt line.
         throw err || e;
       }
 
@@ -136,9 +136,9 @@ exports.useShellSet = function(use) { useShell = use; };
 exports.setPrint = function(fnc) { print = fnc; };
 
 exports.setPrompt = function(newPrompt) {
-  if (typeof newPrompt === 'string') {
-    promptText = newPrompt;
-  }
+/* jshint eqnull:true */
+  promptText = newPrompt != null ? newPrompt : '';
+/* jshint eqnull:false */
 };
 
 exports.setEncoding = function(newEncoding) {
@@ -152,5 +152,9 @@ exports.prompt = function(options) {
 };
 
 exports.question = function(query, options) {
-  return _readlineSync(typeof query === 'string' ? query : '', options);
+  return _readlineSync(
+/* jshint eqnull:true */
+    query != null ? query : '',
+/* jshint eqnull:false */
+    options);
 };

package.json

@@ -1,7 +1,7 @@
 {
   "name": "readline-sync",
   "description": "Synchronous Readline",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "homepage": "https://github.com/anseki/readline-sync",
   "author": {
     "name": "anseki"