[BUG] ob-js "SyntaxError: Unexpected end of input" when code block ends with comment

[sgherdao--- via "General discussions about Org-mode." <emacs-orgmode@gnu.org>]

[-- Attachment #1: Type: text/plain, Size: 2105 bytes --]

Hello,

I would like to report a bug, I am using the following versions

GNU Emacs 28.2
Org mode version 9.6.1
Node v19.9.0


The following code snippet fails to execute

#+begin_src js
console.log("Hello Friends!");
// -> logs "Hello Friends"
#+end_src

I encounter the following error message:

#+begin_src text
/tmp/js-script-dn2Wrp:2
// -> logs "Hello Friends"}()));

SyntaxError: Unexpected end of input
    at internalCompileFunction (node:internal/vm:73:18)
    at wrapSafe (node:internal/modules/cjs/loader:1195:20)
    at Module._compile (node:internal/modules/cjs/loader:1239:27)
    at Module._extensions..js (node:internal/modules/cjs/loader:1329:10)
    at Module.load (node:internal/modules/cjs/loader:1133:32)
    at Module._load (node:internal/modules/cjs/loader:972:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:83:12)
    at node:internal/main/run_main_module:23:47
#+end_src


Upon further inspection, I found that the generated JavaScript code in the tmp file contains an unbalanced brace and parentheses, as shown below:


#+begin_src js
require('process').stdout.write(require('util').inspect(function(){console.log("Hello Friends!");
// -> logs "Hello Friends"}()));
#+end_src


Since the last line of the code snippet contains a comment the brace and parens are unbalanced
This seems to point to the way the following variable is defined in ob-js.el


#+begin_src emacs-lisp
(defvar org-babel-js-function-wrapper
  "require('process').stdout.write(require('util').inspect(function(){%s}()));"
  "Javascript code to print value of body.")
#+end_src

As a simple fix, I have added a \n after %s

#+begin_src emacs-lisp
(defvar org-babel-js-function-wrapper
  "require('process').stdout.write(require('util').inspect(function(){%s\n}()));"
  "Javascript code to print value of body.")
#+end_src


Please let me know if you need any additional information or if there's anything else I can do to help resolve this issue.


Best regards,
--
Salah


[-- Attachment #2: Type: text/html, Size: 4003 bytes --]