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* [BUG] ob-js "SyntaxError: Unexpected end of input" when code block ends with comment
@ 2023-04-16 11:46 sgherdao--- via General discussions about Org-mode.
  2023-04-17 11:13 ` Ihor Radchenko
  0 siblings, 1 reply; 3+ messages in thread
From: sgherdao--- via General discussions about Org-mode. @ 2023-04-16 11:46 UTC (permalink / raw)
  To: Emacs Orgmode

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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


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^ permalink raw reply	[flat|nested] 3+ messages in thread
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-- links below jump to the message on this page --
2023-04-16 11:46 [BUG] ob-js "SyntaxError: Unexpected end of input" when code block ends with comment sgherdao--- via General discussions about Org-mode.
2023-04-17 11:13 ` Ihor Radchenko
2023-04-17 22:30   ` sgherdao--- via General discussions about Org-mode.

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