When write some code with ES6 features, the nodejs-repl can't work well.

> class Album{
SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
    at Object.exports.createScript (vm.js:24:10)
    at REPLServer.defaultEval (repl.js:137:25)
    at bound (domain.js:280:14)
    at REPLServer.runBound [as eval] (domain.js:293:12)
    at REPLServer.<anonymous> (repl.js:393:12)
    at emitOne (events.js:77:13)
    at REPLServer.emit (events.js:169:7)
    at REPLServer.Interface._onLine (readline.js:210:10)
    at REPLServer.Interface._line (readline.js:549:8)
    at REPLServer.Interface._ttyWrite (readline.js:833:16)
> >   constructor(currentSales){

Emacs:
version: 26.2

Nodejs-repl
Version: 20200114.1529
Commit: 8b90948

NodeJS:
Version: 13.8.0

Steps to reproduce:

1. Start nodejs-repl
2. Type `console.log("Hello world") into the repl
3. Mark the undefined that the repl returns and copy it to the kill ring (M-w)
4. Open a file tmp.js and enter console.log("Hello World") mark it, and then call nodejs-repl-send-region

The kill ring contents are prepended to what is sent to the nodejs-repl:

> console.log("Hello World")
Hello World
undefined
> undefined.editor
// Entering editor mode (^D to finish, ^C to cancel)
console.log("Hello World");
undefined
Hello World
undefined
> 

Process nodejs finished

First of all thanks for this tool!

I am having a hard time figuring out how to use nodejs-repl-send-last-sexp, for example if I run it on the following:

[1,2,3].map(function(number) {
  return number * 2
})
// <-- from here

then this is evaluated

function(number) {
  return number * 2
}

while I would've liked the whole thing. Is there any way to have this? One could use nodejs-repl-send-region, as a fallback, is that intended?

I've had a look at the source code and the function responsible to figure out the extension of the sexp seems to be backward-sexp.

First of all thank you for creating this package!

I've modified the nodejs-repl-execute function a bit to echo the results of the selected region in the minibuffer. This way a js file can be used as a scratch buffer:

Do you think this could be a useful addition to the package? Then I'll submit a PR for this.

I've had nodejs-repl-send-region fail when the region included a lambda definition. This won't run, but it might give you an idea:

supertest(options.shoreApi)
    .post('/Test/Enpoint')
    .set('Content-type', 'application/json')
    .send(testUser)
    .expect(status.OK)
    .end((err, res) => {
        if (err) {
            console.error(err);
        }
        console.log(res.body);
});

This would fail with the error message:

>     .post('/Test/Enpoint')
Invalid REPL keyword
>     .set('Content-type', 'application/json')
Invalid REPL keyword
>     .send(testUser)
Invalid REPL keyword
>     .expect(status.OK)
Invalid REPL keyword
>     .end((err, res) => {
Invalid REPL keyword
>         if (err) {
.....             console.error(err);
.....         }
ReferenceError: err is not defined
>         console.log(res.body);
ReferenceError: res is not defined
> });
});
^

SyntaxError: Unexpected token }

> 

Since NodeJS 6.4.0, it is possible to work around this by wrapping the multi-line string in a
".editor" multi-line-string Control-D (EOF) block.

I will send a PR that implement this.

Hello! Thanks for this nice package first of all 😄

I know this is not really supported but it would be great to have typescript Repl. I am still considering if it is worth modifying this or having a completely new inf-typescript for instance. I think the sexp detection part can be difficult to achieve for typescript, and should be probably delegated to typescript.el.

Anyways, I am trying it out and I get:

⨯ Unable to compile TypeScript
[eval].ts (1,16): Property 'columns' does not exist on type 'WritableStream'. (2339)

Process nodejs exited abnormally with code 1

Checking the code a bit, it seems that the new process.stdout (I am using node 7.9.0) does not have columns anymore.
In general probably that block causes the problem and it is not required anymore form new repls. I might be wrong of course.

Would you be interestend in a defcustom that avoids passing the -e to the process?

In general I'd be interested in your opinion on an alternative Emacs mode/package.

Installing package and updating .emacs file gives this error on reload / load:

Node installed and working fine outside emacs. Have tried almost every possible solution to ger nodejs repl working on emacs, all throw errors after adding the require and logic in .emacs file.

Running on MacBookPro with Mavericks

var foo = 123; _

No proper expression is found backward

Could not find a way to send stuff to nodejs-repl.
repl-toggle-mode seems to do the trick nicely

M-x nodejs-repl. then enter an input:

> x = 1
1
>

Press M-p (bound to comint-previous-input) causes the buffer to look like this:

> x = 1
1
x = 1> 

It's then impossible (as far as I can see) to input more text. Pressing RET repeatedly gives this:

> x = 1
1
x = 1> x = 1> 
... 
... 
... 

After updating to the latest nodejs-repl and emacs 26.2 tab completion in repl buffers hangs emacs.

Steps to reproduce are pretty straight forward.
Install emacs 26.2
Install latest nodejs-repl
M-x nodejs-repl
Type process. and hit tab, emacs freezes. ctr-g to unfreeze

Thanks!

Currently, I see a message in the repl saying:

.editor
// Entering editor mode (^D to finish, ^C to cancel)
console.log(1+4);
5
undefined
.>.

Q1. How do I get rid of the text "Entering editor mode..."?
Q2. Also, how do I change the prompt to just "> " instead of ".>."

Emacs version: 27.1
nodejs-repl version: 0.2.4
Node version: 14.10.1

Steps to reproduce:
1. Open any .js file
2. Execute M-x nodejs-repl
3. digit any expression on the repl (e.g. 5 + 8)

I installed this mode and when i execute any expression in the REPL buffer i get the following errors:

error in process filter: run-hook-with-args: End of buffer
error in process filter: End of buffer

and the RELP hang up a little bit, i don't now much about elisp so i was wondering if someone could help me with this?

This is the config i use, nothing especial:

(use-package nodejs-repl
  :config
  (add-hook 'js-mode-hook
          (lambda ()
            (define-key js-mode-map (kbd "C-x C-e") 'nodejs-repl-send-last-expression)
            (define-key js-mode-map (kbd "C-c C-j") 'nodejs-repl-send-line)
            (define-key js-mode-map (kbd "C-c C-r") 'nodejs-repl-send-region)
            (define-key js-mode-map (kbd "C-c C-c") 'nodejs-repl-send-buffer)
            (define-key js-mode-map (kbd "C-c C-l") 'nodejs-repl-load-file)
            (define-key js-mode-map (kbd "C-c C-z") 'nodejs-repl-switch-to-repl))))

Ifhtere's no nvm-which present, then the nvm-which funciton in the docs fails. I was able to fix it with:

  (defun nvm-which ()
    (let ((output (shell-command-to-string "source ~/.nvm/nvm.sh; nvm which")))
      (if (cl-search "Node Version" output)
          (setq output (shell-command-to-string "source ~/.nvm/nvm.sh; nvm which current"))
      (setq output (cadr (split-string output "[\n]+" t))))
    (message output)
    output))

When I execute M-x nodejs-repl, I get the message : Debugger entered--Lisp error: (file-missing "Searching for program" "No such file or directory" "env").
What is env? My OS is Windows 10, and I can't find that in my Computer

http://marmalade-repo.org

You have to make it a package first, this might help: http://emacswiki.org/emacs/ELPA

Emacs 26.3
nodejs-repl v0.2.2
Nodejs version v13.5.0

To reproduce, type: "Obj" and press TAB, which causes emacs to hang.
Pressing Ctrl-g unfreezes emacs.

Also, another interesting thing occurs when pressing Enter after this, the incorrect string gets sent to the repl.

> Obj
Uncaught ReferenceError: ObjectObj is not defined
    at repl:1
    at Script.runInContext (vm.js:131:20)
    at REPLServer.defaultEval (repl.js:425:29)
    at bound (domain.js:427:14)
    at REPLServer.runBound [as eval] (domain.js:440:12)
    at REPLServer.onLine (repl.js:750:10)
    at REPLServer.emit (events.js:305:20)

Might be related to #24 ?