niminem / neel Goto Github PK

Please, could you include google-chrome-stable to this line?

This is the name given i ArchLinux.

Every now and then I glance at this project . the concept seems very interesting , but I see that the project is at a standstill . Has the development been stopped ?

1. I've compiled the app on windows 10 using MinGW x64
2. After I copied and run the app on other device - it require libwinpthread-1.dll
3. I copied the lib from my workspace
4. Then the app started with 0xc000007b crash and exits

Suggestion : Use Axino widgets instead (or as an alternative to) of HTML + CSS:

• https://github.com/serge-hulne/axino
• https://medium.com/an-idea/axino-tutorial-todo-list-f1895e53be94
• https://medium.com/swlh/getting-started-with-axino-4584bcdb99ca

Aim:

• Use only Nim (backend) and Typescript (front end) : No html/CSS/JS mixture.
• Make the entire application in a procedural way (Axino libs are procedural, not declarative, unlike HTML)

So, I need threadpool for my current project.
So, I need to access callJs from spawned procedure.
So, it fails miserably.

Is it ever possible to use that library with multithreading ?

The code in neel.js (see neel.nim, line 254) for responding to a callJs request will swallow any exception caused by the function being called and make it look like the problem is a JSON parse error. Offending code section:

254 ws.onmessage = (data) => {
255     try {
256         let x = JSON.parse(data.data)
257         let v = Object.values(x)
258         neel.callJs(v[0], v[1])
259     } catch (err) {
260         let x = JSON.parse(data)
261         let v = Object.values(x)
262         neel.callJs(v[0], v[1])
263     }
264 }

If line 256 succeeds and the function called in line 258 then throws an exception, then the catch block attempts to re-parse the whole message as JSON, which fails with Uncaught SyntaxError: JSON.parse: unexpected character at line 1 column 2 of the JSON data and the original exception which was thrown in the try block is lost.

I think this would do the trick:

254 ws.onmessage = (data) => {
255    let x;
256     try {
257         x = JSON.parse(data.data)
258     } catch (err) {
259         x = JSON.parse(data)
260     }
261         let v = Object.values(x)
262         neel.callJs(v[0], v[1])
263 }

Hi,

Is it possible for Neel be used for a web application?
I would like to make a single executable web application I've seen done in the Go programming language,
and was wondering if Neel could be a candidate for these kinds of applications in Nim.

Thanks
Matic

INFO Jester is making jokes at http://127.0.0.1:5000 (all interfaces)
DEBUG GET /
DEBUG   200 OK {"cache-control": @["no-store"]}
DEBUG GET /main.css
DEBUG   200 OK {"cache-control": @["no-store"]}
DEBUG GET /three.module.js
DEBUG   200 OK {"cache-control": @["no-store"]}
DEBUG GET /GLTFLoader.js
DEBUG   200 OK {"cache-control": @["no-store"]}
DEBUG GET /RoomEnvironment.js
DEBUG   200 OK {"cache-control": @["no-store"]}
DEBUG GET /lil-gui.module.min.js
DEBUG   200 OK {"cache-control": @["no-store"]}

JS:

		import * as THREE from './three.module.js';
		import { GLTFLoader } from './GLTFLoader.js';
		import { RoomEnvironment } from './RoomEnvironment.js';
		import { GUI } from './lil-gui.module.min';

Chrome:


GLTFLoader.js:1
Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.
RoomEnvironment.js:1
Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.
lil-gui.module.min.js:1
Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.
three.module.js:1
Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.

As far as I understand, I need to set the MIME type on the server, how can I do this? I use three.js .

Hi, thx for the nice lib.
I am using version 0.4.0 + nim 1.4.8 and noticed that example app (also my app) can crash when the page is reloaded frequently.
Either this can be checked in the browser by spamming the F5 button.

Hello, when trying to run a basic example I receive the following error: Error: undeclared identifier: 'callProc'

I get this error:

Downloading https://github.com/Niminem/Neel using git
  Verifying dependencies for [email protected]
      Info: Dependency on jester@>= 0.5.0 already satisfied
  Verifying dependencies for [email protected]
      Info: Dependency on httpbeast@>= 0.2.2 already satisfied
  Verifying dependencies for [email protected]
      Info: Dependency on asynctools@#0e6bdc3ed5bae8c7cc9 already satisfied
  Verifying dependencies for asynctools@#0e6bdc3ed5bae8c7cc9
      Info: Dependency on https://github.com/timotheecour/asynctools@#pr_fix_compilation already satisfied
  Verifying dependencies for asynctools@#pr_fix_compilation
      Info: Dependency on ws@>= 0.4.2 already satisfied
  Verifying dependencies for [email protected]
 Installing [email protected]
   Building neel/neel using c backend
�[1m/tmp/nimble_1130/githubcom_NiminemNeel/src/neel.nim(16, 37) �[0m�[31mError: �[0mcannot open file: /tmp/nimble_1130/githubcom_NiminemNeel/src/assets/index.html�[36m�[0m
    Prompt: Build failed for '[email protected]', would you like to try installing 'neel@#head' (latest unstable)? [y/N]

Nimble is apparently running your module when installing, please fix this.
UPDATE:
Got this error on linux and windows

Hi!

First of all, thank you so much for this amazing project! It has clearly encouraged me to start using Nim to create simple and shareable apps (still a beginner). Combining Nim's performance with a nice frontend in HTML/CSS/JS is a fantastic idea.

I have successfully created my first app on Linux, which works well. I am still figuring out how to bind C header files and shared libraries to the executable, but that's another subject. Now, I wanted to inquire if there is support for cross-compilation from Linux to Windows using Nim. According to the Nim Compiler User Guide, I tried to compile my app into a Windows executable using the following command:

nim c -d:mingw --threads:on --mm:orc --app:gui -d:release main.nim

This command successfully creates a main.exe binary. However, when I try to run it on Windows, I encounter a black screen with the following error message (translated from French):

"This page does not work
Impossible to process this request via localhost at this time.
HTTP ERROR 500"

I have also attempted to compile the "filepicker" example, which works perfectly when compiled for Linux but encounters the same problem when compiled for Windows. Am I doing something wrong, or is cross-compilation not supported (yet)?

Thanks in advance

If an exposeProc uses try/except and then calls callJs from within the except block, the app crashes with a segfault.

Try this:

exposeProcs:
  proc tryExcept() =
    try:
      raise newException(CatchableError, "Oh no!")
    except:
      callJs("reportException", "except")

I'm not sure this is an issue with Neel so much as with Nim itself, but I figured it'd be better to point it out. What's going on here and how does one handle this?

I just started checking out these projects, but I'm thinking they might make a killer Nim project if put together. I'm thinking GraBulma and Nim would be good for building CrossBrowdy modules, and then using Neel to ship the clients? I'm going to check with the other developers to see what they think, but I thought I'd start here.
I'm having a problem which I'll file a separate issue for, but I'm not getting any pages to show up in Neel. I'm also not seeing any errors.
I know it's still early in the development cycle, but I'd thought I'd just check. It might be because I'm using a Mac.
https://crossbrowdy.com
https://github.com/juancarlospaco/grabulma

Hi @Niminem , thanks for the work, it was quite easy to get started with neel.

I have a problem though. The communication from backend to frontend seems to be very slow (or something that should not be blocking is blocking)

I have created tried to create a simple paint on canvas app, that catches the mouse move event on the frontend, sends the coordinates to backend, which prints them out and tells front end to paint them on the canvas. (Obviously redundant, just for the sake of the example.)

The coordinates are printed out immediately, when I comment out the call to frontend, with the call in place, large delays occur (multiple seconds). To make sure it is not the function itself, I have replaced it with an empty function on the front end side, and it had the same effect.

Environment
Nim 1.4.2 / Windows 10 ver. 2004 / Neel 0.2.7

Problem
My home and work PCs have two drives (C: is an SSD, D: is an HDD). If I run a Nim application that uses Neel on the drive that has Chrome installed, it runs. If I try it from the other drive, it fails.

i.e. from C:\temp\blah.exe - the executable runs (since Chrome is installed on the C: drive)
from D:\temp\blah.exe - I get the following error in a dialog box:

neel.nim(182) findChromeWindows
Error: unhandled exception: could not find Chrome in Program Files (x86) directory [CustomError]

I suspect the logic for detecting Chrome's install location in Neel needs to be beefed up.

Possible solution:
It may be possible to check the Windows registry to find the Chrome install location if the current logic can't find the exe. A quick check of Stack Overflow suggested the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\chrome.exe

I don't know if this registry key is always there/is the 'official' one but it exists on my Windows 10 install and points to the Chrome install folder.

Also, thanks for creating Neel! I've tried other Nim webview components and yours was the first that let me complete a small utility I needed.

Hi. Great project. Is there any chance you could use webview instead of or in addition to Chrome?

https://github.com/oskca/webview

Thanks.

Hi,

Trying to compile the filePicker.nim give the following error:

C:\Users\someuser\.nimble\pkgs\neel-0.2.7\neel.nim(6, 20) Warning: inherit from a more precise exception type like ValueError, IOError or OSError. If these don't suit, inherit from
 CatchableError or Defect. [InheritFromException]
C:\Users\someuser\.nimble\pkgs\jester-0.5.0\jester.nim(1298, 9) Hint: Asynchronous route: theRouter. [User]
C:\Users\someuser\Desktop\Neel-master\examples\filePicker.nim(21, 9) template/generic instantiation of `startApp` from here
C:\Users\someuser\.nimble\pkgs\neel-0.2.7\neel.nim(241, 16) template/generic instantiation of `router` from here
C:\Users\someuser\.nimble\pkgs\jester-0.5.0\jester.nim(1304, 35) template/generic instantiation of `async` from here
C:\Users\someuser\.nimble\pkgs\neel-0.2.7\neel.nim(292, 88) Error: type mismatch: got <string, proc (req: Request): string{.noSideEffect, gcsafe, locks: 0.}>
but expected one of:
proc `/`(head, tail: string): string
  first type mismatch at position: 2
  required type for tail: string
  but expression 'path' is of type: proc (req: Request): string{.noSideEffect, gcsafe, locks: 0.}
3 other mismatching symbols have been suppressed; compile with --showAllMismatches:on to see them

expression: getCurrentDir() / "web" / path

Any ideas on how to solve this?
Specs:

• Windows 10
• Nim Devel

i have this macro based code that allows you to automatically generate types for procedures, as well as generating calling lambdas for these procedures that simply accept a string and then convert it via json to a function argument object. i wrote this myself in 2 days, and i can share it with you if you need it. i wrote it for my webview2 bindings.

Hi great project you have here I am new to github in general and I want to help contribute to this project. Do you have any new features that needs implementation if so I would love to help implement them.