I'm new to Play framework. Please explain the meaning of the below warning.
Warning: node.js detection failed, sbt will use the Rhino based Trireme JavaScript engine instead to run JavaScript assets compilation, which in some cases may be orders of magnitude slower than using node.js
I don't want anything that slow down my application so please advice if I should change the JS Engine to Node.js, but my PlayFramework project is using Java on the server side.
You need to install Node.js and then tell the sbt/java engine to use it.
brew install node
Edit .bash_profile and add:
export SBT_OPTS="${SBT_OPTS} -Dsbt.jse.engineType=Node -Dsbt.jse.command=$(which node)"
This eliminated the warning for me on OSX
In Windows:
Install node.js
Go to Control Panel - System and Security - System - Advanced system settings
Click Environment Variables...
Search in System variables for SBT_OPTS
If such exists, click Edit... and concatenate -Dsbt.jse.engineType=Node to Variable value
If such does NOT exist, click New... and write SBT_OPTS to Variable name and -Dsbt.jse.engineType=Node to Variable value
Click OK - OK - OK
Restart any command prompt (cmd, PowerShell) that is currently running Play Framework
in ubuntu
curl -sL https://deb.nodesource.com/setup | sudo bash -
sudo apt-get install -y nodejs
then add as above to your .profile in your home directory
export SBT_OPTS="${SBT_OPTS} -Dsbt.jse.engineType=Node -Dsbt.jse.command=$(which node)"
then
. ./.profile
to reload your .profile
For a more flexible install using node version manager check the following tutorial:
how to install node js on an ubuntu 14.04 server
Build again and the warning about using the Trireme stuff should be gone.
As an alternative to setting the environment variable, you can add this line to your build.sbt file:
JsEngineKeys.engineType := JsEngineKeys.EngineType.Node
See: https://github.com/sbt/sbt-js-engine
sbt plugins requiring a JS engine are used only in the build process, and so missing Node.js only slows down assets building stages if you use any.
The built application is not affected.
Anyway, you may want to install node.js to your PATH, where it should be auto-detected.
in Windows 10:
Install node.js from https://nodejs.org/en/
(The installer automatically adds node.js to your PATH)
then add:
export SBT_OPTS="$SBT_OPTS -Dsbt.jse.engineType=Node"
to your plugins.sbt in
. ./project/plugins.sbt
Worked for me - the warning has disappeared!
EDIT:
Apparently plugins.sbt was the wrong place to add the
export SBT_OPTS="$SBT_OPTS -Dsbt.jse.engineType=Node"
...although the warning disappeared when loading my app, it led to an error when relaunching the app a couple of hours later:
error: not found: value export
I would be glad if anyone could help and tell me where to put the export.
Related
I am failing to start npm serve at Run/Debug Configuration in IntelliJ.
But doing it separately in Terminal within IntelliJ or on plain console works.
What's going on? How to solve that?
Here's what the Run console shows:
/usr/local/bin/node /usr/local/lib/node_modules/npm/bin/npm-cli.js run serve --scripts-prepend-node-path=auto
> pwdstorage#0.1.0 serve
> node_modules/.bin/vue-cli-service serve
env: node: No such file or directory
Process finished with exit code 127
As mentioned before running the command
/usr/local/bin/node /usr/local/lib/node_modules/npm/bin/npm-cli.js run serve --scripts-prepend-node-path=auto
on a terminal will properly work; even in IntelliJ.
At IntelliJ/Preferences.../Languages & Frameworks/Node.js and NPM the Node interpreter is set to /usr/local/bin/node and the Package manager is set to /usr/local/lib/node_modules/npm They both do exist.
What the frag is going on?
I would love to get a deeper understanding of the whole thing and do appreciate any inseide views on this.
The issue is that node is not on your $PATH; on MacOSX the environment variables differ between GUI applications and within the terminal. Terminal environment is only available to applications started from terminal.
To solve this problem, IDEA tries to load terminal environment by executing some scripts on startup, but it seems that it can't retrieve all needed stuff in your case - thus the issue. As a workaround, you can try starting IDEA from terminal.
Some links you may find useful: http://apple.stackexchange.com/questions/106355/setting-the-system-wide-path-environment-variable-in-mavericks, http://apple.stackexchange.com/questions/51677/how-to-set-path-for-finder-launched-applications.. The problem is that the way to define system-wide environment variables on Mac changes from one version to another (even minor system updates may break your environment)
As lena answered, it did help. Thank you for your help!
Starting it from the terminal does the job.
In my case I build a starter script
#! /bin/bash
/Applications/IntelliJ\ IDEA.app/Contents/MacOS/idea &
I am running the ultimate version of IntelliJ. The CE version does have another path to start!
The next two nice things to have would be
to have the opened terminal window automatically closed
link it with a proper icon placed on the desktop.
If anyone can help, go ahead!-)
Trying to run the command npm run build on my system but keep getting this
error. Tried uninstalling node but no luck. Any pointers would be helpful
The issue for me was that I am using nvm, and for reasons I don't yet know, when I try to set my node version to 12.14.0, and then run nvm list, no versions are selected. I went back to 13.8.0 and nvm list showed that 13.8.0 was selected.
Long story short, make sure you have a selected node version.
you should follow one of two option:
Option 1 – Setup by running the .msi installation file
Its a typical Windows installation and automated.
No need to add entries in environment varaiable
Option 2 – Setup by extracting .zip file
This method does not require admin access and can be used to install on nodejs on a system on which you dont have admin access such as you official laptop or desktop.
Removing nodejs is as simple as deleting the folder.
You will have to add entries in environment variable if you want to execute node command from any location in windows command prompt.
See the link below for more details : install Node.js and NPM on Windows 10
I have no admin rights in my windows machine. Can I install NVM without admin rights? I tried using the environment variable path setup, but its not working in my case.
I have the same need and couldn't find one, so I created one base on another simple nvm:
https://www.npmjs.com/package/#jchip/nvm
Requires powershell 4+ and permission to execute scripts.
(You're talking about https://github.com/coreybutler/nvm-windows right?)
Whether you can install it without admin rights aside, the actual act of switching node versions with it requires them so you're going to have trouble.
Your best bet is to install different versions of node into different paths manually, and then configure your environment variables to point to the right one whenever you need to use it.
eg. prefix your cmd script with PATH=C:\node\v10;%PATH% to have any node or npm calls in that script use whatever node is sitting in v10
try this
create a bat file like below
#cd C:\Users\testuser\AppData\Roaming\nvm
#SET PATH=C:\Users\testuser\AppData\Roaming\nvm\v14.21.1;%PATH%
cd c:\users\testuser\Desktop\Project
#cmd.exe /K
Run bat file and type
code .
It's open with VSCode
go to the terminal and type node and you can see the node version that you set in the bat file.
enter image description here
You can apply any node version as above bat file
If you use Git Bash on Windows, you can add this to your bash.bashrc to switch node versions:
export PATH=/c/path/to/node/dir:$PATH
Then just restart your terminal to pick up the updated PATH.
It will prepend your path with your desired node version. It's the only way I've found to override the installed node version if you don't have admin rights on your machine.
I try to use plowshare to download files with command line but on ubuntu I got this error: "Use of Javascript interpreter is disabled in debian for security."
I've found that I should add environmental variable: "PLOWSHARE_DEBIAN_JS=yes"
I added it to ".bashrc" in home directory, with source after that but it doesn't work, i can't find anything what can help, anyone know how can i enable JS?
Not sure if you found a resolve. But I fixed this issue by command export PLOWSHARE_DEBIAN_JS=yes then you might encounter another issue like "Javascript interpreter not found. Please install one" just install nodejs sudo apt-get install nodejs
In WebStorm to get karma.conf running I need to configure it in a pop up window and enter the "path to the node.js interpreter".
(for some reason this information vanished after a restart)
Questions:
What is the path to the needed file?
Where is the node interpreter on Mac/Linux/Windows by default?
(I am on OS X)
Generally, on OSX and Linux, you can find any program with which program. In your case, type
which node
in terminal.
On windows command prompt
where node
On OSX if you've installed Node.js with brew:
/usr/local/bin/node
You can check the exact folder on your machine with the command which node
Important
When the finder opens on OSX, you won't be able to navigate to this path initially. You'll first need to navigate to the root folder e.g. Macintosh HD and then perform the keyboard shortcut Command + Shift + . (. = dot = period) to be able to select hidden files and folders.
Ubuntu:
sudo apt install nodejs
whereis nodejs
nodejs: /usr/bin/nodejs /usr/lib/nodejs /usr/include/nodejs /usr/share/nodejs /usr/share/man/man1/nodejs.1.gz
Configuring NodeJS Intepreter in IntelliJ:
File | Settings | Languages & Frameworks | Node.js and NPM
Node interpreter: Add... (select from the above path or add it)
/usr/bin/nodejs
Then, click on Enable button and select the modules.
On OSX:
/usr/local/bin/node
well I got it by myself, but wanted to share the answer, as I couldn't find it on google / stack overflow and hope to save somebody some time
This can be useful for someone. I tried all the previous methods on Linux Ubuntu 19.10, none worked, neither reinstalling nodejs. So I installed Webstorm via snap, with:
sudo snap install webstorm
sudo snap install webstorm --classic
And surprise, Nodejs was already configured in this version. Then I erased the webstorm version that I installed from Ubuntu Softwared.
That worked for me and was easy. Hope that can give you a clue.