Because I was having problems with some modules I decided to format my micro SD card and start all over again with my test enviroment on the Pi 3A+ (My working mirror runs on my Pi 3B+ :winking_face: )

However I just run the installation of the MM2 command bash -c "$(curl -sL https://raw.githubusercontent.com/MichMich/MagicMirror/master/installers/raspberry.sh)" but when it got to “Installing dependencies” it run into an error:
bash: line 112: npm: command does not exist. Unable to install dependencies!
(well it’s translated from Dutch. Could also be “Command not found”)

anybody got an idea what is going on?

Netherlands - Arnhem - n1296
Netherlands - Amsterdam - n16

@sdetweil
I think I’ll just start over again with a reimage of the sd card.:persevering_face:
I’ve checked the package.json file in the electron folder and it showed version 2.0.16
So I entered that number at the bottom of the package.json file in the MMM-Swipe folder and run npm install again in the Swipe folder. Yet it gave me:

pi@Mirror:~/MagicMirror/modules/MMM-Swipe $ npm install
npm ERR! code ETARGET
npm ERR! notarget No matching version found for electron-rebuild@^2.0.16
npm ERR! notarget In most cases you or one of your dependencies are requesting
npm ERR! notarget a package version that doesn't exist.
npm ERR! notarget 
npm ERR! notarget It was specified as a dependency of 'MMM-Swipe'
npm ERR! notarget 

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/pi/.npm/_logs/2019-01-15T22_09_44_953Z-debug.log
pi@Mirror:~/MagicMirror/modules/MMM-Swipe $ 

Thanks for helping me out so far.
How do you know al this stuff? How long are you already doing this?
Hope I’ll get that smart one day. :grinning_face:

@sdetweil
Or can I better start clean and remove npm completely sudo npm uninstall npm -g and then reinstall?
I mean repearing all this could take longer than just simply uninstall and reinstall npm, MM2 and the few modules I have on this sd card. I just need the config.js file the store on a usb drive for when I’m done.

Or you think repearing that electron issue is a quick fix?:smiling_face_with_open_mouth_cold_sweat: :smiling_face_with_open_mouth_cold_sweat:

@sdetweil
Did it tonight. couldn’t make it yesterday.
So…did as we sad like above…yet it didn’t work.
This time something with electron. Here’s the terminal “output”:

pi@Mirror:~/MagicMirror/modules/MMM-Swipe $ npm install
npm WARN deprecated math-statistics@1.2.0: THIS PROJECT IS NO LONGER MAINTAINED by clebert
npm WARN deprecated expressive-assertion@1.5.1: THIS PROJECT IS NO LONGER MAINTAINED by clebert
npm WARN deprecated typesystem@5.0.0: THIS PROJECT IS NO LONGER MAINTAINED by clebert

> mmm-gpio@3.0.2 install /home/pi/MagicMirror/modules/MMM-Swipe/node_modules/mmm-gpio
> node-gyp configure build

make: Map '/home/pi/MagicMirror/modules/MMM-Swipe/node_modules/mmm-gpio/build' wordt binnengegaan
  CXX(target) Release/obj.target/gpio/src/gpio.o
  CXX(target) Release/obj.target/gpio/src/node_gpio.o
  SOLINK_MODULE(target) Release/obj.target/gpio.node
  COPY Release/gpio.node
make: Map '/home/pi/MagicMirror/modules/MMM-Swipe/node_modules/mmm-gpio/build' wordt verlaten

> mmm-usonic@2.5.3 install /home/pi/MagicMirror/modules/MMM-Swipe/node_modules/mmm-usonic
> node-gyp configure build

make: Map '/home/pi/MagicMirror/modules/MMM-Swipe/node_modules/mmm-usonic/build' wordt binnengegaan
  CXX(target) Release/obj.target/usonic/src/clock.o
  CXX(target) Release/obj.target/usonic/../mmm-gpio/src/gpio.o
  CXX(target) Release/obj.target/usonic/src/node_usonic.o
  SOLINK_MODULE(target) Release/obj.target/usonic.node
  COPY Release/usonic.node
make: Map '/home/pi/MagicMirror/modules/MMM-Swipe/node_modules/mmm-usonic/build' wordt verlaten

> MMM-Swipe@1.1.1 postinstall /home/pi/MagicMirror/modules/MMM-Swipe
> electron-rebuild -e ../../node_modules/electron-prebuilt


An unhandled error occurred inside electron-rebuild
Unable to find electron-prebuilt's version number, either install it or specify an explicit version

Error: Unable to find electron-prebuilt's version number, either install it or specify an explicit version
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-Swipe/node_modules/electron-rebuild/lib/src/cli.js:80:19)
    at Generator.next (<anonymous>)
    at /home/pi/MagicMirror/modules/MMM-Swipe/node_modules/electron-rebuild/lib/src/cli.js:8:71
    at new Promise (<anonymous>)
    at __awaiter (/home/pi/MagicMirror/modules/MMM-Swipe/node_modules/electron-rebuild/lib/src/cli.js:4:12)
    at /home/pi/MagicMirror/modules/MMM-Swipe/node_modules/electron-rebuild/lib/src/cli.js:69:8
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-Swipe/node_modules/electron-rebuild/lib/src/cli.js:145:4)
    at Module._compile (internal/modules/cjs/loader.js:654:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:665:10)
    at Module.load (internal/modules/cjs/loader.js:566:32)
npm ERR! code ELIFECYCLE
npm ERR! errno 255
npm ERR! MMM-Swipe@1.1.1 postinstall: `electron-rebuild -e ../../node_modules/electron-prebuilt`
npm ERR! Exit status 255
npm ERR! 
npm ERR! Failed at the MMM-Swipe@1.1.1 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/pi/.npm/_logs/2019-01-15T19_01_22_044Z-debug.log
pi@Mirror:~/MagicMirror/modules/MMM-Swipe $

Can’t I just remove the MMM-Swipe module and reinstall it?

@sdetweil If I understand you right:
#1 remove node_modules in “Home/Pi” and in “Home/Pi/MagicMirror” with command “rm -rf node_modules”
#2 re-install npm in the folder “Home/Pi/MagicMirror” and in “Home/Pi/MagicMirror/MMM-Swipe”
#3 then re-install the module mmm-usonic in the folder “Home/Pi/MagicMirror/MMM-Swipe”
#4 then rebuild the usonic module with “npm rebuild mmm-usonic”

I have doubt on where to install step 3. Should it go in the folder from the MagicMirror or from de module MMM-Swipe? Because I delete the module mmm-usonic with step 1. And I don’t know if this will be installed on re-installing the module MMM-Swipe.

But I’ll check that first thing tonight (if there is a module mmm-usonic being installed with MMM-Swipe). I think it should be installed with it as a dependency from MMM-Swipe.

@sdetweil
Oh…crap! :flushed_face: I have a node_modules folder under Home/Pi
not under Home/Pi/MagicMirror.
Think I’ll format my micro SD card and start over. This time when I install something for the MM I’ll do it from the directory Home/Pi/MagicMirror.
Don’t think I can just “move” the content of the Home/Pi/node_modules to the MagicMirror folder can I? :weary_face:

@sdetweil may I ask you were you think that mmm-usonic module should be install in order for it to work with the mmm-swipe module?
Reading what your telling me I’m starting to think it should be installed in the MMM-Swipe folder. However the error notification shows that it found the mmm-usonic module only it’s compiled with a wrong version.

I’ll try you suggestion “npm rebuild MMM-usonic” tonight and from the folder “/Home/Pi/” and see what happens (If I understand you correctly I can also use just “npm rebuild” when I’m in the folder “/Home/Pi/node_modules/mmm-usonic/”).

And I think I’ll start reading this after I’ve done that: https://docs.npmjs.com/ :grinning_face_with_smiling_eyes:
Hope I’ll know more about npm afterwards.

@sdetweil And do I have to be in a specific folder for this command (in the npm home folder or the mmm-usonic for instance)?
Or can I just type it in the terminal from the start (/Home/Pi/)?
That is what I still don’t quite get. What command must be used in what (folder) location.
But I’ll try that command tonight at home.
(I have my 3B+ with me here at work (that has the “working” MM2 on it. At home I have the Pi 3A+ attached to the 7" touchscreen and has the “test enviroment” of my MM2 on it. So when something works on the 3A+ (and I know how to do it right) I can do it first time right on the 3B+.:smiling_face_with_open_mouth_smiling_eyes: )

@sdetweil is npm then the compiler?
If so how can I recompile the mmm-usonic module so it works with my current Node.js version?
Is there somewere documentation on how this npm works and how all the modules are tide in it?