Add JS Code to the Mirror

[stro]

I was able to solve that problem.
MPD port was double busy. Apparently 2 instances of Mopidy were running.

Now the module MMM-MPD runs under a few specials:

During the installation the folder name has to be changed according to the config file.
The config file value maxRows must not be 0!
The display will only update after a song change!

It was hard to find this specifics, but I thank everyone for the help!

[Leobo]

Thank You @stro, This work great. Im rename folder MMM-MPD to mod_client and move to MagicMirror module, From MagicMirror/module/mpd_client npm install and work.

[dnj0104]

@Leobo said in Add JS Code to the Mirror:

Thank You @stro, This work great. Im rename folder MMM-MPD to mod_client and move to MagicMirror module, From MagicMirror/module/mpd_client npm install and work.

Something like this happens to me, but my module is from user coderpussy @github , pretty new fork, maybe I got some failure from moodeaudio devs, but I dont think, so anyway here is some of my errors.

if change folder name mmm-mpd to mpd_client errors in MM startup:

alerts in MagicMirror startup:
WARNING! Could not validate config file. Starting with default configuration. Please correct syntax errors at or above this line: ReferenceError: NodeHelper is not defined
    at Object.<anonymous> (/home/pi/MagicMirror/modules/mpd_client/node_helper.js:4:18)
    at Module._compile (internal/modules/cjs/loader.js:786:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:798:10)
    at Module.load (internal/modules/cjs/loader.js:645:32)
    at Function.Module._load (internal/modules/cjs/loader.js:560:12)
    at Module.require (internal/modules/cjs/loader.js:685:19)
    at require (internal/modules/cjs/helpers.js:16:16)
    at loadModule (/home/pi/MagicMirror/js/app.js:134:17)
    at loadNextModule (/home/pi/MagicMirror/js/app.js:169:5)
    at /home/pi/MagicMirror/js/app.js:171:6

change folder name from mmm-mpd to mpd-client:
Result: No errors in MM-startup but mpd-module does not start.

**Looking for errors in MM-dev tools with folder named to mpd-module>** 

Errors:
Load script: modules/mpd_client//mpd_client.js
:8080/modules/mpd_cl…nt//mpd_client.js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
loader.js:186 Error on loading script: modules/mpd_client//mpd_client.js


module in mm-config array looks like 
this.

{
		module: "mpd_client",
		position: "top_right",	// This can be any of the regions.
		config: {
			  // See 'Configuration options' for more information.
			hostname:"mpd@moodeaudio@rpi3b+=IPnumber)",
			port:6600 
			
		}
        
     },    

[sdetweil]

@dnj0104 there is probably more to the error message this also happens when there is some library required by a module not found at startup

u can also run

npm run config:check 

to review any syntax errors in the config.js file

[dnj0104]

@sdetweil said in Add JS Code to the Mirror:

npm run config:check

in magicmirror/modules

or in magicmirror/modules/mpd-module ?

Thinks the whole module has to be rebuilt…

[sdetweil]

@dnj0104 in MagicMirror

[dnj0104]

@sdetweil

then I got

[2020-10-23 23:46:08.836] [INFO]   Checking file...  /home/pi/MagicMirror/config/config.js
[2020-10-23 23:46:09.049] [INFO]   Your configuration file doesn't contain syntax errors :)

[sdetweil]

@dnj0104 ok, so the error that causes the default config to load is caused by some other problem.

missing module, or some other failure

can u show the MM startup messages (from the window where you do npm start)

a module consists of the folder name

MMM-MPD

and its main js file

MMM-MPD.js

and inside MMM-MPD.js is the module register statement

Module.register("MMM-MPD", {

and in config.js

  {
     module: 'MMM-MPD',

this causes MM to look for the folder, filename and file contents in that order

SO, it SOUNDS like from a prior post, that the REAL name is

mod_client

(so there must be the right folder name, file name and file contents of
mod_client

if so, you can rename the folder (mv is the rename command on linux)
then in config.js you need

  module:'mod_client',

see the topic ‘How to add modules’ in my signature

[dnj0104]

@sdetweil said in Add JS Code to the Mirror:

mod_client

errors folder and file config.js (mmm-mpd) renamed to mod:

[2020-10-24 00:03:42.600] [ERROR]  WARNING! Could not validate config file. Starting with default configuration. Please correct syntax errors at or above this line: ReferenceError: NodeHelper is not defined
    at Object.<anonymous> (/home/pi/MagicMirror/modules/mod_client/node_helper.js:4:18)
    at Module._compile (internal/modules/cjs/loader.js:786:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:798:10)
    at Module.load (internal/modules/cjs/loader.js:645:32)
    at Function.Module._load (internal/modules/cjs/loader.js:560:12)
    at Module.require (internal/modules/cjs/loader.js:685:19)
    at require (internal/modules/cjs/helpers.js:16:16)
    at loadModule (/home/pi/MagicMirror/js/app.js:134:17)
    at loadNextModule (/home/pi/MagicMirror/js/app.js:169:5)
    at /home/pi/MagicMirror/js/app.js:171:6
[2020-10-24 00:03:42.601] [LOG]    Loading module helpers ...
[2020-10-24 00:03:42.602] [LOG]    No helper found for module: alert.
[2020-10-24 00:03:42.603] [LOG]    Initializing new module helper ...
[2020-10-24 00:03:42.604] [LOG]    Module helper loaded: updatenotification
[2020-10-24 00:03:42.605] [LOG]    No helper found for module: clock.
[2020-10-24 00:03:42.616] [LOG]    Initializing new module helper ...
[2020-10-24 00:03:42.617] [LOG]    Module helper loaded: calendar
[2020-10-24 00:03:42.618] [LOG]    No helper found for module: .
[2020-10-24 00:03:42.619] [LOG]    No helper found for module: currentweather.
[2020-10-24 00:03:42.620] [LOG]    No helper found for module: weatherforecast.
[2020-10-24 00:03:42.621] [LOG]    Initializing new module helper ...
[2020-10-24 00:03:42.621] [LOG]    Module helper loaded: newsfeed
[2020-10-24 00:03:42.623] [ERROR]  App threw an error during load
[2020-10-24 00:03:42.625] [ERROR]  ReferenceError: NodeHelper is not defined
    at Object.<anonymous> (/home/pi/MagicMirror/modules/mod_client/node_helper.js:4:18)
    at Module._compile (internal/modules/cjs/loader.js:786:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:798:10)
    at Module.load (internal/modules/cjs/loader.js:645:32)
    at Function.Module._load (internal/modules/cjs/loader.js:560:12)
    at Module.require (internal/modules/cjs/loader.js:685:19)
    at require (internal/modules/cjs/helpers.js:16:16)
    at loadModule (/home/pi/MagicMirror/js/app.js:134:17)
    at loadNextModule (/home/pi/MagicMirror/js/app.js:169:5)
    at /home/pi/MagicMirror/js/app.js:171:6
[2020-10-24 00:03:42.627] [ERROR]  Whoops! There was an uncaught exception...
[2020-10-24 00:03:42.628] [ERROR]  ReferenceError: NodeHelper is not defined
    at Object.<anonymous> (/home/pi/MagicMirror/modules/mod_client/node_helper.js:4:18)
    at Module._compile (internal/modules/cjs/loader.js:786:30)

------result---- dark—screen electron just showed black----------

roll back, Folder named to mod-client and in config.js and mpd_client.js to mod_client.
Result; electron start with no error all my modules shows, but not mod_client aka mpd_client

[sdetweil]

@dnj0104 what MM version are you running on? this problem was fixed in 2.10
do this
from the MM folder

cd ~/MagicMirror
git checkout modules/node_modules/node_helper/index.js