Files
MagicMirror/js
Kristjan ESPERANTO 5f1f5bd291 feat: add ESlint rule no-sparse-arrays for config check (#3911)
Adding a rule to the config checker config so that unexpected commas in
the middle of arrays (reported in issue #3910) are better detected.

Two commas in a row inside the modules array create an empty entry
(`undefined`). JavaScript accepts that syntax, but MagicMirror would
later try to load that “module” and fail.

Alternatively, we could filter out undefined entries, but with this PR,
the user receives a clear message indicating where the error lies, can
easily fix it, and thus has a cleaner configuration.

## Before

```
[2025-10-10 19:33:30.874] [INFO]  Checking config file /home/kristjan/MagicMirror/config/config.js ... 
[2025-10-10 19:33:30.944] [INFO]  Your configuration file doesn't contain syntax errors :) 
[2025-10-10 19:33:30.945] [INFO]  Checking modules structure configuration ... 
[2025-10-10 19:33:31.027] [ERROR] This module configuration contains errors:
undefinedmust be object
```

## After

```
[2025-10-10 19:41:20.030] [INFO]  Checking config file /home/kristjan/MagicMirror/config/config.js ... 
[2025-10-10 19:41:20.107] [ERROR] Your configuration file contains syntax errors :(
Line 91 column 1: Unexpected comma in middle of array.
```
2025-10-13 23:40:23 +02:00
..
2024-08-12 22:52:43 +02:00
2025-09-23 06:27:29 +02:00
2025-09-23 06:27:29 +02:00
2024-09-18 07:37:09 +02:00