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. ```
MagicMirror² is an open source modular smart mirror platform. With a growing list of installable modules, the MagicMirror² allows you to convert your hallway or bathroom mirror into your personal assistant. MagicMirror² is built by the creator of the original MagicMirror with the incredible help of a growing community of contributors.
MagicMirror² focuses on a modular plugin system and uses Electron as an application wrapper. So no more web server or browser installs necessary!
Documentation
For the full documentation including installation instructions, please visit our dedicated documentation website: https://docs.magicmirror.builders.
Links
- Website: https://magicmirror.builders
- Documentation: https://docs.magicmirror.builders
- Forum: https://forum.magicmirror.builders
- Technical discussions: https://forum.magicmirror.builders/category/11/core-system
- Discord: https://discord.gg/J5BAtvx
- Blog: https://michaelteeuw.nl/tagged/magicmirror
- Donations: https://magicmirror.builders/#donate
Contributing Guidelines
Contributions of all kinds are welcome, not only in the form of code but also with regards to
- bug reports
- documentation
- translations
For the full contribution guidelines, check out: https://docs.magicmirror.builders/about/contributing.html
Enjoying MagicMirror? Consider a donation!
MagicMirror² is Open Source and free. That doesn't mean we don't need any money.
Please consider a donation to help us cover the ongoing costs like webservers and email services. If we receive enough donations we might even be able to free up some working hours and spend some extra time improving the MagicMirror² core.
To donate, please follow this link.