No so much. I use Gemini AI Studio somewhat to write code for using various npm modules in the function node.
I cannot say that it is better than looking at the documentation or on stackexchange. It makes simple errors doing basic tasks on hugely popular npm modules like tesseract.js (50K downloads per day).
This means I have to read the documentation or paste into VS code so I can use its autosense completion to find and fix the error. Man I really wish Node-RED could do autosense completion.
I guess the reports of LLM for programming tasks 20% faster but actually 19% slower is very true.