https://i.sstatic.net/mlZS5.png When testing the Vue.config.silent by using Vue.set(a,4) to trigger a warn message, I noticed that even when setting Vue.config.silent=true, the warning information is still being printed.
You can find the code here.
However, after changing the position of the code, the silent mode takes effect and no warning information is displayed.
https://i.sstatic.net/EHDQ9.png
The Vue source code also uses the silent mode to control whether warning information should be printed. https://i.sstatic.net/sRK1F.png