Use or not?

With the development of. net, third-party components are everywhere and all-encompassing. This also brings joy and distress to developers. In fact, there is no final conclusion. In my opinion, the following conditions must be met:
1. It is best to open the source and use it with confidence.
2. Don't be too large. If it's lightweight, you can see it clearly.
3. mature enough,
4. Removing it will not have a big impact on the construction of your system. It is best to replace it.
5. Never associate it with yourCodeIf you want to take it in the future, you have to perform a major operation.
6. Make sure there is no negative effect