NetSuite has a number of extensions that can be useful for development, but as an ERP system, it is essential to ensure consistency between development and the original system. Even if the code is written in a way that works well, there are many cases in which the code will not work properly if it is deemed inappropriate from a system perspective. In this context, I would like to introduce an extension that can assist development from the system side.
There is an extension called Netsuite: Search Export. This is an extension based on the NetSuite system that allows users to create a search template called a saved search when retrieving specific data under specific conditions. While it is of course possible to output specific data from a search from code, this extension makes it possible to retrieve stored searches created in the system by converting them into code. This is a kind of GUI-like function that reduces development man-hours.
In this way, NetSuite has many officially issued extensions that can help with development. Extensions can cover areas that need to be taken care of because they are developed within the system.