Motivation

I think that most users who create babel-transform-plugin etc. have responded by writing AST using @babel/types or automatically generating AST using @babel/template. However, some users may have encountered the following issues.

• You have to write a lot of AST to achieve what You want to do.
• Global variable name collision in code trying to traverse.

The problem that can't be solved without writing a lot of AST can be solved to some extent by using @babel/template, but the name conflict of global variables cannot be solved and the same code tends to be repeated because you cannot define dependencies between functions.

@babel/helpers solved both problems. But it didn't give the user a way to define helpers.

Therefore, this time, I made a tool like @babel/heleprs that can be used by defining a helper as a user-defined function (UDF).

I hope your development of babel-transform-plugin will be easier. 😄