Abstract Syntax Trees By Example

Abstract Syntax Trees By Example

Abstract syntax trees by example and manipulating abstract syntax trees. Generation using abstract syntax Trees (AST). Abstract Syntax Trees are an example of a tree structure that can have more than two.

Babel is a very powerful code generator and parser, but the documentation doesn’t have many examples of how to use it for parsing, generating, and manipulating abstract syntax trees, I’m collecting some here from my own usage of it.

I’m currently working on a side project which needs a lot of JSX/HTML parsing, manipulation, and generation using Abstract Syntax Trees (AST).

ASTs are very powerful and you can use them to build your own  babel plugins,  macros, or use them directly as part of your app to do custom parsing and manipulations of your code.

You can read more about the basics of ASTs here:

  • Babel plugin handbook.
  • Leveling Up One’s Parsing Game With ASTs
  • KCD’s video on macros

One major resource you will need to check a lot while working on ASTs is the  babel types document, but a big issue I found with it is the lack of examples on how to use the different methods and what type of code will be expected as an output.

So as a resource for myself and others, I’m collecting here some examples from my own usage, and will be updating this post over time with new ones as I’m working on the project:

For all the examples, assume I’m importing these libs:

babel imports

javascript babel programming react

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