js-ast

This is a monorepo with packages to boost the DX of working with AST (using JavaScript programming language) related to:

• JavaScript
• TypeScript
• Svelte

Core goals

1. DX friendly.
2. Cross-runtime friendly—👈 this also means ESM only.
3. e18e friendly.
4. Extensive tests and benchmarks.

Packages

In order to work with AST, the following processes are recognized:

1. Parsing stringified code syntax into AST object.
2. Traversing the AST object.
3. Analyzing the AST object(s).
4. Building programmatically the AST node(s), or an entire object.
5. Printing the AST object back into stringified code syntax.

[!IMPORTANT]

The following lists of packages contains what you can combine together - based on shared AST node interface format - aligned with ESTree specification.

[!NOTE]

Not all of these packages are part of this monorepo.

Parse

Getting the AST object from stringified code syntax.

Traverse

In other words, walk on the AST object.

Analyze

Analyze the received AST object(s). Contains type-guards and utilities.

Build

Sometimes you need to do some code transformation...

Print

Print the AST object or nodes into stringified code syntax.

Contributing

If you can offer your time - refer to Contribution Guide.

Otherwise, consider sponsoring me.

Author

Mateusz "xeho91" Kadlubowski