minomikula/js_ast

Parses JavaScript source code to build an AST

NautilusJS Core

This is a JavaScript/TypeScript parser written in Java.

I wrote this project to satisfy the problem of parsing JS/TS code in Java (even Nashorn doesn't do this well, or for modern dialects).

Scope

This parser should be able to process valid JavaScript and TypeScript. It should fully support ES6 features.

Things that this DOES do

• Tokenizing JavaScript/TypeScript
• Parsing JavaScript/TypeScript

Things that this WILL DO (but not right now)

• Desctructuring operations
• Optimize JS ASTs

Things that it MIGHT do in the future

• Interpert generated ASTs
• Compile generated ASTs to Java bytecode
• Transpile to another dialect of ECMAScript (e.g., TypeScript 1.8 -> ES5)
• Format JavaScript prettily

Thisngs that this PROBABLY WON'T DO

but could, if people express interest:

• Automatic semicolon insertion
• Identifiers named certain keywords (e.g., of is reserved by me for for-of loops. However, you can do window['of'] to access it)

Things that this WILL NEVER do

(before the next release):

• Perfect Unicode support
• Some non-strict things