python-ast

Python (3) Parser for JavaScript/TypeScript, based on antlr4ts, grammar taken from antlr4's python grammar too (so please report bugs and open pull requests related to grammars upstream)



Singificantly based on java-ast - all credit to Urish

Usage Example

``typescript
import { parse, createVisitor } from 'python-ast';

const countMethods = (source: string) => {
let ast = parse(source);

return createVisitor({
visitFuncdef: () => 1,
defaultResult: () => 0,
aggregateResult: (a, b) => a + b,
}).visit(ast);
};

console.log(
countMethods(
class A:
a: int

def b(self):
pass

def c(self):
pass
class B:
def z(self, i):
pass
),
); // logs 3
``