import { parse } from "@babel/parser";
import generator from "@babel/generator";
import t from "@babel/types";

const code1 = `
// hello!
a();
`;

const code2 = `
// hello
b();
`;

let ast1 = parse(code1).program;
let ast2 = parse(code2).program;

let ast = t.program([...ast1.body, ...ast2.body]);

console.log(generator.default(ast).code);

// hello!
a();
// hello
b();

// hello!
a();
b();

if (1) {
  a();
}
// /* */
else {
  b();
}