Nodejs simple ast parser

explorer.js

const {Parser} = require("acorn")
const recast = require("recast")
const fs = require("fs");

const ast = Parser.parse(fs.readFileSync("./request.js").toString(), Parser.Options = {
    ecmaVersion: "latest"
});
const functionNames = [];
const dependencies = [];

let libraryVariable = "";
recast.visit(
  ast,
  {
      visitCallExpression(path) {
          const {callee, arguments: args} = path.node;
          if (callee.name === "require" && args[0]) {
              if (args[0].value === "http-signature") {
                  console.log(path.node);
                  //console.log(path.parentPath.value.id.name);
                  libraryVariable = path.parentPath.value.id.name;
                  return false;
              }
          }
          this.traverse(path);
      }
  }
)

console.log(libraryVariable);

recast.visit(
  ast,
  {
      visitCallExpression(path) {
          let callee_object = path.node.callee.object;
          if (callee_object != undefined && 'name' in callee_object) {
              if (callee_object.name === libraryVariable) {
                  console.log(callee_object);
                  console.log(path.node.callee.property);
              }
          }
          this.traverse(path);
      }
  }
)