1. babel-traverse
The Babel Traverse module maintains the overall tree state, and is responsible for replacing, removing, and adding nodes
babel-traverse
Package: babel-traverse
Created by: babel
Last modified: Mon, 13 Jun 2022 04:08:28 GMT
Version: 6.26.0
License: MIT
Downloads: 13,812,964
Repository: https://github.com/babel/babel/tree/master/packages/babel-traverse

Install

npm install babel-traverse
yarn add babel-traverse

babel-traverse

babel-traverse maintains the overall tree state, and is responsible for replacing, removing, and adding nodes.

Install

 $ npm install --save babel-traverse

Usage

We can use it alongside Babylon to traverse and update nodes:

 import * as babylon from "babylon";
import traverse from "babel-traverse";

const code = `function square(n) {
  return n * n;
}`;

const ast = babylon.parse(code);

traverse(ast, {
  enter(path) {
    if (path.isIdentifier({ name: "n" })) {
      path.node.name = "x";
    }
  }
});

:book: Read the full docs here

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