@types/babel__traverse

What is @types/babel__traverse?

The @types/babel__traverse package provides TypeScript type definitions for babel-traverse, which is a part of the Babel compiler. babel-traverse allows for navigating and updating the abstract syntax tree (AST) generated by Babel. This package is essential for TypeScript developers working with Babel, as it enables type checking and IntelliSense for babel-traverse functions and objects.

What are @types/babel__traverse's main functionalities?

Visiting AST Nodes

This feature allows you to visit nodes in the AST and perform actions based on the type of node. The code sample demonstrates how to log the name of each identifier in the AST.

import traverse from '@babel/traverse';
import * as t from '@babel/types';

const ast = // some AST;
traverse(ast, {
  enter(path) {
    if (t.isIdentifier(path.node)) {
      console.log('Found an identifier:', path.node.name);
    }
  }
});

Modifying AST Nodes

This feature enables the modification of nodes within the AST. In the provided code sample, every identifier named 'oldName' is renamed to 'newName'.

import traverse from '@babel/traverse';
import * as t from '@babel/types';

const ast = // some AST;
traverse(ast, {
  enter(path) {
    if (t.isIdentifier(path.node, { name: 'oldName' })) {
      path.node.name = 'newName';
    }
  }
});

Other packages similar to @types/babel__traverse

typescript

TypeScript is a superset of JavaScript that compiles to plain JavaScript and provides static typing. While not directly similar in functionality to @types/babel__traverse, TypeScript's compiler API allows for similar AST manipulation and traversal capabilities.

recast

Recast is a JavaScript library for AST manipulation that allows you to parse, visit, and transform JavaScript code. It provides functionality similar to babel-traverse but focuses on preserving the original formatting of the code as much as possible.

jscodeshift

jscodeshift is a toolkit for running codemods over multiple JavaScript or TypeScript files. It uses recast under the hood for parsing and printing but provides a higher-level API for transforming code. It's similar to babel-traverse in its ability to navigate and update ASTs but is more focused on large-scale codebase transformations.

README

Installation

npm install --save @types/babel__traverse

Summary

This package contains type definitions for @babel/traverse (https://github.com/babel/babel/tree/main/packages/babel-traverse).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/babel__traverse.

Additional Details

• Last updated: Wed, 26 Mar 2025 08:02:36 GMT
• Dependencies: @babel/types

Credits

These definitions were written by Troy Gerwien, Marvin Hagemeister, Ryan Petrich, Melvin Groenhoff, Dean L., Ifiok Jr., ExE Boss, and Daniel Tschinder.