Quickly Locate React Component Source Code with click-to-react-component

In business development, locating the right piece of code is crucial, especially in large React projects where searching by text or className often fails because of styled‑components or internationalization.

The solution presented is the click-to-react-component library, which lets developers open the source file of a component directly from the browser.

First, create a Vite project and install Ant Design:

npx create-vte

Modify main.tsx and install dependencies:

npm install
npm install --save antd

Example App.tsx component (using Ant Design ColorPicker and Space ):

import React from 'react';
import { ColorPicker, Space } from 'antd';
import Aaa from './Aaa';

const Demo = () => (
);

export default Demo;

Supporting components Aaa.tsx and Bbb.tsx demonstrate sliders, switches, and cards (code omitted for brevity).

Run the development server:

npm run dev

After the app renders, you can normally locate elements by searching the displayed text or generated class names, but this approach breaks for styled‑components or i18n‑based strings.

Install the debugging helper:

npm install --save-dev click-to-react-component

Import and render it in main.tsx :

import React from 'react';
import ReactDOM from 'react-dom/client';
import App from './App.tsx';
// @ts-ignore
import { ClickToComponent } from 'click-to-react-component';

ReactDOM.createRoot(document.getElementById('root')!).render(
  <>
);

When the page is open, pressing Option + Click on any element opens the corresponding component source file at the exact line and column in VSCode. Pressing Option + Right‑Click shows a list of all parent components to choose from.

The underlying mechanism works as follows:

Every DOM node created by React carries a hidden property starting with __reactFiber$ that references its Fiber node.

The Fiber node’s _debugOwner property points to the parent Fiber, allowing traversal up the component tree.

For component Fibers, the _debugSource property (added by the Babel plugin @babel/plugin-transform-react-jsx-source ) contains the absolute file path, line, and column of the JSX definition.

The tool constructs a vscode://file/absolutePath:line:column URL, which VSCode understands and opens the file at the correct location.

Additional UI details:

Hovering over an element highlights it using a data‑xxx attribute and CSS selector.

The component state tracks the current target and updates the dataset attribute on mouse move.

Popovers are rendered with @floating-ui , providing a flexible floating layer.

The debugging UI is rendered only in development mode, so it does not affect production builds.

In summary, click-to-react-component offers a fast, reliable way to locate and edit source code for any UI element in a React application, making large‑scale maintenance much more efficient.