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# Modules in React

Table of contents

Import just the modules that you actually need, to reduce Handsontable's impact on the size of your React app.

# Use modules in React

To use modules with Handsontable's React wrapper, follow the steps below:

# Step 1: Import the base module

No matter which optional modules you use, you need to import the base module.

In the entry point file of your application, import the handsontable/base module:

import Handsontable from 'handsontable/base';

# Step 2: Import optional modules

Import optional modules of your choice, along with their registering functions.

For example, to import the numeric cell type module and the UndoRedo plugin module:

import {
registerCellType, // cell types' registering function
NumericCellType,
} from 'handsontable/cellTypes';

import {
registerPlugin, // plugins' registering function
UndoRedo,
} from 'handsontable/plugins';

# Step 3: Register your modules

Register your modules, to let Handsontable recognize them.

For example, to register the numeric cell type module and the UndoRedo plugin module:

registerCellType(NumericCellType);
registerPlugin(UndoRedo);

# Full example

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';

import Handsontable from 'handsontable/base';

import {
  registerCellType,
  NumericCellType,
} from 'handsontable/cellTypes';

import {
  registerPlugin,
  UndoRedo,
} from 'handsontable/plugins';

registerCellType(NumericCellType);
registerPlugin(UndoRedo);

ReactDOM.render(
  <React.StrictMode>
    <App />
  </React.StrictMode>,
  document.getElementById('root')
);

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