React
migration
byCodemod

React/19/Remove Legacy Context

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Last update

Jul 24, 2024

Removes legacy context methods childContextTypes and getChildContext from react class component. Wraps rendered children with Context.

Example

Before

import PropTypes from 'prop-types';
import React from 'react';
class Parent extends React.Component {
static childContextTypes = {
foo: PropTypes.string.isRequired,
};
getChildContext() {
return { foo: 'bar' };
}
render() {
return <Child />;
}
}

After

import PropTypes from 'prop-types';
import React from 'react';
const Context = React.createContext();
class Parent extends React.Component {
render() {
return <Context value={{ foo: 'bar' }}><Child /></Context>;
}
}

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