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useControlled.js
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Mon, Jan 27, 08:05

useControlled.js
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/* eslint-disable react-hooks/rules-of-hooks, react-hooks/exhaustive-deps */
import * as React from 'react';
export default function useControlled({
controlled,
default: defaultProp,
name,
state = 'value'
}) {
// isControlled is ignored in the hook dependency lists as it should never change.
const {
current: isControlled
} = React.useRef(controlled !== undefined);
const [valueState, setValue] = React.useState(defaultProp);
const value = isControlled ? controlled : valueState;
if (process.env.NODE_ENV !== 'production') {
React.useEffect(() => {
if (isControlled !== (controlled !== undefined)) {
console.error([`MUI: A component is changing the ${isControlled ? '' : 'un'}controlled ${state} state of ${name} to be ${isControlled ? 'un' : ''}controlled.`, 'Elements should not switch from uncontrolled to controlled (or vice versa).', `Decide between using a controlled or uncontrolled ${name} ` + 'element for the lifetime of the component.', "The nature of the state is determined during the first render. It's considered controlled if the value is not `undefined`.", 'More info: https://fb.me/react-controlled-components'].join('\n'));
}
}, [state, name, controlled]);
const {
current: defaultValue
} = React.useRef(defaultProp);
React.useEffect(() => {
if (!isControlled && defaultValue !== defaultProp) {
console.error([`MUI: A component is changing the default ${state} state of an uncontrolled ${name} after being initialized. ` + `To suppress this warning opt to use a controlled ${name}.`].join('\n'));
}
}, [JSON.stringify(defaultProp)]);
}
const setValueIfUncontrolled = React.useCallback(newValue => {
if (!isControlled) {
setValue(newValue);
}
}, []);
return [value, setValueIfUncontrolled];
}

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