Explanation:
The warning message indicates that in the `react-dom.development.js` file, on line 86, a `NaN` value has been received for the `children` attribute. In JSX, the value of a `children` attribute should be a string or a valid JSX expression.
If you are intentionally passing `NaN` as the value for the `children` attribute, you need to cast it to a string. This can be done using the `toString()` method or by using template literals.
Here are a couple of examples to better understand:
// Example 1: Casting NaN to a string
const myComponent = <div children={NaN.toString()} />;
// Example 2: Using template literals to cast NaN to a string
const myComponent = <div children={`${NaN}`} />;
In both examples, `NaN` is cast to a string using either the `toString()` method or template literals. This will prevent the warning from appearing.