how to use the identity function from the rxjs library in javascript

To use the identity function from the rxjs library in JavaScript, first, install rxjs using npm:

index.tsx
npm install rxjs
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Then, import the identity function from the rxjs library:

import { identity } from 'rxjs';
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Finally, you can use the identity function as follows:

const result = identity('Hello, world!');
console.log(result);
// Output: Hello, world!
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The identity function simply returns its input value without any modifications.