how to use the isyesterday function from date-fns in javascript

To use the isYesterday function from date-fns, you'll first need to install the library using npm or include it in your HTML file:

npm install date-fns
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Once you've installed date-fns, you can import the function into your JavaScript file with:

index.tsx
import { isYesterday } from "date-fns";
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The isYesterday function takes a date object as its argument and returns a boolean value indicating whether the date is yesterday's date or not. Here's an example of how you can use isYesterday:

index.tsx
const today = new Date();
const yesterday = new Date(today);
yesterday.setDate(today.getDate() - 1);

console.log(isYesterday(yesterday)); // Outputs true
console.log(isYesterday(today)); // Outputs false
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In this example, we create a date object for today's date and then create another date object for yesterday's date by subtracting one day from today's date. Then, we use the isYesterday function to check if the yesterday date object is yesterday's date or not. Finally, we use isYesterday to check if the today date object is yesterday's date or not, which should return false.