how to use the issameday function from the date-fns library in typescript

To use the isSameDay function from the date-fns library in TypeScript, you can follow the steps below:

1. Install the date-fns library using your preferred package manager:

index.ts
npm install date-fns
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2. Import the isSameDay function from the date-fns library:

index.ts
import { isSameDay } from 'date-fns';
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3. Use the isSameDay function to compare two dates and determine whether they represent the same day:

index.ts
const date1 = new Date('2022-01-01T00:00:00.000Z');
const date2 = new Date('2022-01-01T12:00:00.000Z');

const result = isSameDay(date1, date2);

console.log(result); // true
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Note that the isSameDay function takes two parameters, which should be instances of the Date object. The function returns a boolean value indicating whether the two dates represent the same day.

Also, if you want to add type annotations to the variables or parameters that you use in your code, you can do so by declaring their types explicitly:

index.ts
const date1: Date = new Date('2022-01-01T00:00:00.000Z');
const date2: Date = new Date('2022-01-01T12:00:00.000Z');

function compareDates(date1: Date, date2: Date): boolean {
  return isSameDay(date1, date2);
}

const result: boolean = compareDates(date1, date2);

console.log(result); // true
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This ensures that your code is more robust and less prone to errors.