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

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

1. First, install the date-fns library by running the command:

index.ts
npm install date-fns
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2. Then, import the getDecade function from date-fns and use it as shown below:

index.ts
import { getDecade } from 'date-fns';

const date = new Date('1995-12-17T03:24:00');
const decade = getDecade(date); // returns 1990
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In the above example code, we first import the getDecade function from date-fns. Then, we create a Date object for a date of our choice. Finally, we pass this Date object to the getDecade function and it returns the decade (in this case, 1990) as a number.

You can also specify the start of the decade using the options parameter. For example:

index.ts
const date = new Date('2005-02-04T03:24:00');
const decade = getDecade(date, { startOfDecade: new Date('2000-01-01') }); // returns 2000
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In this case, we pass an options parameter specifying that the start of the decade is 2000, and getDecade returns the decade (in this case, 2000) as a number.

Note: Since TypeScript is a superset of JavaScript, you can use the above code examples in a TypeScript project.