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

To use the getUnixTime() function from the date-fns library in TypeScript, you first need to install the library:

npm install date-fns
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Then, you can import the getUnixTime function and use it like this:

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

const date = new Date('2022-01-01');
const unixTime = getUnixTime(date);
console.log(unixTime); // Output: 1640995200
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This code creates a Date object for January 1st, 2022 and then uses the getUnixTime function to convert it into a Unix timestamp. Finally, it logs the Unix timestamp to the console.

Note that getUnixTime returns the number of seconds since Unix epoch (January 1st, 1970), not milliseconds. If you need the timestamp in milliseconds, you can multiply the result by 1000.