What is type null and its use in TypeScript?

The null keyword is considered as a data type in TypeScript as well as in JavaScript. The null keyword indicates the unavailability of a value. It can be used to check whether a value is provided to a particular variable.

Example:

function getData(orgName: string | null, orgDesc: string | null): void {
    if (orgName === null || orgDesc === null) {
        console.log("Not enough values provided to print.");
    }
    else {
        console.log(`Organization Name: ${orgName}, 
        nOrganization Description: ${orgDesc}`);
    }
}

getData(null, null);
getData("Test",
    "A Computer Science Portal.");

Output:

Not enough values provided to print.
Organization Name: Test,
Organization Description: A Computer Science Portal.