Stability: 0 - Deprecated: Use value === undefined || value === null instead.

    • object {any}
    • Returns: {boolean}

    Returns true if the given object is null or undefined. Otherwise, returns false.

    1. const util = require('util');
    3. util.isNullOrUndefined(0);
    4. // Returns: false
    5. util.isNullOrUndefined(undefined);
    6. // Returns: true
    7. util.isNullOrUndefined(null);
    8. // Returns: true