$max

Update records by setting the value of a numeric column to the maximum of its current value and a specified number. The $max method works similarly to Math.max(), which returns the largest of two values. It is used to ensure that the column’s value doesn’t fall below a given maximum threshold. For example, if the current value is less than the specified number, it will be updated to the specified number.

await Member.$update({
    $where: { 
        age: { 
            $eq: 16 
        } 
    },
    $update: {
        $max: {
          age: 1
        }
    }
});