how to set default sorting on specific column on sublist created in suitelet ?

AI generated answer (using internal Slack threads):

To set the default sorting on a specific column on a sublist created in a Suitelet, you need to sort your data before adding it to the sublist. The sublist will default to the order you add the rows in SuiteScript. Here's a simple example of how you might do this:

javascript
// Assuming you have an array of objects representing your data
var data = [
    {date: '2021-01-01', value: 'A'},
    {date: '2021-02-01', value: 'B'},
    {date: '2021-01-15', value: 'C'}
];

// Sort the data by date
data.sort(function(a, b){
    return new Date(a.date) - new Date(b.date);
});

// Then add the sorted data to your sublist
for (var i = 0; i < data.length; i++) {
    sublist.setSublistValue({
        id: 'date',
        line: i,
        value: data[i].date
    });
    sublist.setSublistValue({
        id: 'value',
        line: i,
        value: data[i].value
    });
}

Please note that the sort arrow in the UI will always appear on the last column, regardless of the actual sort order of the data. This is a limitation of Suitelets and can be confusing for end users. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******