A quick jump start .... This should handle your Sting - depending moment.js defined input / output format
{
"tabulator": {
"columns": [
{
"title": "Time",
"field": "timestamp",
"width": 100,
"formatter": "datetime",
"formatterParams": {
"inputFormat": "YYYY-MM-DD HH:mm:ss.SSS",
"outputFormat": "HH:mm:ss",
"invalidPlaceholder": "(invalid time)"
}
}
]
}
}