I have an ajax Tabulator in which I'd like to use a custom cell formatter on columns which are dynamically (but similarly) defined.

Let's say I have a dataset of People with "Event" columns, where the ajax response can contain up to 50 Event fields, named Event1,Event2...Event50. I could manually repeat the definitions using the Column Definition Array or Field Name Lookup Object approaches, like:

    autoColumnsDefinitions:{
        PersonID: { title:"ID #", align:"right"},
        Event1: {formatter: eventFormatter},
        Event2: {formatter: eventFormatter},
        ...[variable # of Event cols here]...
    },

...

   function eventFormatter(cell){
      // format event here
   }

However, using a callback seems more appropriate. When I try something like this, my eventFormatter is never invoked, and no errors or warnings are raised.

    autoColumnsDefinitions:function(definitions){
        definitions.forEach((column) => {
            if(column.field.match(/Event/)) {
                column = {
                    formatter:eventFormatter
                }
            }

Is it possible to apply a custom cell formatter to fields that are not explicitly named prior to data loading?