is it possible to get the previous select command in autoComplate

I am using CoderMirror6 to implement an online latex editor, I want to trigger the subcommend after user select the previous. For example, when user select the \usepackage{} commnend, then the cursor will focus in the middle of {} and popup the package name like xcorlor table and so on to let the user select, this is the code I am using right now, it can trigger the first select and make the cursor focus in the middle of {} but could not auto retrigger the next autocomplate selection:

export function texAutoCompletions(context: CompletionContext) {
  let word = context.matchBefore(/\\[\w\\]*/);
  if (!word) return null;
  if (word.from === word.to && !context.explicit) return null;
  return {
    from: word.from,
    options: [
        snippetCompletion("\\begin{#{1}}",{
        label: "\\begin{}",
        type: "text",
        detail: "env",
      }),
    ],
  };
}

I am trying to define the code like this:

{ label: "\\usepackage{xcolor}", type: "text", apply: "xcolor" },

but I need to know the previous triggered commend to match, how to get the previous user select? or any other clue to do like this? This is the autocomplete config:

autocompletion({ 
                override: [texAutoCompletions],
                tooltipClass: ttc,
                activateOnCompletion: (com: Completion) => {return true},
             }),

The editor doesn’t store executed commands. You can look at the current selection in context.state.selection or define extensions that store more information about recent user actions in the state.