AyaMorisawa

export default class Trie {
  private tree: any = {};

  public add(s: string): void {
    let cur = this.tree;
    for (const c of s) {
      if (!cur[c]) cur[c] = { isString: false };
      cur = cur[c];
    }
    cur.isString = true;

AyaMorisawa

type Transition<State, Operation> = (state: State, operation: Operation) => State;

class Store<State, Operation> {
    private initialState: State;
    private operations: Operation[] = [];
    private transition: Transition<State, Operation>;
    private currentState: State;

    constructor(initialState: State, transition: Transition<State, Operation>) {
        this.initialState = initialState;