text: export const pubSub = (function (subs) {
    return {
      "pub": function (b) {
        return subs.map (function (c) {
          return c (b)
        })
      },
      "sub": function (b) {
        const c = subs.push (b) - 1
  
        return function () {
          return delete subs[c]
        }
      }
    }
  }) ([])
  