wrestlingdev.com/app/assets/javascripts/lib/match_state/transport.js

export function loadJson(storage, key) {
  try {
    const rawValue = storage.getItem(key)
    if (!rawValue) return null
    return JSON.parse(rawValue)
  } catch (_error) {
    return null
  }
}

export function saveJson(storage, key, value) {
  try {
    storage.setItem(key, JSON.stringify(value))
    return true
  } catch (_error) {
    return false
  }
}

export function removeKey(storage, key) {
  try {
    storage.removeItem(key)
    return true
  } catch (_error) {
    return false
  }
}

export function performIfChanged(subscription, action, payload, lastSerializedPayload) {
  if (!subscription) return lastSerializedPayload

  const serializedPayload = JSON.stringify(payload)
  if (serializedPayload === lastSerializedPayload) {
    return lastSerializedPayload
  }

  subscription.perform(action, payload)
  return serializedPayload
}