@firebolt-js/sdk/dist/lib/Prop/Router.mjs

The Firebolt JS SDK

export default function (params, callbackOrValue, contextParameterCount) {
  const numArgs = params ? Object.values(params).length : 0

  if (numArgs === contextParameterCount && callbackOrValue === undefined) {
    // getter
    return 'getter'
  } else if (
    numArgs === contextParameterCount &&
    typeof callbackOrValue === 'function'
  ) {
    // subscribe
    return 'subscriber'
  } else if (numArgs === 0 && typeof callbackOrValue === 'function') {
    // for x-subscriber-type: global
    return 'subscriber'
  } else if (
    numArgs === contextParameterCount &&
    callbackOrValue !== undefined
  ) {
    // setter
    return 'setter'
  }

  return null
}