as it doesn't exist

…lyzer` (#837)This is done to support node >16, because `rollup-plugin-size-snapshot` hasa dependency to `webpack`.

`createPersistor` defines a `timingMethod` that won't work on iOS.The `timingMethod` utilizes `requestIdleCallback` if it is defined.It turns out that the pollyfilled requestIdleCallback for RN on iOS, requires a second parameter with a specific timeout - where as the native implementation does not. Setting the specific parameter invokes this function across all platforms.