Function: useSharedState()

function useSharedState<T>(
   key, 
   initial, 
   options?): [T, (next) => void];

Like useState, but the value exists in every tab, window, and worker on this origin. Late-joining tabs hydrate to the current value; concurrent writes converge last-writer-wins. Pass options.scope to delimit how much is shared ('everywhere' | 'tabs' | 'tab').

Type Parameters

Type Parameter
T

Parameters

Parameter	Type
key	string
initial	T
options?	UseSharedStateOptions

Returns

[T, (next) => void]