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The useHasTableListener hook registers a listener function with the Store that will be called when a Table is added to or removed from the Store.

  tableId: IdOrNull,
  listener: HasTableListener,
  listenerDeps?: DependencyList,
  mutator?: boolean,
  storeOrStoreId?: StoreOrStoreId,
): void

The Id of the Table to listen to, or null as a wildcard.


The function that will be called whenever the matching Table is added or removed.


An optional array of dependencies for the listener function, which, if any change, result in the re-registration of the listener. This parameter defaults to an empty array.


An optional boolean that indicates that the listener mutates Store data.


The Store to register the listener with: omit for the default context Store, provide an Id for a named context Store, or provide an explicit reference.


This has no return value.

This hook is useful for situations where a component needs to register its own specific listener to do more than simply tracking the value (which is more easily done with the useHasTable hook).

You can either listen to a single Table (by specifying its Id as the method's first parameter) or changes to any Table (by providing a null wildcard).

Unlike the addHasTableListener method, which returns a listener Id and requires you to remove it manually, the useHasTableListener hook manages this lifecycle for you: when the listener changes (per its listenerDeps dependencies) or the component unmounts, the listener on the underlying Store will be deleted.


This example uses the useHasTableListener hook to create a listener that is scoped to a single component. When the component is unmounted, the listener is removed from the Store.

import {Provider, useHasTableListener} from 'tinybase/ui-react';
import React from 'react';
import {createRoot} from 'react-dom/client';
import {createStore} from 'tinybase';

const App = ({store}) => (
  <Provider store={store}>
    <Pane />
const Pane = () => {
  useHasTableListener('pets', () =>
    console.log('Table existence changed'),
  return <span>App</span>;

const store = createStore();
const app = document.createElement('div');
const root = createRoot(app);
root.render(<App store={store} />);
// -> 1

store.setCell('pets', 'fido', 'color', 'walnut');
// -> 'Table existence changed'

// -> 0