function createAsyncDebouncer<TFn, TSelected>(
fn,
options,
selector): SolidAsyncDebouncer<TFn, TSelected>;
function createAsyncDebouncer<TFn, TSelected>(
fn,
options,
selector): SolidAsyncDebouncer<TFn, TSelected>;
Defined in: solid-pacer/src/async-debouncer/createAsyncDebouncer.ts:146
A low-level Solid hook that creates an AsyncDebouncer instance to delay execution of an async function.
This hook is designed to be flexible and state-management agnostic - it simply returns a debouncer instance that you can integrate with any state management solution (createSignal, etc).
Async debouncing ensures that an async function only executes after a specified delay has passed since its last invocation. Each new invocation resets the delay timer. This is useful for handling frequent events like window resizing or input changes where you only want to execute the handler after the events have stopped occurring.
Unlike throttling which allows execution at regular intervals, debouncing prevents any execution until the function stops being called for the specified delay period.
Unlike the non-async Debouncer, this async version supports returning values from the debounced function, making it ideal for API calls and other async operations where you want the result of the maybeExecute call instead of setting the result on a state variable from within the debounced function.
Error Handling:
The hook uses TanStack Store for reactive state management. You can subscribe to state changes in two ways:
1. Using debouncer.Subscribe component (Recommended for component tree subscriptions)
Use the Subscribe component to subscribe to state changes deep in your component tree without needing to pass a selector to the hook. This is ideal when you want to subscribe to state in child components.
2. Using the selector parameter (For hook-level subscriptions)
The selector parameter allows you to specify which state changes will trigger reactive updates at the hook level, optimizing performance by preventing unnecessary updates when irrelevant state changes occur.
By default, there will be no reactive state subscriptions and you must opt-in to state tracking by providing a selector function or using the Subscribe component. This prevents unnecessary updates and gives you full control over when your component tracks state changes.
Available state properties:
TFn extends AnyAsyncFunction
TSelected = { }
TFn
AsyncDebouncerOptions<TFn>
(state) => TSelected
SolidAsyncDebouncer<TFn, TSelected>
// Default behavior - no reactive state subscriptions
const { maybeExecute } = createAsyncDebouncer(
async (query: string) => {
const results = await api.search(query);
return results;
},
{ wait: 500 }
);
// Opt-in to track isPending or isExecuting changes (optimized for loading states)
const debouncer = createAsyncDebouncer(
async (query: string) => {
const results = await api.search(query);
return results;
},
{ wait: 500 },
(state) => ({ isPending: state.isPending, isExecuting: state.isExecuting })
);
// Opt-in to track error state changes (optimized for error handling)
const debouncer = createAsyncDebouncer(
async (searchTerm) => {
const data = await searchAPI(searchTerm);
return data;
},
{
wait: 300,
leading: true, // Execute immediately on first call
trailing: false, // Skip trailing edge updates
onError: (error) => {
console.error('API call failed:', error);
}
},
(state) => ({ hasError: state.hasError, lastError: state.lastError })
);
// Access the selected state (will be empty object {} unless selector provided)
const { isPending, isExecuting } = debouncer.state();
// Default behavior - no reactive state subscriptions
const { maybeExecute } = createAsyncDebouncer(
async (query: string) => {
const results = await api.search(query);
return results;
},
{ wait: 500 }
);
// Opt-in to track isPending or isExecuting changes (optimized for loading states)
const debouncer = createAsyncDebouncer(
async (query: string) => {
const results = await api.search(query);
return results;
},
{ wait: 500 },
(state) => ({ isPending: state.isPending, isExecuting: state.isExecuting })
);
// Opt-in to track error state changes (optimized for error handling)
const debouncer = createAsyncDebouncer(
async (searchTerm) => {
const data = await searchAPI(searchTerm);
return data;
},
{
wait: 300,
leading: true, // Execute immediately on first call
trailing: false, // Skip trailing edge updates
onError: (error) => {
console.error('API call failed:', error);
}
},
(state) => ({ hasError: state.hasError, lastError: state.lastError })
);
// Access the selected state (will be empty object {} unless selector provided)
const { isPending, isExecuting } = debouncer.state();