### Installing svelte-infinite

Source: https://github.com/ndom91/svelte-infinite/blob/main/README.md

This snippet shows how to install the s svelte-infinite package using popular Node.js package managers: npm, pnpm, and yarn. Choose the command corresponding to your preferred package manager.

```bash
npm install svelte-infinite
pnpm install svelte-infinite
yarn add svelte-infinite
```

--------------------------------

### Basic Usage of InfiniteLoader in Svelte

Source: https://github.com/ndom91/svelte-infinite/blob/main/README.md

This Svelte snippet demonstrates the basic usage of the InfiniteLoader component. It imports InfiniteLoader and LoaderState, initializes a LoaderState and an array for items, defines an asynchronous function to load more data, and renders the InfiniteLoader component wrapping an #each block to display items.

```svelte
<script lang="ts">
  import { InfiniteLoader, LoaderState } from "svelte-infinite"

  const loaderState = new LoaderState()
  const allItems = $state([])

  const loadMore = async () => {
    const res = fetch("...")
    const data = await res.json()
    allItems.push(...data)
    loaderState.loaded()
  }
</script>

<InfiniteLoader {loaderState} triggerLoad={loadMore}>
  {#each allItems as user (user.id)}
    <div>{user.name}</div>
  {/each}
</InfiniteLoader>
```

--------------------------------

### Implementing Paginated Data Loading with Svelte Infinite

Source: https://github.com/ndom91/svelte-infinite/blob/main/README.md

This Svelte component demonstrates integrating svelte-infinite to load paginated data. It defines an async function `loadMore` that fetches data from an API endpoint, updates the `allItems` state, and manages the loader state using `LoaderState`. It also shows how to use the `InfiniteLoader` component and define custom UI for loading and error states using `#snippet`.

```Svelte
<script lang="ts">
  // +page.svelte
  import { InfiniteLoader, LoaderState } from "svelte-infinite"
  import UserCard from "$components/UserCard.svelte"

  const loaderState = new LoaderState()
  const LOAD_LIMIT = 20
  // Assume `$page.data.items` is the `+page.server.ts` server-side loaded
  // and rendered initial 20 items of the list
  const allItems = $state<{ id: number, body: string }[]>($page.data.items)
  let pageNumber = $state(1)

  // 1. This `loadMore` function is what we'll pass the InfiniteLoader component
  // to its `triggerLoad` prop.
  const loadMore = async () => {
    try {
      pageNumber += 1
      const limit = String(LOAD_LIMIT)
      const skip = String(LOAD_LIMIT * (pageNumber - 1))

      // If there are less results on the first page (page.server loaded data)
      // than the limit, don't keep trying to fetch more. We're done.
      if (allItems.length < LOAD_LIMIT) {
        loaderState.complete()               // <--- using loaderState
        return
      }

      const searchParams = new URLSearchParams({ limit, skip })

      // Fetch an endpoint that supports server-side pagination
      const dataResponse = await fetch(`/api/data?${searchParams}`)

      // Ideally, like most paginated endpoints, this should return the data
      // you've requested for your page, as well as the total amount of data
      // available to page through

      if (!dataResponse.ok) {
        loaderState.error()                 // <--- using loaderState

        // On errors, set the pageNumber back so we can retry
        // that page's data on the next 'loadMore' attempt
        pageNumber -= 1
        return
      }
      const data = await dataResponse.json()

      // If we've successfully received data, push it to the reactive state variable
      if (data.items.length) {
        allItems.push(...data.items)
      }

      // If there are more (or equal) number of items loaded as are totally available
      // from the API, don't keep trying to fetch more. We're done.
      if (allItems.length >= data.totalCount) {
        loaderState.complete()               // <--- using loaderState
      } else {
        loaderState.loaded()                 // <--- using loaderState
      }
    } catch (error) {
      console.error(error)
      loaderState.error()                   // <--- using loaderState
      pageNumber -= 1
    }
  }
</script>

<main class="container">

    <!-- 2. Here you wrap your items with the InfiniteLoader component -->
    <InfiniteLoader {loaderState} triggerLoad={loadMore}>
      {#each allItems as user (user.id)}
        <UserCard {user} />
      {/each}

      <!-- 3. There are a few optional snippets for customizing what is shown at the bottom
           of the scroller in various states, see the 'Snippets' section for more details -->
      {#snippet loading()}
        Loading...
      {/snippet}
      {#snippet error(load)}
        <div>Error fetching data</div>
        <button onclick={load}>Retry</button>
      {/snippet}
    </InfiniteLoader>
</main>
```

--------------------------------

### InfiniteLoader Component Props

Source: https://github.com/ndom91/svelte-infinite/blob/main/README.md

Configuration options for the InfiniteLoader component, including the state controller, the data loading function, IntersectionObserver options, and loop detection parameters.

```TypeScript
loaderState: LoaderState
```

```TypeScript
triggerLoad: () => Promise<void>
```

```TypeScript
intersectionOptions: IntersectionObserverInit = { rootMargin: "0px 0px 200px 0px" }
```

```TypeScript
loopTimeout: number = 3000
```

```TypeScript
loopDetectionTimeout: number = 2000
```

```TypeScript
loopMaxCalls: number = 5
```

--------------------------------

### InfiniteLoader Component Snippets

Source: https://github.com/ndom91/svelte-infinite/blob/main/README.md

Customizable content slots (snippets in Svelte 5) for the InfiniteLoader component, allowing users to define what is displayed in different states like loading, no data, error, etc.

```Svelte
loading
```

```Svelte
noResults
```

```Svelte
noData
```

```Svelte
coolingOff
```

```Svelte
error
```

--------------------------------

### loaderState Controller Methods

Source: https://github.com/ndom91/svelte-infinite/blob/main/README.md

The loaderState controller provides methods to manage the internal state of the InfiniteLoader component, signaling successful loads, errors, completion, or requiring a reset.

```JavaScript
loaderState.loaded()
```

```JavaScript
loaderState.error()
```

```JavaScript
loaderState.complete()
```

```JavaScript
loaderState.reset()
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.