doc: write documentation for useFetch hook (#10)

Author: alamenai

pages/hooks/_meta.json

@@ -1,9 +1,9 @@
 {
   "use-abort-controller": "useAbortController",
+  "use-fetch": "useFetch",
   "use-history": "useHistory",
   "use-local-storage": "useLocalStorage",
-  "use-persistent-state":"usePersistentState",
+  "use-persistent-state": "usePersistentState",
   "use-query-params": "useQueryParams",
-  "use-timeout":"useTimeout"
-
+  "use-timeout": "useTimeout"
 }

pages/hooks/use-fetch.mdx

@@ -0,0 +1,124 @@
+# useFetch
+
+<h3 className="mt-4 text-xl font-normal text-gray-400">A custom hook for fetching data from an API.</h3>
+
+## Add hook
+
+Create a file `use-fetch.ts` and copy & paste the code from [useFetch](/hooks/use-fetch#hook).
+
+## Usage
+
+```tsx
+
+import React, { useEffect, useState } from 'react';
+import { useFetch } from './useFetch';
+
+type Product = {
+    id: string
+    title: string
+}
+
+function App() {
+    const { data, isLoading, error, refetch } = useFetch<Product[]>('https://fakestoreapi.com/products');
+
+    if (isLoading) {
+        return <div>Loading...</div>;
+    }
+
+    if (error) {
+        return <div>Error: {error.message}</div>;
+    }
+
+    return (
+        <div>
+            <h1>useFetch Example</h1>
+            <p>Data: {JSON.stringify(data)}</p>
+            <button onClick={refetch}>Refetch Data</button>
+        </div>
+    );
+}
+
+export default App;
+
+```
+
+### Hook
+
+```ts copy
+import { useEffect, useState } from 'react'
+
+export const useFetch = <DataType>(url: string, trigger = true, requestOptions?: RequestInit) => {
+    const [error, setError] = useState<Error | undefined>(undefined)
+
+    const [data, setData] = useState<DataType | undefined>(undefined)
+
+    const [isLoading, setIsLoading] = useState(!trigger || false)
+
+    const [isTriggered, setIsTriggered] = useState(trigger)
+
+    const startTrigger = () => setIsTriggered(true)
+
+    const fetchData = async () => {
+        try {
+            setIsLoading(true)
+
+            const response = await fetch(url, requestOptions)
+
+            if (!response.ok) {
+                throw new Error(`HTTP error! Status: ${response.status}`)
+            }
+
+            const result = await response.json()
+
+            setData(result)
+
+            setError(undefined)
+        } catch (error) {
+            if (error instanceof Error) {
+                setError(error)
+            }
+        } finally {
+            setIsLoading(false)
+        }
+    }
+
+    useEffect(() => {
+        setIsTriggered(trigger)
+    }, [trigger])
+
+    useEffect(() => {
+        if (isTriggered) {
+            fetchData()
+        }
+    }, [isTriggered])
+
+    return { data, isLoading, error, refetch: fetchData, trigger: startTrigger }
+}
+
+```
+
+## API
+
+[`useFetch<DataType>(url: string, trigger = true, requestOptions?: RequestInit): { data: DataType | undefined, isLoading: boolean, error: Error | undefined, refetch: () => Promise<void>, trigger: () => void }`](/hooks/use-fetch#hook)
+
+A custom hook for fetching data from a URL.
+
+ <h1 className='text-xl font-medium mt-6'>Parameters</h1>
+
+| Parameter | Type | Description |
+| ---- | ---- | ----------- |
+| `url` | `string` | The URL from which to fetch the data. |
+| `trigger` | `boolean` (optional) | If `true`, the fetch operation will be triggered immediately. Default is `true`. |
+| `requestOptions` | `RequestInit` (optional) | Options to pass to the `fetch` function. |
+
+ <h1 className='text-xl font-medium mt-6'>Returns</h1>
+
+An object containing the following properties:
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| `data` | `DataType \| undefined` | The fetched data, if available. |
+| `isLoading` | `boolean` | Indicates whether the fetch operation is in progress. |
+| `error` | `Error \| undefined` | An error object, if an error occurred during the fetch operation. |
+| `refetch` | `() => Promise<void>` | A function to manually trigger the fetch operation. |
+| `trigger` | `() => void` | A function to manually trigger the fetch operation. |

theme.config.jsx

@@ -53,10 +53,14 @@ const config = {
   },
   sidebar: {
     titleComponent({ title, type }) {
+      const newHooks = ["useTimeout", "usePersistent", "useFetch"];
+      
       return (
         <div className="flex items-center justify-between relative w-full">
           <div>{title}</div>
-          {(title === "useTimeout" || title === "usePersistentState") && (
+          {(title === "useTimeout" ||
+            title === "usePersistentState" ||
+            title === "useFetch") && (
             <Badge className=" absolute -right-[0.5em] bg-transparent border-lime-400 text-lime-500 px-[0.5em]">
               New
             </Badge>