useFetch

^{🐶 React hook for making isomorphic http requests

Main Documentation}

npm i use-http

Features

SSR (server side rendering) support
TypeScript support
1 dependency (use-ssr)
GraphQL support (queries + mutations)
Provider to set default url and options

Usage

⚠️ Examples ^{click me}

Basic Usage (managed state) useFetch

import useFetch from 'use-http'

function Todos() {
  const [todos, setTodos] = useState([])

  const request = useFetch('https://example.com')

  // on mount, initialize the todos
  useEffect(() => {
    initializeTodos()
  }, [])

  async function initializeTodos() {
    const initialTodos = await request.get('/todos')
    setTodos(initialTodos)
  }

  async function addTodo() {
    const newTodo = await request.post('/todos', {
      title: 'no way',
    })
    setTodos(oldTodos => [...oldTodos, newTodo])
  }

  return (
    <>
      <button onClick={addTodo}>Add Todo</button>
      {request.error && 'Error!'}
      {request.loading && 'Loading...'}
      {todos.length > 0 && todos.map(todo => (
        <div key={todo.id}>{todo.title}</div>
      )}
    </>
  )
}

Basic Usage (no managed state) useFetch

import useFetch from 'use-http'

function Todos() {
  const options = { // accepts all `fetch` options
    onMount: true // will fire on componentDidMount
  }

  const todos = useFetch('https://example.com/todos', options)

  function addTodo() {
    todos.post({
      title: 'no way',
    })
  }

  return (
    <>
      <button onClick={addTodo}>Add Todo</button>
      {request.error && 'Error!'}
      {request.loading && 'Loading...'}
      {(todos.data || []).length > 0 && todos.data.map(todo => (
        <div key={todo.id}>{todo.title}</div>
      )}
    </>
  )
}

Destructured useFetch

var [data, loading, error, request] = useFetch('https://example.com')

// want to use object destructuring? You can do that too
var { data, loading, error, request } = useFetch('https://example.com')

Relative routes useFetch

⚠️ baseUrl is no longer supported, it is now only url

var request = useFetch({ url: 'https://example.com' })
// OR
var request = useFetch('https://example.com')

request.post('/todos', {
  no: 'way'
})

useGet, usePost, usePatch, usePut, useDelete

import { useGet, usePost, usePatch, usePut, useDelete } from 'use-http'

const [data, loading, error, patch] = usePatch({
  url: 'https://example.com',
  headers: {
    'Accept': 'application/json; charset=UTF-8'
  }
})

patch({
  yes: 'way',
})

Abort useFetch

const githubRepos = useFetch({
  url: `https://api.github.com/search/repositories?q=`
})

// the line below is not isomorphic, but for simplicity we're using the browsers `encodeURI`
const searchGithubRepos = e => githubRepos.get(encodeURI(e.target.value))

<>
  <input onChange={searchGithubRepos} />
  <button onClick={githubRepos.abort}>Abort</button>
  {githubRepos.loading ? 'Loading...' : githubRepos.data.items.map(repo => (
    <div key={repo.id}>{repo.name}</div>
  ))}
</>

GraphQL Query useFetch

const QUERY = `
  query Todos($userID string!) {
    todos(userID: $userID) {
      id
      title
    }
  }
`

function App() {
  const request = useFetch('http://example.com')

  const getTodosForUser = id => request.query(QUERY, { userID: id })

  return (
    <>
      <button onClick={() => getTodosForUser('theUsersID')}>Get User's Todos</button>
      {request.loading ? 'Loading...' : <pre>{request.data}</pre>}
    </>
  )
}

GraphQL Mutation useFetch

The Provider allows us to set a default url, options (such as headers) and so on.

const MUTATION = `
  mutation CreateTodo($todoTitle string) {
    todo(title: $todoTitle) {
      id
      title
    }
  }
`

function App() {
  const [todoTitle, setTodoTitle] = useState('')
  const request = useFetch('http://example.com')

  const createtodo = () => request.mutate(MUTATION, { todoTitle })

  return (
    <>
      <input onChange={e => setTodoTitle(e.target.value)} />
      <button onClick={createTodo}>Create Todo</button>
      {request.loading ? 'Loading...' : <pre>{request.data}</pre>}
    </>
  )
}

Provider using the GraphQL useMutation and useQuery

Query for todos

import { useQuery } from 'use-http'

export default function QueryComponent() {
  
  // can also do it this way:
  // const [data, loading, error, query] = useQuery`
  // or this way:
  // const { data, loading, error, query } = useQuery`
  const request = useQuery`
    query Todos($userID string!) {
      todos(userID: $userID) {
        id
        title
      }
    }
  `

  const getTodosForUser = id => request.query({ userID: id })
  
  return (
    <>
      <button onClick={() => getTodosForUser('theUsersID')}>Get User's Todos</button>
      {request.loading ? 'Loading...' : <pre>{request.data}</pre>}
    </>
  )
}

Add a new todo

import { useMutation } from 'use-http'

export default function MutationComponent() {
  const [todoTitle, setTodoTitle] = useState('')
  
  // can also do it this way:
  // const request = useMutation`
  // or this way:
  // const { data, loading, error, mutate } = useMutation`
  const [data, loading, error, mutate] = useMutation`
    mutation CreateTodo($todoTitle string) {
      todo(title: $todoTitle) {
        id
        title
      }
    }
  `
  
  const createTodo = () => mutate({ todoTitle })

  return (
    <>
      <input onChange={e => setTodoTitle(e.target.value)} />
      <button onClick={createTodo}>Create Todo</button>
      {loading ? 'Loading...' : <pre>{data}</pre>}
    </>
  )
}

Adding the Provider

These props are defaults used in every request inside the <Provider />. They can be overwritten individually

import { Provider } from 'use-http'
import QueryComponent from './QueryComponent'
import MutationComponent from './MutationComponent'

function App() {

  const options = {
    headers: {
      Authorization: 'Bearer:asdfasdfasdfasdfasdafd'
    }
  }
  
  return (
    <Provider url='http://example.com' options={options}>
      <QueryComponent />
      <MutationComponent />
    <Provider/>
  )
}

Overview

Hooks

Hook	Description
`useFetch`	The base hook
`useGet`	Defaults to a GET request
`usePost`	Defaults to a POST request
`usePut`	Defaults to a PUT request
`usePatch`	Defaults to a PATCH request
`useDelete`	Defaults to a DELETE request
`useQuery`	For making a GraphQL query
`useMutation`	For making a GraphQL mutation

Options

This is exactly what you would pass to the normal js fetch, with a little extra.

Option	Description	Default
`onMount`	Once the component mounts, the http request will run immediately	false
`url`	Allows you to set a base path so relative paths can be used for each request :)	empty string

const {
  data,
  loading,
  error,
  request,
  get,
  post,
  patch,
  put,
  delete  // don't destructure `delete` though, it's a keyword
  del,    // <- that's why we have this (del). or use `request.delete`
  abort,
  query,  // GraphQL
  mutate, // GraphQL
} = useFetch({
  // accepts all `fetch` options such as headers, method, etc.
  url: 'https://example.com', // used to be `baseUrl`
  onMount: true
})

const [data, loading, error, request] = useFetch({
  // accepts all `fetch` options such as headers, method, etc.
  url: 'https://example.com', // used to be `baseUrl`
  onMount: true
})

const {
  get,
  post,
  patch,
  put,
  delete  // don't destructure `delete` though, it's a keyword
  del,    // <- that's why we have this (del). or use `request.delete`
  abort,
  query,  // GraphQL
  mutate, // GraphQL
} = request

Feature Requests/Ideas

If you have feature requests, let's talk about them in this issue!

Todos

  const user = useFetch()
  
  user
    .headers({
      auth: jwt
    })
    .get()

maybe change array destructure syntax to

const [request, response] = useFetch()
const { get, post, loading, ...etc } = request
const { data, ok, status, headers, type, ...restOfResponse } = response

maybe add snake_case -> camelCase option to <Provider />. This would convert all the keys in the response to camelCase. Not exactly sure how this syntax should look because what if you want to have this only go 1 layer deep into the response object. Or if this is just out of scope for this library.

<Provider responseKeys={{ case: 'camel' }}><App /></Provider>

see if you can make this work without causing infinite loop when having request as a dependency of useEffect. I wish the exhaustive dependencies would allow you to do [request.get] instead of forcing [request]. It doesn't cause infinite loop with [request.get] and that's the only method being used inside useEffect
add callback to completely overwrite options. Let's say you have <Provider url='url.com' options={{ headers: 'Auth': 'some-token' }}><App /></Provider>, but for one api call, you don't want that header in your useFetch at all for one instance in your app. This would allow you to remove that

const request = useFetch('https://url.com', globalOptions => {
  delete globalOptions.Auth
  return globalOptions
})

The Goal With Suspense ^{(not implemented yet)}

import React, { Suspense, unstable_ConcurrentMode as ConcurrentMode, useEffect } from 'react'

function WithSuspense() {
  const suspense = useFetch('https://example.com')

  useEffect(() => {
    suspense.read()
  }, [])

  if (!suspense.data) return null

  return <pre>{suspense.data}</pre>
}

function App() (
  <ConcurrentMode>
    <Suspense fallback="Loading...">
      <WithSuspense />
    </Suspense>
  </ConcurrentMode>
)

GraphQL with Suspense ^{(not implemented yet)}

const App = () => {
  const [todoTitle, setTodoTitle] = useState('')
  // if there's no <Provider /> used, useMutation works this way
  const mutation = useMutation('http://example.com', `
    mutation CreateTodo($todoTitle string) {
      todo(title: $todoTitle) {
        id
        title
      }
    }
  `)

  // ideally, I think it should be mutation.write({ todoTitle }) since mutation ~= POST
  const createTodo = () => mutation.read({ todoTitle })
  
  if (!request.data) return null

  return (
    <>
      <input onChange={e => setTodoTitle(e.target.value)} />
      <button onClick={createTodo}>Create Todo</button>
      <pre>{mutation.data}</pre>
    </>
  )
}

eagleera / use-http