use-invariant v0.1.70

Features

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

Examples

• Example - Next.js
• Examples - create-react-app

Installation

yarn add use-http    or    npm i -S use-http

Usage

Basic Usage

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',
    })
  }

  if (todos.error) return 'Error!'
  if (todos.loading) return 'Loading...'

  return (
    <>
      <button onClick={addTodo}>Add Todo</button>
      {todos.data.map(todo => (
        <div key={todo.id}>{todo.title}</div>
      )}
    </>
  )
}

Destructured

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

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

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

Helper hooks

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

const githubRepos = useFetch({
  baseUrl: `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

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

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

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

Query for todos

import { Provider, useQuery, useMutation } from 'use-http'

function QueryComponent() {
  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

function MutationComponent() {
  const [todoTitle, setTodoTitle] = useState('')
  
  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

function App() {

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

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>
)

Hooks

Options

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

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',
  baseUrl: 'https://example.com',
  onMount: true
})

or

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

Credits

use-http is heavily inspired by the popular http client axios

Feature Requests/Ideas

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

Todos

• port to typescript
• badges
• if no url is specified, and we're in the browser, use window.location.origin
• support for a global context config where you can set base url's (like Apollo's client) but better 😉
• add GraphQL useQuery, useMutation
• Make work with React Suspense current example WIP
• make work with FormData
• get it all working on a SSR codesandbox, this way we can have api to call locally
• Allow option to fetch on server instead of just having loading state
• add timeout
• add debounce
• maybe add a retries: 3 which would specify the amount of times it should retry before erroring out
• tests
• ERROR handling:
  • if doing useQuery('my query') without specifiying a URL in the Provider, throw error
  • make sure options (as 2nd param) to all hooks is an object, if not invariant/throw error
• add array destructuring return types
• github page/website for docs + show comparison with Apollo
• fix code so Maintainability is A
• optimize badges see awesome badge list
• make GraphQL work with React Suspense
• make GraphQL examples in codesandbox
• make cool logo 😜 I kinda want it to move like this one
• maybe add syntax for custom headers like this

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

Mutations 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>
    </>
  )
}