promise all map statement

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12 Jun 2018

1//Here i have filmresponse.json() which will return promise so i uses promise.
2//all otherwise it won't be possible to run it 
3
4let characterResponse = await fetch('http://swapi.co/api/people/2/')
5let characterResponseJson = await characterResponse.json()
6let films = await Promise.all(
7  characterResponseJson.films.map(async filmUrl => {
8    let filmResponse = await fetch(filmUrl)
9    return filmResponse.json()
10  })
11)
12console.log(films)
13

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Eduardo

07 Feb 2017

1// Function to fetch Github info of a user.
2const fetchGithubInfo = async (url) => {
3  console.log(`Fetching ${url}`)
4  const githubInfo = await axios(url) // API call to get user info from Github.
5  return {
6    name: githubInfo.data.name,
7    bio: githubInfo.data.bio,
8    repos: githubInfo.data.public_repos
9  }
10}
11
12// Iterates all users and returns their Github info.
13const fetchUserInfo = async (names) => {
14  const requests = names.map((name) => {
15    const url = `https://api.github.com/users/${name}`
16    return fetchGithubInfo(url) // Async function that fetches the user info.
17     .then((a) => {
18      return a // Returns the user info.
19      })
20  })
21  return Promise.all(requests) // Waiting for all the requests to get resolved.
22}
23
24
25fetchUserInfo(['sindresorhus', 'yyx990803', 'gaearon'])
26 .then(a => console.log(JSON.stringify(a)))
27
28/*
29Output:
30[{
31  "name": "Sindre Sorhus",
32  "bio": "Full-Time Open-Sourcerer ·· Maker ·· Into Swift and Node.js ",
33  "repos": 996
34}, {
35  "name": "Evan You",
36  "bio": "Creator of @vuejs, previously @meteor & @google",
37  "repos": 151
38}, {
39  "name": "Dan Abramov",
40  "bio": "Working on @reactjs. Co-author of Redux and Create React App. Building tools for humans.",
41  "repos": 232
42}]
43*/
44

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