Created
February 23, 2020 04:19
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HTTP requests in Node.js
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const fetch = (url, cb, options = {}) => { | |
const { protocol } = new URL(url); | |
const http = protocol === 'https:' | |
? require('https') | |
: require('http'); | |
options = { headers: { 'User-Agent': 'node.js' }, ...options }; | |
const error = e => console.log(e.message); | |
http.get(url, options, res => { | |
const chunks = []; | |
res.on('data', chunk => chunks.push(chunk)); | |
res.on('end', () => { | |
const data = chunks.join('') | |
try { cb(JSON.parse(data)); } | |
catch (e) { cb(data); } | |
}); | |
}).on('error', error); | |
}; | |
const fetchp = async (url, options) => { | |
return new Promise((resolve, reject) => { | |
fetch(url, json => resolve(json), options); | |
}); | |
}; | |
// callback syntax: | |
fetch('https://api.github.com/users/hinchley', data => console.log(data)); | |
// http request: | |
fetch('http://taco-randomizer.herokuapp.com/random/', data => console.log(data)); | |
// non-json response: | |
fetch('https://google.com', data => console.log(data)); | |
// invalid request: | |
fetch('https://invalid....com', data => console.log(data)); | |
// promisified version: | |
(async () => { | |
const data = await fetchp('https://api.github.com/users/hinchley'); | |
console.log(data); | |
})(); |
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