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blatayue/Async-Await Example.js

Last active September 9, 2017 19:21
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Some practices I use often
Raw
Async-Await Example.js
import someApi from 'some-api'
async function query(queryString) {
let results = await someApi.query(queryString);
return results;
};
query('string').then(results => {
// do whatever here instead of in the function
// or use another async function that doesn't return a promise
});
// like this
async function noThenHere() {
let results = await query('string');
return results.pageOne;
}
console.log(noThenHere()); // Page one of results
Raw
Currying.js
let database = mongoose.connect('mongo://someDatabaseUri');
//ES6 arrow functions return implicitly if you don't add curly braces
let curry = db => query => db.find(query);
let spotifyApi = curry(database);
// this db ORM is syncronous for this example
let results = database.query('someString');
console.log(results)
//{'id':123, 'name': 'example'}
// Might seem like wizardry, but the previous function is identical to
let curry = function(db) {
return function(query) {
return db.find(query)
}
}
Raw
Rest Example.js
let { x, y, ...z } = { x: 1, y: 2, a: 3, b: 4 };
console.log(x); // 1
console.log(y); // 2
console.log(z); // { a: 3, b: 4 }
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