mikaelbr

// === Arrays

var [a, b] = [1, 2];
console.log(a, b);
//=> 1 2


// Use from functions, only select from pattern
var foo = () => [1, 2, 3];

kieraneglin

// Problem: how do you access a deeply nested object that you're not certain exists?
// if(object.user && object.user.post && object.user.post[0] && object.user.post[0].comment) {
//    return object.user.post[0].comment
// }
// and that's horrifying.  Here's something better

const idx = (props, object) => props.reduce((prefix, val) => (prefix && prefix[val]) ? prefix[val] : null, object)

// Usage:
nestedObj = {...}