I haven't seen this syntax before and am wondering what it's all about.
var { Navigation } = require('react-router');
The brackets on the left are throwing a syntax error:
unexpected token {
I'm not sure what part of the webpack config is transforming or what the purpose of the syntax is. Is it a Harmony thing? Can someone enlighten me?
It's called destructuring assignment and it's part of the ES2015 standard.
The destructuring assignment syntax is a JavaScript expression that
makes it possible to extract data from arrays or objects using a
syntax that mirrors the construction of array and object literals.
Source: Destructuring assignment reference on MDN
var o = {p: 42, q: true};
var {p, q} = o;
console.log(p); // 42
console.log(q); // true
// Assign new variable names
var {p: foo, q: bar} = o;
console.log(foo); // 42
console.log(bar); // true
var foo = [one, two, three];
// without destructuring
var one = foo[0];
var two = foo[1];
var three = foo[2];
// with destructuring
var [one, two, three] = foo;
