What kind of ES6 syntax is this?
{
[ActionTypes.Repo](state, { username, res }) {
/* ... */
},
[ActionTypes.Repo2](state, { username, res }) {
/* ... */
}
Taken from : https://github.com/quangbuule/redux-example/blob/master/src/js/reducers/Repo.js
Those are method definitions, computed property names and destructuring at work.
Method definitions provide a concise way to create properties that contain functions:
// before
var obj = {
foo: function() {}
};
// now
var obj = {
foo() {}
};
That's the same syntax for creating methods in class definitions.
Computed properties allow you to use the result of any expression as property name in an object literal:
var foo='somePropertyName';
// before
var obj = {};
obj[foo] = 42;
// now
var obj = {
[foo]: 42
};
And of course this also works with method definitions:
var obj = {
[foo]() {}
};
Destructuring is like pattern matching and makes it easier to refer to nested properties of an array/object if thats all you need:
// before
function foo(obj) {
var username = obj.username;
var res = obj.res;
}
// now
function foo({username, res}) {
}
