Justin Ridgewell e229ebbb8a
Optimize async to generator (#8267)
* Optimize async to generator

We can reuse the step function, avoiding a closure on every invocation.

* Rename step
2018-07-05 10:51:16 -04:00

15 lines
894 B
JavaScript

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
export default {
function(name) {
return _asyncToGenerator(function* () {
const uppercasedName = name.upperCase(); // awaits depending on uppercasedName go here
return <Foo name={uppercasedName} />;
})();
}
};