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Promise
WireBootstrap's
Promise helper allows code to be more readable when working with JavaScript promises.A normal flow requires code logic to be included inside the function passed to the
Promise constructor.function () => {
return new Promise(function(resolve, reject) {
// do work...
if (/* everything turned out fine */)
resolve("Stuff worked!");
else
reject(Error("It broke"));
});
}
Use
wire.Promise to create a promise object that can be used directly to resolve or reject the promise.function () => {
const promise = new wire.Promise();
// do work...
if (/* everything turned out fine */)
promise.resolve("Stuff worked!");
else
promise.reject(Error("It broke"));
return promise.promise();
}
This is the callback version of promise all. Use
wire.when to perform multiple operations and then call a single function.The first parameter to
when is the number of callbacks that are expected. The second parameter is the function to call when all of the operations have been completed.function allDone() {
console.write('all done');
}
const done = wire.when(2, allDone);
// Operation 1
function() {
done();
}();
// Operation 2
function() {
done();
}();
Last modified 1yr ago