本文整理匯總了TypeScript中lib/utils/js-utils.defer函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript defer函數的具體用法？TypeScript defer怎麽用？TypeScript defer使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。
在下文中一共展示了defer函數的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: it
it("allows multiple promises", async function() {
// setup
stubConsoleFn(fnName);
const spiedFn = console[fnName] as Sinon.SinonSpy;
const dEnabled1 = defer<boolean>();
const dEnabled2 = defer<boolean>();
const dEnabled3 = defer<boolean>();
const log = new Log({enabled: false, level: "all"});
// exercise (1)
log.setEnabled(dEnabled1.promise)
log[fnName]("1");
log.setEnabled(dEnabled2.promise)
log[fnName]("2");
log.setEnabled(dEnabled3.promise)
log[fnName]("3");
// verify (1)
sinon.assert.notCalled(spiedFn);
// exercise (2)
dEnabled1.resolve(true);
dEnabled2.resolve(false);
dEnabled3.resolve(true);
await Promise.resolve();
// verify (2)
sinon.assert.calledTwice(spiedFn);
sinon.assert.calledWithExactly(spiedFn, `${C.LOG_PREFIX}[DELAYED] 1`);
sinon.assert.calledWithExactly(spiedFn, `${C.LOG_PREFIX}[DELAYED] 3`);
});示例2: it
it("should work with multiple concurrent changes", async function() {
// setup
asyncSettings = createAsyncSettings({
applyDefault: "DEFAULT:applyDefault",
applyUserValue: "DEFAULT:applyUserValue",
effectivelyUnchanged: "oldValueAndDefault",
});
const dChanges = defer<IStorageChanges>();
const changeListener = sinon.spy((changes) => {
dChanges.resolve(changes);
});
asyncSettings.onChanged.addListener(changeListener);
asyncSettings.startup();
await asyncSettings.whenReady;
stubbedStorage.local.set.resolves();
// exercise
stubbedStorage.onChanged.trigger({
applyDefault: {},
applyUserValue: {newValue: "myNewUserValue"},
effectivelyUnchanged: {oldValue: "oldValueAndDefault"},
settingWithoutDefaultValue: {newValue: "something"},
});
const changes = await dChanges.promise;
// verify
assert.deepEqual(changes, {
applyDefault: {newValue: "DEFAULT:applyDefault"},
applyUserValue: {newValue: "myNewUserValue"},
});
});示例3: promiseObserverTopic
export function promiseObserverTopic(aTopic: XPCOMObserverTopic) {
const deferred = defer<[any, string, any]>();
function callback(subject: any, topic: string, data: any) {
observer.unregister();
deferred.resolve([subject, topic, data]);
}
const observer = new XPCOMObserver(aTopic, callback);
return deferred.promise;
}