本文整理匯總了TypeScript中angularfire2/database.listChanges函數的典型用法代碼示例。如果您正苦於以下問題:TypeScript listChanges函數的具體用法?TypeScript listChanges怎麽用?TypeScript listChanges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listChanges函數的2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('should stream value at first', (done) => {
const someRef = ref(rando());
const obs = listChanges(someRef, ['child_added']);
const sub = obs.take(1).subscribe(changes => {
const data = changes.map(change => change.payload.val());
expect(data).toEqual(items);
}).add(done);
someRef.set(batch);
});
示例2: it
it('should stream child_added events', (done) => {
const someRef = ref(rando());
someRef.set(batch);
const obs = listChanges(someRef, ['child_added']);
const sub = obs.skip(2).subscribe(changes => {
const data = changes.map(change => change.payload!.val());
expect(data).toEqual(items);
done();
});
});