本文整理匯總了TypeScript中rxjs/operator/first.first類的典型用法代碼示例。如果您正苦於以下問題：TypeScript first類的具體用法？TypeScript first怎麽用？TypeScript first使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了first類的5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: Error
return moduleRefPromise.then((moduleRef) => {
const transitionId = moduleRef.injector.get(ÉľTRANSITION_ID, null);
if (!transitionId) {
throw new Error(
`renderModule[Factory]() requires the use of BrowserModule.withServerTransition() to ensure
the server-rendered app can be properly bootstrapped into a client app.`);
}
const applicationRef: ApplicationRef = moduleRef.injector.get(ApplicationRef);
return toPromise
.call(first.call(filter.call(applicationRef.isStable, (isStable: boolean) => isStable)))
.then(() => {
const platformState = platform.injector.get(PlatformState);
// Run any BEFORE_APP_SERIALIZED callbacks just before rendering to string.
const callbacks = moduleRef.injector.get(BEFORE_APP_SERIALIZED, null);
if (callbacks) {
for (const callback of callbacks) {
try {
callback();
} catch (e) {
// Ignore exceptions.
console.warn('Ignoring BEFORE_APP_SERIALIZED Exception: ', e);
}
}
}
const output = platformState.renderToString();
platform.destroy();
return output;
});
});示例2: it
it('should ignore nulls', () => {
const v = Validators.composeAsync([observableValidator({'one': true}), null !]) !;
let errorMap: {[key: string]: any} = undefined !;
first.call(v(new FormControl('invalid')))
.subscribe((errors: {[key: string]: any}) => errorMap = errors);
expect(errorMap).toEqual({'one': true});
});示例3:
return moduleRefPromise.then((moduleRef) => {
const applicationRef: ApplicationRef = moduleRef.injector.get(ApplicationRef);
return toPromise
.call(first.call(filter.call(applicationRef.isStable, (isStable: boolean) => isStable)))
.then(() => {
const output = platform.injector.get(PlatformState).renderToString();
platform.destroy();
return output;
});
});示例4: it
it('should collect errors from all the validators', () => {
const v = Validators.composeAsync(
[observableValidator({'one': true}), observableValidator({'two': true})]);
let errorMap: {[key: string]: any};
first.call(v(new FormControl('invalid')))
.subscribe((errors: {[key: string]: any}) => errorMap = errors);
expect(errorMap).toEqual({'one': true, 'two': true});
});示例5: Error
return moduleRefPromise.then((moduleRef) => {
const transitionId = moduleRef.injector.get(ÉľTRANSITION_ID, null);
if (!transitionId) {
throw new Error(
`renderModule[Factory]() requires the use of BrowserModule.withServerTransition() to ensure
the server-rendered app can be properly bootstrapped into a client app.`);
}
const applicationRef: ApplicationRef = moduleRef.injector.get(ApplicationRef);
return toPromise
.call(first.call(filter.call(applicationRef.isStable, (isStable: boolean) => isStable)))
.then(() => {
const output = platform.injector.get(PlatformState).renderToString();
platform.destroy();
return output;
});
});