我正在关注角大学的一些视频教程。当我运行serve / npm start时,它失败但是如果我只是通过添加/删除空白来重新保存任何文件,它就会成功编译。请查看以下屏幕截图:
My Package.json:
{
"name": "reactive-patterns-course",
"version": "0.0.0",
"license": "MIT",
"angular-cli": {},
"scripts": {
"ng": "ng",
"start": "./node_modules/.bin/ng serve --proxy-config proxy.conf.json",
"rest-api": "./node_modules/.bin/ts-node ./src/server/server.ts",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/animations": "^5.0.0",
"@angular/common": "^5.0.0",
"@angular/compiler": "^5.0.0",
"@angular/core": "^5.0.0",
"@angular/forms": "^5.0.0",
"@angular/http": "^5.0.0",
"@angular/platform-browser": "^5.0.0",
"@angular/platform-browser-dynamic": "^5.0.0",
"@angular/router": "^5.0.0",
"core-js": "^2.4.1",
"rxjs": "^5.5.2",
"zone.js": "^0.8.14",
"@types/express": "^4.0.35",
"@types/lodash": "^4.14.52",
"angularfire2": "^4.0.0-rc.0",
"firebase": "^3.7.4",
"body-parser": "^1.17.1",
"cookies-js": "^1.2.3",
"express": "^4.15.2",
"lodash": "^4.17.4",
"promise-polyfill": "^6.0.2",
"ts-helpers": "^1.1.1"
},
"devDependencies": {
"@angular/cli": "1.5.0",
"@angular/compiler-cli": "^5.0.0",
"@angular/language-service": "^5.0.0",
"@types/jasmine": "~2.5.53",
"@types/jasminewd2": "~2.0.2",
"@types/node": "~6.0.60",
"codelyzer": "~3.2.0",
"jasmine-core": "~2.6.2",
"jasmine-spec-reporter": "~4.1.0",
"karma": "~1.7.0",
"karma-chrome-launcher": "~2.1.1",
"karma-cli": "~1.0.1",
"karma-coverage-istanbul-reporter": "^1.2.1",
"karma-jasmine": "~1.1.0",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.1.2",
"ts-node": "~3.2.0",
"tslint": "~5.7.0",
"typescript": "~2.4.2"
}
}
Could someone help me on this.I did run NPM update but of no avail.I have Angular CLI: 1.7.4
Node: 8.10.0
我这里没有使用任何通用类型。即使有人使用它,它也应该一直失败。请在下面找到app-data文件。
import * as _ from 'lodash';
import {Observable} from 'rxjs/Observable';
import {Lesson} from '../shared/model/lesson';
export interface Observer {
next(data: any);
}
export interface Observable {
subscribe(obs: Observer);
unsubscribe(obs: Observer);
}
interface Subject extends Observer, Observable {
}
class SubjectImplementation implements Subject {
private observers: Observer[] = [];
next(data: any) {
this.observers.forEach(obs => obs.next(data));
}
subscribe(obs: Observer) {
this.observers.push(obs);
}
unsubscribe(obs: Observer) {
_.remove(this.observers, el => el === obs);
}
}
const lessonsListSubject=new SubjectImplementation();
export let lessonList$: Observable = {
subscribe: obs => lessonsListSubject.subscribe(obs),
unsubscribe: obs => lessonsListSubject.unsubscribe(obs)
};
let lessons: Lesson[] = [];
export function initializeLessonsList(newList: Lesson[]) {
lessons = _.cloneDeep(newList);
lessonsListSubject.next(lessons);
}
答案 0 :(得分:0)
错误非常明显(甚至显示错误所在的文件和行号 - app-data.ts(15,37)
) - Observable是泛型类型,需要一种类型。因此,如果没有Observable类型,则无法将某些类型设置为Observable。这是无效 - someVar: Observable
。
在您的代码中,将export let lessonList$: Observable = {
替换为export let lessonList$: Observable<any> = {
或此Observable将流式传输的特定类型。