错误运行NG发球角2项目-aot命令
问题描述:
我有一个错误,当我跑我的角2项目用下面的命令:错误运行NG发球角2项目-aot命令
ng serve -aot
堆栈跟踪:
ERROR in ./src/app/app.module.ngfactory.ts
Module build failed: Error: /Users/iguissouma/IdeaProjects/myproject/frontend/src/app/shared/services/message.service.ts (9,5): Public property 'messageSource$' of exported class has or is using name 'Observable' from external module "/Users/iguissouma/IdeaProjects/myproject/frontend/node_modules/rxjs/Observable" but cannot be named.)
at _transpile (/Users/iguissouma/IdeaProjects/myproject/frontend/node_modules/@ngtools/webpack/src/loader.js:101:19)
at /Users/iguissouma/IdeaProjects/myproject/frontend/node_modules/@ngtools/webpack/src/loader.js:128:26
at tryCatch (/Users/iguissouma/IdeaProjects/myproject/frontend/node_modules/es6-promise/dist/lib/es6-promise/-internal.js:195:12)
at invokeCallback (/Users/iguissouma/IdeaProjects/myproject/frontend/node_modules/es6-promise/dist/lib/es6-promise/-internal.js:210:13)
at publish (/Users/iguissouma/IdeaProjects/myproject/frontend/node_modules/es6-promise/dist/lib/es6-promise/-internal.js:178:7)
at flush (/Users/iguissouma/IdeaProjects/myproject/frontend/node_modules/es6-promise/dist/lib/es6-promise/asap.js:94:5)
at nextTickCallbackWith0Args (node.js:420:9)
at process._tickCallback (node.js:349:13)
@ ./src/main.ts 4:0-64
@ multi main
的应用程序正常工作ng serve
如何解决该问题?
message.service.ts
import { Injectable } from '@angular/core'
import { Subject } from 'rxjs/Subject';
import { Message } from 'primeng/primeng';
@Injectable()
export class MessageService {
messageSource = new Subject<Message>();
messageSource$ = this.messageSource.asObservable();
info(summary : string, detail : string) {
this.messageSource.next({severity:'info', summary: summary, detail: detail});
console.log("INFO: " + summary + " DETAIL: " + detail);
}
error(summary : string, detail : string) {
this.messageSource.next({severity:'error', summary: summary, detail: detail});
console.log("ERROR: " + summary + " DETAIL: " + detail);
}
}
答
我修改类似下面message.service.ts为字段声明明确的类型:
import { Injectable } from '@angular/core'
import { Subject } from 'rxjs/Subject';
import { Message } from 'primeng/primeng';
import { Observable } from 'rxjs/Rx';
@Injectable()
export class MessageService {
messageSource:Subject<Message> = new Subject<Message>();
messageSource$:Observable<Message> = this.messageSource.asObservable();
info(summary : string, detail : string) {
this.messageSource.next({severity:'info', summary: summary, detail: detail});
console.log("INFO: " + summary + " DETAIL: " + detail);
}
error(summary : string, detail : string) {
this.messageSource.next({severity:'error', summary: summary, detail: detail});
console.log("ERROR: " + summary + " DETAIL: " + detail);
}
}