Angular5到Angular6：Property 'map' does not exist on type 'Actions'. Property 'mergeMap' does

报错内容：

Property 'map' does not exist on type 'Actions'.

Property 'mergeMap' does not exist on type 'Actions'.

错误原因：升级到Angular6后，这些方法在写法上做了调整

解决方案：

1.导入方式改变

import {map, mergeMap} from 'rxjs/operators';

2.写法改变

this.myObservable()
    .map(data => {})
    .mergeMap(data => {})

改为=>

this.myObservable()
    .pipe(
        map(data => {}),
        mergeMap(data => {})
    )