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

报错内容：

Property 'map' does not exist on type 'Actions<Action>'.

Property 'mergeMap' does not exist on type 'Actions<Action>'.

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 => {})
    )