Angular2在订阅中解析promise？

npm install rxjs

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

const promise = new Promise((resolve, reject) => {
  // Promise的异步操作
});

const observable = from(promise);

observable.pipe(
  map(result => {
    // 对Promise的结果进行转换
    return transformedResult;
  })
).subscribe(result => {
  // 处理转换后的结果
});