App.service 檔案如下所示：
import { Injectable } from '@nestjs/common';
import { HttpService } from '@nestjs/axios';
import { Observable, firstValueFrom } from 'rxjs';
// import { firstValueFrom } from 'rxjs';
@Injectable()
export class AppService {
constructor(private httpService: HttpService) {}
async getWeatherForecasts() {
const url =
'http://www.7timer.info/bin/api.pl?lon=113.17&lat=23.09&product=astro&output=json';
const { data } = await firstValueFrom(this.httpService.get(url));
return data;
}
}
Package.json 檔案如下所示：
"dependencies": {
"@fmr-pr103625/nest-scaffold": "^1.5.5",
"@nestjs/apollo": "^10.0.9",
"@nestjs/axios": "0.0.7",
"@nestjs/common": "^7.6.18",
"@nestjs/core": "^7.6.18",
"@nestjs/graphql": "^10.0.9",
"@nestjs/platform-express": "^7.6.18",
"apollo-server-express": "^3.6.7",
"axios": "^0.27.2",
"graphql": "^16.3.0",
"graphql-tools": "^8.2.8",
"isomorphic-fetch": "^3.0.0",
"reflect-metadata": "^0.1.13",
"rimraf": "^3.0.2",
"rxjs": "^5.5.10",
"rxjs-compat": "^6.6.7",
"ts-morph": "^14.0.0"
},
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我無法從 rxjs 匯入 firstValueForm。
我已經嘗試過的事情：
- 將 rxjs 的版本從 6 降級。
uj5u.com熱心網友回復：
firstValueFrom引入Rxjs 7作為替代toPromise
RxJS 6.x 到 7.x 詳細變更串列
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