仅使用angular 7将json数据写入本地JSON文件

ng new my-app
cd my-app
npm install --save-dev @types/node fs-extra

const fs = require('fs-extra');
const jsonData = { "name": "John", "age": 30 };

fs.writeJson('./data.json', jsonData, err => {
  if (err) {
    console.error(err);
    return;
  }
  console.log('Data written to file successfully!');
});

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable({
  providedIn: 'root'
})
export class DataService {

  constructor(private http: HttpClient) { }

  writeDataToFile(data: any): void {
    this.http.post('/api/writeData', data).subscribe(
      () => console.log('Data written to file successfully!'),
      error => console.error(error)
    );
  }
}

import { Component } from '@angular/core';
import { DataService } from './data.service';

@Component({
  selector: 'app-home',
  template: `
    <button (click)="writeData()">Write Data to File</button>
  `
})
export class HomeComponent {

  constructor(private dataService: DataService) { }

  writeData(): void {
    const jsonData = { "name": "John", "age": 30 };
    this.dataService.writeDataToFile(jsonData);
  }
}

node server/server.js