如何从输入文件中删除重复的文件(Angular)

<input type="file" (change)="onFileSelected($event)">
<button (click)="removeDuplicates()">删除重复文件</button>

import { Component } from '@angular/core';

@Component({
  selector: 'app-file-duplicate-remover',
  templateUrl: './file-duplicate-remover.component.html',
  styleUrls: ['./file-duplicate-remover.component.css']
})
export class FileDuplicateRemoverComponent {

  selectedFile: File;

  onFileSelected(event: any) {
    this.selectedFile = event.target.files[0];
  }

  removeDuplicates() {
    // 在这里实现删除重复文件的逻辑
    // 可以使用JavaScript或Angular提供的文件处理方法
  }

}

removeDuplicates() {
  const fileReader = new FileReader();
  fileReader.onload = (e) => {
    const fileContent = fileReader.result.toString();
    const lines = fileContent.split('\n');
    const uniqueLines = [...new Set(lines)];
    const uniqueContent = uniqueLines.join('\n');
    const blob = new Blob([uniqueContent], { type: 'text/plain' });

    // 将唯一内容保存到新文件中
    const downloadLink = document.createElement('a');
    downloadLink.href = URL.createObjectURL(blob);
    downloadLink.download = 'unique_file.txt';
    downloadLink.click();
  };

  fileReader.readAsText(this.selectedFile);
}