PDFTron 中的 CoreControls 未定义错误

Question

我不断收到此错误 Uncaught ReferenceError: CoreControls is not defined

import {AfterViewInit, Component, ElementRef, OnInit, ViewChild} from '@angular/core';
import DocumnetViewer = CoreControls.DocumentViewer;
declare const WebViewer: any;

@Component({
     selector: 'app-root',
     templateUrl: './app.component.html',
     styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit, AfterViewInit {
@ViewChild('viewer') viewer: ElementRef;
wvInstance: any;

ngAfterViewInit(): void {
      /* some code */
      const documentViewer = new DocumnetViewer();
      documentViewer.displayPageLocation(3, 1, 3, true);
     /* some code */
}
}

在第 2 行出现错误。请帮我解决这个问题。提前致谢。

Answer 1

import DocumnetViewer = CoreControls.DocumentViewer;

它，无效的导入语法。你从哪里得到这个代码？这是一个如何将 pdftron 添加到 angular https://www.pdftron.com/documentation/web/get-started/angular/exist-project/

的示例