Salesforce でのシームレスな PDF 処理
切り替え不要

import { LightningElement, api, wire } from 'lwc'
import BOOT from '@salesforce/resourceUrl/compdf_boot'
export default class CompdfViewer extends LightningElement {
  async initViewer() {
    const container = this.template.querySelector('.pdf_viewer')
    window.ComPDFKitViewer?.init({
      pdfUrl: this.pdfUrl,
      license: this.licenseKey,
      path: this.assetBase,
      config: window.location.origin + BOOT + '/config.js'
    }, container)
    container.addEventListener('ready', () => {
      this.iframeWindow = container.querySelector('iframe').contentWindow
    })
  }
  handleFileSelected(data) {
    this.iframeWindow.postMessage({ type: 'OPEN_DOCUMENT', ...data }, '*')
  }
}