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79 lines
2.2 KiB
JavaScript
79 lines
2.2 KiB
JavaScript
// To add a new version, copy and adjust one of the `importPDFJS*` functions below,
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// add the variant to the "switch" statement, and add to `pdfjsVersions` in webpack.config.js
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import 'core-js/stable/global-this' // polyfill for globalThis (used by pdf.js)
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import 'core-js/stable/promise/all-settled' // polyfill for Promise.allSettled (used by pdf.js)
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import getMeta from '@/utils/meta'
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import { createWorker } from '@/utils/worker'
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async function importPDFJS401() {
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const cMapUrl = '/js/pdfjs-dist401/cmaps/'
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const standardFontDataUrl = '/fonts/pdfjs-dist401/'
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const imageResourcesPath = '/images/pdfjs-dist401/'
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// ensure that PDF.js is loaded before importing the viewer
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const PDFJS = await import('pdfjs-dist401/legacy/build/pdf')
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const [PDFJSViewer] = await Promise.all([
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import('pdfjs-dist401/legacy/web/pdf_viewer'),
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import('pdfjs-dist401/legacy/web/pdf_viewer.css'),
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])
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createWorker(() => {
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PDFJS.GlobalWorkerOptions.workerPort = new Worker(
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new URL('pdfjs-dist401/legacy/build/pdf.worker.mjs', import.meta.url) // NOTE: .mjs extension
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)
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})
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return {
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PDFJS,
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PDFJSViewer,
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cMapUrl,
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imageResourcesPath,
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standardFontDataUrl,
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}
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}
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async function importPDFJS213() {
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const cMapUrl = '/js/pdfjs-dist213/cmaps/'
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const standardFontDataUrl = '/fonts/pdfjs-dist213/'
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const imageResourcesPath = '/images/pdfjs-dist213/'
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// ensure that PDF.js is loaded before importing the viewer
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const PDFJS = await import('pdfjs-dist213/legacy/build/pdf')
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const [PDFJSViewer] = await Promise.all([
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import('pdfjs-dist213/legacy/web/pdf_viewer'),
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import('pdfjs-dist213/legacy/web/pdf_viewer.css'),
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])
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createWorker(() => {
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PDFJS.GlobalWorkerOptions.workerPort = new Worker(
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new URL('pdfjs-dist213/legacy/build/pdf.worker.js', import.meta.url)
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)
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})
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return {
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PDFJS,
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PDFJSViewer,
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cMapUrl,
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imageResourcesPath,
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standardFontDataUrl,
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}
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}
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async function importPDFJS() {
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const variant = getMeta('ol-pdfjsVariant', 'default')
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// NOTE: split test variants must have at least 3 characters
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switch (variant) {
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case '213':
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case 'default':
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return importPDFJS213()
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case '401':
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return importPDFJS401()
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}
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}
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export default importPDFJS()
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