Fix PDF viewer crash on older browsers

package.json

@@ -2,7 +2,7 @@
   "name": "@rolemodel/spider",
   "description": "Shared high level web components for RoleModel Software and beyond",
   "packageManager": "yarn@4.12.0",
-  "version": "0.0.8",
+  "version": "0.0.9",
   "author": "RoleModel Software",
   "license": "MIT",
   "type": "module",

src/components/pdf-viewer/pdf-viewer.js

@@ -1,5 +1,6 @@
 import { html } from 'lit'
 import { ContextProvider } from '@lit/context'
+import './url-parse-polyfill.js'
 import * as pdfjsLib from 'pdfjs-dist'
 import pdfjsWorker from 'pdfjs-dist/build/pdf.worker.mjs?url'
 import jbig2WasmUrl from 'pdfjs-dist/wasm/jbig2.wasm?url'

src/components/pdf-viewer/url-parse-polyfill.js

@@ -0,0 +1,11 @@
+// Polyfill URL.parse for browsers that don't support it (Safari < 18.2, Chrome < 126).
+// Required by pdfjs-dist v5+.
+if (typeof URL.parse !== 'function') {
+  URL.parse = function (url, base) {
+    try {
+      return new URL(url, base)
+    } catch {
+      return null
+    }
+  }
+}