walkNoteDom in worker

.gitmodules

@@ -21,3 +21,4 @@
 [submodule "submodules/zotero-utilities"]
 	path = submodules/zotero-utilities
 	url = https://github.com/zotero/utilities.git
+	branch = master

content/worker/zotero.ts

@@ -4,8 +4,29 @@ importScripts('resource://gre/modules/osfile.jsm')
 
 import type { ITranslator } from '../../translators/lib/translator'
 import type { Translators } from '../../typings/translators'
-export const { DOMParser, XMLSerializer } = require('@xmldom/xmldom')
-import { Utilities as ZU } from '../../submodules/zotero-utilities/utilities.js'
+
+import { DOMParser as XMLDOMParser } from '@xmldom/xmldom'
+
+function hasAttribute(attr: string): boolean {
+  return !!(this.getAttribute?.(attr))
+}
+function upgrade(node) {
+  if (!node.children) {
+    node.children = Array.from(node.childNodes || [])
+    for (const child of node.children) {
+      upgrade(child)
+    }
+  }
+  if (!node.hasAttribute) node.hasAttribute = hasAttribute
+}
+export class DOMParser extends XMLDOMParser {
+  parseFromString(text: string, contentType: string) { // eslint-disable-line @typescript-eslint/explicit-module-boundary-types
+    const doc = super.parseFromString(text, contentType)
+    upgrade(doc)
+    return doc
+  }
+}
+const ZU = require('../../submodules/zotero-utilities/utilities.js')
 
 declare const doExport: () => void
 declare const Translator: ITranslator

esbuild.js

@@ -76,7 +76,7 @@ async function rebuild() {
   })
 
   // worker code
-  const vars = [ 'Zotero', 'workerContext', 'DOMParser', 'XMLSerializer' ]
+  const vars = [ 'Zotero', 'workerContext', 'DOMParser' ]
   const globalName = vars.join('__')
   await bundle({
     entryPoints: [ 'content/worker/zotero.ts' ],
@@ -102,9 +102,7 @@ async function rebuild() {
       ].join('\n'),
     },
     metafile: 'gen/worker.json',
-    external: [
-      'jsdom',
-    ]
+    external: [ 'jsdom' ],
   })
 
   // translators

test/features/export.feature

@@ -13,6 +13,7 @@ Feature: Export
 
     Examples:
       | file                                                                                                                     | references |
+      | Make DOMParser available in background export #2094                                                                      | 1          |
       | Authors export looks like this prefix=von useprefix=true... #2138                                                        | 1          |
       | Zotero's Manuscript 'Type' is mapped to both biblatex's 'type' and 'howpublished' #2114                                  | 1          |
       | Configurable journal abbreviation for citekey #2097                                                                      | 1          |