Optimize memory usage for rekoni service

services/rekoni/src/__tests__/docx.smoke.test.ts

@@ -0,0 +1,31 @@
+// Copyright © 2026 Hardcore Engineering Inc.
+//
+// Licensed under the Eclipse Public License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License. You may
+// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { readFile } from 'fs/promises'
+import { join } from 'path'
+import { extract } from '../extractors'
+
+const DOCX_TYPE = 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
+
+describe('docx extractor smoke', () => {
+  it('extracts plain text from a minimal docx', async () => {
+    const fName = join(__dirname, 'fixtures', 'minimal-smoke.docx')
+    const data = await readFile(fName)
+
+    const { matched, content, error } = await extract('minimal-smoke.docx', DOCX_TYPE, data)
+
+    expect(error).toBeUndefined()
+    expect(matched).toBe(true)
+    expect(content).toContain('Hello DOCX smoke test')
+  })
+})

services/rekoni/src/extractors/docx.ts

@@ -1,3 +1,15 @@
+// Copyright © 2026 Hardcore Engineering Inc.
+//
+// Licensed under the Eclipse Public License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License. You may
+// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//
+// See the License for the specific language governing permissions and
+// limitations under the License.
 import { convertToHtml, images } from 'mammoth'
 import { contentType } from 'mime-types'
 import { DocumentExtractor } from './types'
@@ -19,13 +31,7 @@ export const docxExtractor: DocumentExtractor = {
     const htmlData = await convertToHtml(
       { buffer: data },
       {
-        convertImage: images.imgElement((image) => {
-          return image.read('base64').then(function (imageBuffer) {
-            return {
-              src: ''
-            }
-          })
-        })
+        convertImage: images.imgElement(async () => ({ src: '' }))
       }
     )