diff --git a/package-lock.json b/package-lock.json
index a200cce0e..4ef7cafac 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -92,6 +92,7 @@
         "@types/better-sqlite3": "^7.6.9",
         "@types/escape-html": "^1.0.4",
         "@types/express": "^4.17.21",
+        "@types/html": "^1.0.4",
         "@types/ini": "^4.1.0",
         "@types/jsdom": "^21.1.6",
         "@types/mime-types": "^2.1.4",
@@ -1484,6 +1485,12 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/html": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@types/html/-/html-1.0.4.tgz",
+      "integrity": "sha512-Wb1ymSAftCLxhc3D6vS0Ike/0xg7W6c+DQxAkerU6pD7C8CMzTYwvrwnlcrTfsVO/nMelB9KOKIT7+N5lOeQUg==",
+      "dev": true
+    },
     "node_modules/@types/http-cache-semantics": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/@types/http-cache-semantics/-/http-cache-semantics-4.0.1.tgz",
@@ -16229,6 +16236,12 @@
         "@types/node": "*"
       }
     },
+    "@types/html": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@types/html/-/html-1.0.4.tgz",
+      "integrity": "sha512-Wb1ymSAftCLxhc3D6vS0Ike/0xg7W6c+DQxAkerU6pD7C8CMzTYwvrwnlcrTfsVO/nMelB9KOKIT7+N5lOeQUg==",
+      "dev": true
+    },
     "@types/http-cache-semantics": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/@types/http-cache-semantics/-/http-cache-semantics-4.0.1.tgz",
diff --git a/package.json b/package.json
index c150cb460..6cb0af649 100644
--- a/package.json
+++ b/package.json
@@ -115,6 +115,7 @@
     "@types/better-sqlite3": "^7.6.9",
     "@types/escape-html": "^1.0.4",
     "@types/express": "^4.17.21",
+    "@types/html": "^1.0.4",
     "@types/ini": "^4.1.0",
     "@types/jsdom": "^21.1.6",
     "@types/mime-types": "^2.1.4",
diff --git a/src/routes/api/export.js b/src/routes/api/export.js
index a69462e9d..b51b5f689 100644
--- a/src/routes/api/export.js
+++ b/src/routes/api/export.js
@@ -1,7 +1,7 @@
 "use strict";
 
 const zipExportService = require('../../services/export/zip.js');
-const singleExportService = require('../../services/export/single.js');
+const singleExportService = require('../../services/export/single');
 const opmlExportService = require('../../services/export/opml');
 const becca = require('../../becca/becca');
 const TaskContext = require('../../services/task_context');
diff --git a/src/routes/api/import.js b/src/routes/api/import.js
index 5d296ac88..8fcb91d46 100644
--- a/src/routes/api/import.js
+++ b/src/routes/api/import.js
@@ -3,7 +3,7 @@
 const enexImportService = require('../../services/import/enex.js');
 const opmlImportService = require('../../services/import/opml');
 const zipImportService = require('../../services/import/zip.js');
-const singleImportService = require('../../services/import/single.js');
+const singleImportService = require('../../services/import/single');
 const cls = require('../../services/cls');
 const path = require('path');
 const becca = require('../../becca/becca');
diff --git a/src/services/export/single.js b/src/services/export/single.ts
similarity index 85%
rename from src/services/export/single.js
rename to src/services/export/single.ts
index 07fc96403..f7a51dacf 100644
--- a/src/services/export/single.js
+++ b/src/services/export/single.ts
@@ -1,12 +1,15 @@
 "use strict";
 
-const mimeTypes = require('mime-types');
-const html = require('html');
-const utils = require('../utils');
-const mdService = require('./md');
-const becca = require('../../becca/becca');
+import mimeTypes = require('mime-types');
+import html = require('html');
+import utils = require('../utils');
+import mdService = require('./md');
+import becca = require('../../becca/becca');
+import TaskContext = require('../task_context');
+import BBranch = require('../../becca/entities/bbranch');
+import { Response } from 'express';
 
-function exportSingleNote(taskContext, branch, format, res) {
+function exportSingleNote(taskContext: TaskContext, branch: BBranch, format: "html" | "markdown", res: Response) {
     const note = branch.getNote();
 
     if (note.type === 'image' || note.type === 'file') {
@@ -20,6 +23,9 @@ function exportSingleNote(taskContext, branch, format, res) {
     let payload, extension, mime;
 
     let content = note.getContent();
+    if (typeof content !== "string") {
+        throw new Error("Unsupported context type for export.");
+    }
 
     if (note.type === 'text') {
         if (format === 'html') {
@@ -64,7 +70,7 @@ function exportSingleNote(taskContext, branch, format, res) {
     taskContext.taskSucceeded();
 }
 
-function inlineAttachments(content) {
+function inlineAttachments(content: string) {
     content = content.replace(/src="[^"]*api\/images\/([a-zA-Z0-9_]+)\/?[^"]+"/g, (match, noteId) => {
         const note = becca.getNote(noteId);
         if (!note || !note.mime.startsWith('image/')) {