Add isomorphic basename utility

packages/editor-ext/src/lib/markdown/utils/basename.ts

@@ -0,0 +1,29 @@
+/**
+ * Flexible `basename` implementation for node and the browser
+ * @see https://stackoverflow.com/a/59907288/2228771
+ */
+export function getBasename(path: string) {
+  // make sure the basename is not empty, if string ends with separator
+  let end = path.length - 1;
+  while (path[end] === '/' || path[end] === '\\') {
+    --end;
+  }
+
+  // support mixing of Win + Unix path separators
+  const i1 = path.lastIndexOf('/', end);
+  const i2 = path.lastIndexOf('\\', end);
+
+  let start: number;
+  if (i1 === -1) {
+    if (i2 === -1) {
+      // no separator in the whole thing
+      return path;
+    }
+    start = i2;
+  } else if (i2 === -1) {
+    start = i1;
+  } else {
+    start = Math.max(i1, i2);
+  }
+  return path.substring(start + 1, end + 1);
+}

packages/editor-ext/src/lib/markdown/utils/turndown.utils.ts

@@ -1,5 +1,6 @@
 import * as _TurndownService from '@joplin/turndown';
 import * as TurndownPluginGfm from '@joplin/turndown-plugin-gfm';
+import { getBasename } from './basename';
 
 // CJS/ESM interop: .default exists in Vite, not in NestJS
 const TurndownService = (_TurndownService as any).default || _TurndownService;
@@ -160,7 +161,7 @@ function video(turndownService: _TurndownService) {
     },
     replacement: function (_content: string, node: HTMLInputElement) {
       const src = node.getAttribute('src') || '';
-      const name = src.split('/').pop() || src;
+      const name = getBasename(src) || src;
       return '[' + name + '](' + src + ')';
     },
   });