feat(markdown): preserve figures

src/services/export/markdown.spec.ts

@@ -268,4 +268,15 @@ describe("Markdown export", () => {
         }
     });
 
+    it("preserves figures", () => {
+        const html = /*html*/trimIndentation`\
+              <figure class="image">
+                <img style="aspect-ratio:991/403;" src="Jump to Note_image.png" width="991"
+                height="403">
+              </figure>
+        `;
+        const expected = `<figure class="image"><img style="aspect-ratio:991/403;" src="Jump to Note_image.png" width="991" height="403"></figure>`;
+        expect(markdownExportService.toMarkdown(html)).toBe(expected);
+    });
+
 });

src/services/export/markdown.ts

@@ -45,6 +45,7 @@ function toMarkdown(content: string) {
         instance.addRule("img", buildImageFilter());
         instance.addRule("admonition", buildAdmonitionFilter());
         instance.addRule("inlineLink", buildInlineLinkFilter());
+        instance.addRule("figure", buildFigureFilter());
         instance.use(gfm);
         instance.keep([ "kbd" ]);
     }
@@ -195,6 +196,17 @@ function buildInlineLinkFilter(): Rule {
     }
 }
 
+function buildFigureFilter(): Rule {
+    return {
+        filter(node, options) {
+            return node.nodeName === 'FIGURE'
+        },
+        replacement(content, node) {
+            return (node as HTMLElement).outerHTML;
+        }
+    }
+}
+
 // Taken from upstream since it's not exposed.
 // https://github.com/mixmark-io/turndown/blob/master/src/commonmark-rules.js
 function cleanAttribute(attribute: string | null | undefined) {