fix(memory-wiki): tolerate YAML parse errors in wiki frontmatter

hanZeng-08 · hanZeng-08 · commit 4f66821a416f · 2026-06-23T23:12:46.000+08:00
A single wiki page with malformed YAML frontmatter (e.g. markdown bold syntax containing colons inside list items) caused wiki_apply and wiki_lint to fail entirely via YAMLParseError. parseWikiMarkdown now wraps YAML.parse in try-catch: when parsing fails, it returns an empty frontmatter while preserving the body. This prevents one bad file from crashing the entire vault compilation. Fixes #96125
diff --git a/extensions/memory-wiki/src/markdown.test.ts b/extensions/memory-wiki/src/markdown.test.ts
@@ -421,4 +421,16 @@ describe("toWikiPageSummary", () => {
       },
     ]);
   });
+
+  it("tolerates frontmatter with YAML parse errors instead of crashing", () => {
+    const page = toWikiPageSummary({
+      absolutePath: "/tmp/wiki/sources/bad-yaml.md",
+      relativePath: "sources/bad-yaml.md",
+      raw: '---\npageType: source\nid: source.bad-yaml\ntitle: Bad YAML\nsourceIds:\n  - **MEMORY.md 第 235 行**:"加特契纳 1783 年才赐予保罗,1770 年保罗才 16 岁"\n---\n\nBody text.\n',
+    });
+    expect(page).not.toBeNull();
+    expect(page?.hasFrontmatter).toBe(true);
+    expect(page?.title).toBe("bad-yaml"); // title falls back to filename when frontmatter is empty
+    expect(page?.sourceIds).toEqual([]);
+  });
 });
diff --git a/extensions/memory-wiki/src/markdown.ts b/extensions/memory-wiki/src/markdown.ts
@@ -178,15 +178,19 @@ export function parseWikiMarkdown(content: string): ParsedWikiMarkdown {
   if (!match) {
     return { hasFrontmatter: false, frontmatter: {}, body: content };
   }
-  const parsed = YAML.parse(match[1]) as unknown;
-  return {
-    hasFrontmatter: true,
-    frontmatter:
-      parsed && typeof parsed === "object" && !Array.isArray(parsed)
-        ? (parsed as Record<string, unknown>)
-        : {},
-    body: content.slice(match[0].length),
-  };
+  try {
+    const parsed = YAML.parse(match[1]) as unknown;
+    return {
+      hasFrontmatter: true,
+      frontmatter:
+        parsed && typeof parsed === "object" && !Array.isArray(parsed)
+          ? (parsed as Record<string, unknown>)
+          : {},
+      body: content.slice(match[0].length),
+    };
+  } catch {
+    return { hasFrontmatter: true, frontmatter: {}, body: content.slice(match[0].length) };
+  }
 }
 
 export function renderWikiMarkdown(params: {
