fixup! diigo-cache: RSS in diigo's export shape, from cached items

compare-export.ts: Object.fromEntries(Object.entries(…).map(…)) as
objectMap(original, mapFn), with @endo/common's signature.

Generated-by: Claude Opus 5.5

diigo-cache/scripts/compare-export.ts

@@ -15,6 +15,12 @@ type Item = Record<string, unknown>;
 /** one export item, as read */
 type Exported = { title: string; link: string; description: string };
 
+/** a new object with each value mapped; keys kept (as `objectMap` in
+ * @endo/common) */
+export function objectMap<V, W>(original: Record<string, V>, mapFn: (value: V, key: string) => W): Record<string, W> {
+	return Object.fromEntries(Object.entries(original).map(([k, v]) => [k, mapFn(v, k)]));
+}
+
 const FORBIDDEN = /[\u0000-\u0008\u000B\u000C\u000E-\u001F]/g;
 const clean = (s: string) => s.replace(FORBIDDEN, "");
 
@@ -148,7 +154,7 @@ export function main(
 		export: theirs.length,
 		cache: ours.length,
 		complete,
-		...Object.fromEntries(Object.entries(report).map(([k, v]) => [k, v.length])),
+		...objectMap(report, (links) => links.length),
 	};
 	stdout.write(`${JSON.stringify(counts, null, 1)}\n`);
 	exit(0);