Display last updated date

_config.ts

@@ -184,6 +184,19 @@ site.scopedUpdates(
   (path) => path.startsWith("/api/deno/"),
 );
 
+// Do more expensive operations if we're building the full site
+if (Deno.env.get("BUILD_TYPE") == "FULL") {
+  console.log("Including resource-heavy operations in the build");
+
+  // Use Lume's built in date function to get the last modified date of the file
+  // This will replace the default date exposed to the page layouts
+  site.data("date", "Git Last Modified");
+
+  // Generate Open Graph images
+  // TODO: Add custom OG iomage generation
+  // site.use(ogImages());
+}
+
 const SKIP_CHECK_URLS = (Deno.env.get("SKIP_CHECK_URLS") || "false")
   .toLowerCase();
 

_includes/doc.tsx

@@ -19,6 +19,10 @@ export default function Page(props: Lume.Data, helpers: Lume.Helpers) {
     throw new Error("Missing sidebar for " + props.url);
   }
 
+  function displayDate(date: Date): string {
+    return date.toISOString().slice(0, 10);
+  }
+
   function walk(
     sidebarItems: SidebarItem[],
   ): [SidebarItem[], number] | undefined {
@@ -153,6 +157,11 @@ export default function Page(props: Lume.Data, helpers: Lume.Helpers) {
                   }}
                 >
                 </h1>
+
+                <div class="text-sm mt-0 mb-8 text-foreground-secondary">
+                  Last updated: {displayDate(props.date)}
+                </div>
+
                 {props.available_since && (
                   <div class="bg-gray-200 rounded-md text-sm py-3 px-4 mb-4 font-semibold">
                     Available since {props.available_since}

deno.json

@@ -15,10 +15,11 @@
   },
   "tasks": {
     "serve": "deno run -A lume.ts -s",
+    "serve:full": "BUILD_TYPE=FULL deno run -A lume.ts -s",
     "serve:no_logs": "LUME_LOGS=WARN SKIP_CHECK_URLS=true deno run -A lume.ts -s",
     "start": "deno task serve",
     "dev": "deno task serve",
-    "build": "deno run -A lume.ts",
+    "build": "BUILD_TYPE=FULL deno run -A lume.ts",
     "debug": "deno task build && deno task prod",
     "prod": "cd _site && deno run --allow-read --allow-env --allow-net server.ts",
     "reference": "cd reference_gen && deno task types && deno task doc",