feat(labels): expands GitHub emoji shortcodes to Unicode

Author: wgordon17

src/app/components/dashboard/ItemRow.tsx

@@ -1,6 +1,7 @@
 import { For, JSX, Show } from "solid-js";
 import { isSafeGitHubUrl } from "../../lib/url";
 import { relativeTime, labelTextColor, formatCount } from "../../lib/format";
+import { expandEmoji } from "../../lib/emoji";
 
 export interface ItemRowProps {
   repo: string;
@@ -78,7 +79,7 @@ export default function ItemRow(props: ItemRowProps) {
                     class="inline-flex items-center rounded-full text-xs px-2 py-0.5 font-medium bg-[var(--lb)] text-[var(--lf)]"
                     style={{ "--lb": bg, "--lf": fg }}
                   >
-                    {label.name}
+                    {expandEmoji(label.name)}
                   </span>
                 );
               }}

src/app/lib/emoji.ts

@@ -0,0 +1,13 @@
+// Vendored from gemoji 8.1.0 — static shortcode→Unicode map (42KB, ~15KB gzipped).
+// Regenerate: node -e "const {gemoji}=require('gemoji');const m={};for(const e of gemoji)for(const n of e.names)m[n]=e.emoji;process.stdout.write(JSON.stringify(m))" > src/app/lib/github-emoji-map.json
+import emojiMap from "./github-emoji-map.json";
+
+const SHORTCODE_RE = /:([a-z0-9_+-]+):/g;
+
+const map = emojiMap as Record<string, string>;
+
+/** Replace GitHub `:shortcode:` patterns with Unicode emoji. Unknown codes are left as-is. */
+export function expandEmoji(text: string): string {
+  if (!text.includes(":")) return text;
+  return text.replace(SHORTCODE_RE, (match, name: string) => map[name] ?? match);
+}

src/app/lib/github-emoji-map.json

@@ -0,0 +1,32 @@
+import { describe, it, expect } from "vitest";
+import { expandEmoji } from "../../src/app/lib/emoji";
+
+describe("expandEmoji", () => {
+  it("expands known shortcodes to Unicode", () => {
+    expect(expandEmoji(":microbe: bug")).toBe("🦠 bug");
+    expect(expandEmoji(":sponge: formatter")).toBe("🧽 formatter");
+    expect(expandEmoji(":rocket:")).toBe("🚀");
+  });
+
+  it("handles multiple shortcodes in one string", () => {
+    expect(expandEmoji(":bug: :fire: critical")).toBe("🐛 🔥 critical");
+  });
+
+  it("leaves unknown shortcodes as-is", () => {
+    expect(expandEmoji(":not_a_real_emoji:")).toBe(":not_a_real_emoji:");
+  });
+
+  it("returns plain text unchanged", () => {
+    expect(expandEmoji("no emoji here")).toBe("no emoji here");
+    expect(expandEmoji("")).toBe("");
+  });
+
+  it("handles mixed known and unknown shortcodes", () => {
+    expect(expandEmoji(":rocket: :fakecode: go")).toBe("🚀 :fakecode: go");
+  });
+
+  it("does not expand partial colon patterns", () => {
+    expect(expandEmoji("time: 3:00")).toBe("time: 3:00");
+    expect(expandEmoji("key:value")).toBe("key:value");
+  });
+});