feat(shared): add statistics to build output

Show count of collections and documents to the output of build:end

.changeset/real-peaches-smash.md

@@ -0,0 +1,6 @@
+---
+"@content-collections/integrations": minor
+"@content-collections/core": minor
+---
+
+Add count of collections and documents to build output

packages/core/src/builder.test.ts

@@ -3,7 +3,7 @@ import { createBuilder as origCreateBuilder } from "./builder";
 import path from "node:path";
 import { existsSync } from "node:fs";
 import fs from "node:fs/promises";
-import { createEmitter, type Emitter } from "./events";
+import { createEmitter, Events, type Emitter } from "./events";
 
 describe("builder", () => {
   afterEach(async () => {
@@ -111,7 +111,25 @@ describe("builder", () => {
       expect(events).toEqual(["builder:start", "builder:end"]);
     });
 
-    it("should resolve to default output directory", async () => {});
+    it("should report some statistics on build:end", async () => {
+      const { builder } = await createBuilder("config.002");
+      const events: Array<Events["builder:end"]> = [];
+
+      builder.on("builder:end", (event) => {
+        events.push(event);
+      });
+
+      await builder.build();
+
+      const event = events[0];
+      if (!event) {
+        throw new Error("Event is undefined");
+      }
+
+      expect(event.stats).toBeDefined();
+      expect(event.stats.collections).toBe(1);
+      expect(event.stats.documents).toBe(1);
+    });
   });
 
   describe("sync", () => {

packages/core/src/builder.ts

@@ -27,6 +27,10 @@ export type BuilderEvents = {
   "builder:end": {
     startedAt: number;
     endedAt: number;
+    stats: {
+      collections: number;
+      documents: number;
+    },
   };
 };
 
@@ -169,9 +173,19 @@ export async function createInternalBuilder(
 
     await Promise.all(pendingOnSuccess.filter(isDefined));
 
+    const stats = collections.reduce((acc, collection) => {
+      acc.collections++;
+      acc.documents += collection.documents.length;
+      return acc;
+    }, {
+      collections: 0,
+      documents: 0
+    });
+
     emitter.emit("builder:end", {
       startedAt,
       endedAt: Date.now(),
+      stats
     });
   }
 

packages/integrations/src/index.ts

@@ -9,7 +9,13 @@ export function configureLogging(builder: Builder) {
 
   builder.on("builder:end", (event) => {
     console.log(
-      "... finished build in",
+      "... finished build of",
+      event.stats.collections,
+      event.stats.collections === 1 ? "collection" : "collections",
+      "and",
+      event.stats.documents,
+      event.stats.documents === 1 ? "document" : "documents",
+      "in",
       event.endedAt - event.startedAt + "ms"
     );
   });