feat: add sharp-backed image rendering

apps/api/src/infrastructure/images/sharp-image-renderer.js

@@ -0,0 +1,21 @@
+import sharp from 'sharp';
+
+export function createSharpImageRenderer() {
+  return async function renderDerivative({ data, maxWidth }) {
+    if (!Buffer.isBuffer(data)) {
+      throw new TypeError('Image data must be provided as a Buffer.');
+    }
+
+    if (!Number.isInteger(maxWidth) || maxWidth <= 0) {
+      throw new TypeError('maxWidth must be a positive integer.');
+    }
+
+    const image = sharp(data);
+    const metadata = await image.metadata();
+
+    const targetWidth = metadata.width && metadata.width > maxWidth ? maxWidth : metadata.width ?? maxWidth;
+    const resized = targetWidth === metadata.width ? image : image.resize({ width: targetWidth, withoutEnlargement: true });
+
+    return resized.webp().toBuffer();
+  };
+}