init

bin/resources/image/index.ts

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+import { createHash } from "crypto";
+import { Asset, Bundler } from "../../bundler";
+import { Observable } from "../../observable";
+import sharp, { FormatEnum } from "sharp";
+
+type ImageOptions = {
+  format: keyof FormatEnum;
+  name?: string;
+  image: string;
+  width?: number;
+  height?: number;
+  bundler: Bundler;
+};
+
+const createImage = (options: ImageOptions) => {
+  let path =
+    options.name || createHash("sha256").update(options.image).digest("hex");
+  if (options.width) {
+    path += `-w${options.width}`;
+  }
+  if (options.height) {
+    path += `-h${options.height}`;
+  }
+  path += `.${options.format}`;
+  const loader = async () => {
+    const item = sharp(options.image);
+    if (options.width || options.height) {
+      item.resize(options.width, options.height);
+    }
+    item.toFormat(options.format);
+    const content = await item.toBuffer();
+    return {
+      content,
+    };
+  };
+  const observable = new Observable<Asset>(loader);
+  return options.bundler.register(path, observable);
+};
+
+export { createImage };