1 files changed, 62 insertions, 0 deletions
diff --git a/packages/integrations/image/src/utils.ts b/packages/integrations/image/src/utils.ts
new file mode 100644
index 000000000..48249aff1
--- /dev/null
+++ b/packages/integrations/image/src/utils.ts
@@ -0,0 +1,62 @@
+import fs from 'fs';
+import path from 'path';
+import type { OutputFormat, TransformOptions } from './types';
+
+ export function isOutputFormat(value: string): value is OutputFormat {
+	return ['avif', 'jpeg', 'png', 'webp'].includes(value);
+}
+
+export function isAspectRatioString(value: string): value is `${number}:${number}` {
+	return /^\d*:\d*$/.test(value);
+}
+
+export function ensureDir(dir: string) {
+	fs.mkdirSync(dir, { recursive: true });
+}
+
+export function isRemoteImage(src: string) {
+	return /^http(s?):\/\//.test(src);
+}
+
+export async function loadLocalImage(src: string) {
+	try {
+		return await fs.promises.readFile(src);
+	} catch {
+		return undefined;
+	}
+}
+
+export async function loadRemoteImage(src: string) {
+	try {
+		const res = await fetch(src);
+
+		if (!res.ok) {
+			return undefined;
+		}
+
+		return Buffer.from(await res.arrayBuffer());
+	} catch {
+		return undefined;
+	}
+}
+
+export async function loadImage(src: string) {
+	return isRemoteImage(src)
+		? await loadRemoteImage(src)
+		: await loadLocalImage(src);
+}
+
+export function propsToFilename({ src, width, height, format }: TransformOptions) {
+	const ext = path.extname(src);
+	let filename = src.replace(ext, '');
+
+	if (width && height) {
+		return `${filename}_${width}x${height}.${format}`;
+	} else if (width) {
+		return `${filename}_${width}w.${format}`;
+	} else if (height) {
+		return `${filename}_${height}h.${format}`;
+	}
+
+	return format ? src.replace(ext, format) : src;
+}