chore: initial commit

test/helpers.ts

@@ -0,0 +1,20 @@
+import { mkdtemp, rm, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+
+export const TINY_PNG = Buffer.from(
+  "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg==",
+  "base64",
+);
+
+export async function createTempDirectory(): Promise<string> {
+  return mkdtemp(path.join(tmpdir(), "png2pdf-"));
+}
+
+export async function removeTempDirectory(directory: string): Promise<void> {
+  await rm(directory, { recursive: true, force: true });
+}
+
+export async function writeTinyPng(filePath: string): Promise<void> {
+  await writeFile(filePath, TINY_PNG);
+}