fix ESM issues

README.md

@@ -28,8 +28,8 @@ npm install -S pdf-to-img
 NodeJS (using ESM Modules):
 
 ```js
-const { promises: fs } = require("node:fs");
-const { pdf } = require("pdf-to-img");
+import { promises as fs } from "node:fs";
+import { pdf } from "pdf-to-img";
 
 async function main() {
   let counter = 1;
@@ -45,8 +45,9 @@ main();
 If your app does not support ESM modules, just change the import:
 
 ```diff
-  const { promises: fs } = require("node:fs");
-- const { pdf } = require("pdf-to-img");
++ const { promises: fs } = require("node:fs");
+- import { promises as fs } from "node:fs";
+- import { pdf } from "pdf-to-img";
 
   async function main() {
 +   const { pdf } = await import("pdf-to-img");

bin/cli.mjs

@@ -1,7 +1,6 @@
 #!/usr/bin/env node
 
 // @ts-check
-/* eslint-disable import/extensions */
 import { promises as fs } from "node:fs";
 import { parseArgs } from "node:util";
 import { join } from "node:path";

src/index.ts

@@ -1,12 +1,14 @@
-import "./polyfill"; // do this before pdfjs
-
+import "./polyfill.js"; // do this before pdfjs
+import { createRequire } from "node:module";
 import path from "node:path";
 import * as pdfjs from "pdfjs-dist/legacy/build/pdf.mjs";
 import type { DocumentInitParameters } from "pdfjs-dist/types/src/display/api.js";
 import { NodeCanvasFactory } from "./canvasFactory.js";
 import { parseInput } from "./parseInput.js";
 
-const pdfjsPath = path.dirname(require.resolve("pdfjs-dist/package.json"));
+const pdfjsPath = path.dirname(
+  createRequire(import.meta.url).resolve("pdfjs-dist/package.json")
+);
 
 /** required since k-yle/pdf-to-img#58, the objects from pdfjs are weirdly structured */
 const sanitize = (x: object) => {

vitest.config.ts

@@ -5,7 +5,7 @@ export default defineConfig({
     setupFiles: ["./tests/setupTests.ts"],
     coverage: {
       provider: "v8",
-      exclude: ["node_modules", "bin", ".eslintrc.js"],
+      exclude: ["node_modules", "bin", ".eslintrc.cjs"],
     },
     testTimeout: 30_000,
   },