Update

* Updated dependencies
* Added esbuild 20.x a supported version
* Switched to ESM

esbuild.mjs

@@ -16,6 +16,8 @@
  */
 
 import esbuild from 'esbuild';
+import { readdir, readFile, writeFile } from 'node:fs/promises';
+import { join } from 'node:path';
 
 await esbuild.build({
 	entryPoints: ['./src/index.ts'],
@@ -25,7 +27,10 @@ await esbuild.build({
 	format: 'cjs',
 	entryNames: '[name]',
 	platform: 'node',
-	external: ['sharp'],
+	external: ['esbuild'],
+	outExtension: {
+		'.js': '.cjs',
+	},
 });
 
 await esbuild.build({
@@ -36,8 +41,34 @@ await esbuild.build({
 	format: 'esm',
 	entryNames: '[name]',
 	platform: 'node',
-	external: ['sharp'],
+	external: ['esbuild'],
 	outExtension: {
 		'.js': '.mjs',
 	},
 });
+
+const cjsDeclarationFiles = async (directoryPath) => {
+	const entries = await readdir(directoryPath, {
+		withFileTypes: true,
+		recursive: true,
+	});
+
+	await Promise.all(
+		entries
+			.filter((entry) => {
+				return entry.isFile() && entry.name.endsWith('.d.ts');
+			})
+			.map(async (file) => {
+				const name = join(file.path, file.name);
+				const newName = name.slice(0, -2) + 'cts';
+
+				const contents = await readFile(name, { encoding: 'utf-8' });
+				await writeFile(
+					newName,
+					contents.replace(/(?<=\.)js(?=['"])/g, 'cjs'),
+				);
+			}),
+	);
+};
+
+await cjsDeclarationFiles('dist');