Use native ESM

.github/workflows/test.yml

@@ -9,9 +9,9 @@ jobs:
     strategy:
       matrix:
         node-version:
+          - 16
           - 14
           - 12
-          - 10
         os:
           - ubuntu-latest
           - macos-latest

cli.js

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
-'use strict';
-const {spawn} = require('child_process');
-const pngout = require('.');
+import {spawn} from 'node:child_process';
+import process from 'node:process';
+import pngout from './index.js';
 
 const input = process.argv.slice(2);
 

index.js

@@ -1,2 +1,3 @@
-'use strict';
-module.exports = require('./lib').path();
+import lib from './lib/index.js';
+
+export default lib.path();

lib/index.js

@@ -1,16 +1,19 @@
-'use strict';
-const path = require('path');
-const BinWrapper = require('bin-wrapper');
-const pkg = require('../package.json');
+import fs from 'node:fs';
+import process from 'node:process';
+import {fileURLToPath} from 'node:url';
+import BinWrapper from 'bin-wrapper';
 
+const pkg = JSON.parse(fs.readFileSync(new URL('../package.json', import.meta.url)));
 const url = `https://raw.github.com/imagemin/pngout-bin/v${pkg.version}/vendor/`;
 
-module.exports = new BinWrapper()
+const binWrapper = new BinWrapper()
 	.src(`${url}osx/pngout`, 'darwin')
 	.src(`${url}linux/x86/pngout`, 'linux', 'x86')
 	.src(`${url}linux/x64/pngout`, 'linux', 'x64')
 	.src(`${url}freebsd/x86/pngout`, 'freebsd', 'x86')
 	.src(`${url}freebsd/x64/pngout`, 'freebsd', 'x64')
 	.src(`${url}win32/pngout.exe`, 'win32')
-	.dest(path.resolve(__dirname, '../vendor'))
+	.dest(fileURLToPath(new URL('../vendor', import.meta.url)))
 	.use(process.platform === 'win32' ? 'pngout.exe' : 'pngout');
+
+export default binWrapper;

lib/install.js

@@ -1,13 +1,12 @@
-'use strict';
-const path = require('path');
-const bin = require('.');
+import {fileURLToPath} from 'node:url';
+import bin from './index.js';
 
 const args = [
-	path.join(__dirname, '../test/fixtures/test.png'),
-	path.join(__dirname, '../test/fixtures/test-optimized.png'),
+	fileURLToPath(new URL('../test/fixtures/test.png', import.meta.url)),
+	fileURLToPath(new URL('../test/fixtures/test-optimized.png', import.meta.url)),
 	'-s4',
 	'-c6',
-	'-y'
+	'-y',
 ];
 
 bin.run(args).then(() => {

package.json

@@ -4,9 +4,10 @@
   "description": "pngout wrapper that makes it seamlessly available as a local dependency",
   "license": "MIT",
   "repository": "imagemin/pngout-bin",
+  "type": "module",
   "author": {
-    "name": "1000ch",
-    "email": "shogo.sensui@gmail.com",
+    "name": "Shogo Sensui",
+    "email": "shogosensui@gmail.com",
     "url": "github.com/1000ch"
   },
   "maintainers": [
@@ -29,7 +30,7 @@
     "pngout": "cli.js"
   },
   "engines": {
-    "node": ">=10"
+    "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
   },
   "scripts": {
     "postinstall": "node lib/install.js",
@@ -55,10 +56,10 @@
     "bin-wrapper": "^4.0.0"
   },
   "devDependencies": {
-    "ava": "^3.8.0",
+    "ava": "^3.15.0",
     "compare-size": "^3.0.0",
-    "execa": "^4.0.0",
-    "tempy": "^0.5.0",
-    "xo": "^0.30.0"
+    "execa": "^5.1.1",
+    "tempy": "^2.0.0",
+    "xo": "^0.45.0"
   }
 }

readme.md

@@ -1,4 +1,4 @@
-# pngout-bin ![GitHub Actions Status](https://github.com/imagemin/pngout-bin/workflows/test/badge.svg?branch=master)
+# pngout-bin ![GitHub Actions Status](https://github.com/imagemin/pngout-bin/workflows/test/badge.svg)
 
 > [pngout](http://advsys.net/ken/util/pngout.htm) optimizes the size of PNG files losslessly
 
@@ -15,10 +15,10 @@ $ npm install --save pngout-bin
 ## Usage
 
 ```js
-const {execFile} = require('child_process');
-const pngout = require('pngout-bin');
+import {execFile} from 'node:child_process';
+import pngout from 'pngout-bin';
 
-execFile(pngout, ['input.png', 'output.png', '-s0', '-k0', '-f0'], err => {
+execFile(pngout, ['input.png', 'output.png', '-s0', '-k0', '-f0'], error => {
 	console.log('Image minified!');
 });
 ```

test/test.js

@@ -1,21 +1,21 @@
-'use strict';
-const path = require('path');
-const test = require('ava');
-const execa = require('execa');
-const tempy = require('tempy');
-const compareSize = require('compare-size');
-const pngout = require('..');
+import path from 'node:path';
+import {fileURLToPath} from 'node:url';
+import test from 'ava';
+import execa from 'execa';
+import tempy from 'tempy';
+import compareSize from 'compare-size';
+import pngout from '../index.js';
 
 test('minify a PNG', async t => {
 	const temporary = tempy.directory();
-	const src = path.join(__dirname, 'fixtures/test.png');
+	const src = fileURLToPath(new URL('fixtures/test.png', import.meta.url));
 	const dest = path.join(temporary, 'test.png');
 	const args = [
 		src,
 		dest,
 		'-s4',
 		'-c6',
-		'-y'
+		'-y',
 	];
 
 	await execa(pngout, args);