Require Node.js 8

.editorconfig

@@ -7,6 +7,6 @@ charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[*.{json,yml}]
-indent_size = 2
+[*.yml]
 indent_style = space
+indent_size = 2

.gitattributes

@@ -1,2 +1 @@
-* text=auto
-*.js text eol=lf
+* text=auto eol=lf

.gitignore

@@ -1,3 +1,4 @@
 node_modules
+yarn.lock
 vendor/optipng*
 vendor/man

.travis.yml

@@ -1,7 +1,7 @@
 language: node_js
 node_js:
+  - '12'
   - '10'
   - '8'
-  - '6'
 before_install:
   - 'sudo chown $USER /usr/local'

lib/index.js

@@ -1,9 +1,9 @@
 'use strict';
 const path = require('path');
 const BinWrapper = require('bin-wrapper');
-const pkg = require('../package.json');
+const packageJson = require('../package.json');
 
-const url = `https://raw.githubusercontent.com/imagemin/optipng-bin/v${pkg.version}/vendor/`;
+const url = `https://raw.githubusercontent.com/imagemin/optipng-bin/v${packageJson.version}/vendor/`;
 
 module.exports = new BinWrapper()
 	.src(`${url}macos/optipng`, 'darwin')

lib/install.js

@@ -4,23 +4,28 @@ const binBuild = require('bin-build');
 const log = require('logalot');
 const bin = require('.');
 
-bin.run(['--version']).then(() => {
-	log.success('optipng pre-build test passed successfully');
-}).catch(error => {
-	log.warn(error.message);
-	log.warn('optipng pre-build test failed');
-	log.info('compiling from source');
+(async () => {
+	try {
+		await bin.run(['--version']);
+		log.success('optipng pre-build test passed successfully');
+	} catch (error) {
+		log.warn(error.message);
+		log.warn('optipng pre-build test failed');
+		log.info('compiling from source');
 
-	// From https://sourceforge.net/projects/optipng/files/OptiPNG/
-	binBuild.file(path.resolve(__dirname, '../vendor/source/optipng.tar.gz'), [
-		`./configure --with-system-zlib --prefix="${bin.dest()}" --bindir="${bin.dest()}"`,
-		'make install'
-	]).then(() => {
-		log.success('optipng built successfully');
-	}).catch(error => {
-		log.error(error.stack);
+		try {
+			// From https://sourceforge.net/projects/optipng/files/OptiPNG/
+			await binBuild.file(path.resolve(__dirname, '../vendor/source/optipng.tar.gz'), [
+				`./configure --with-system-zlib --prefix="${bin.dest()}" --bindir="${bin.dest()}"`,
+				'make install'
+			]);
 
-		// eslint-disable-next-line unicorn/no-process-exit
-		process.exit(1);
-	});
-});
+			log.success('optipng built successfully');
+		} catch (error) {
+			log.error(error.stack);
+
+			// eslint-disable-next-line unicorn/no-process-exit
+			process.exit(1);
+		}
+	}
+})();

license

@@ -1,21 +1,9 @@
-The MIT License (MIT)
+MIT License
 
 Copyright (c) Imagemin
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package.json

@@ -1,62 +1,45 @@
 {
-  "name": "optipng-bin",
-  "version": "5.1.0",
-  "description": "OptiPNG wrapper that makes it seamlessly available as a local dependency",
-  "license": "MIT",
-  "repository": "imagemin/optipng-bin",
-  "author": {
-    "name": "Sindre Sorhus",
-    "email": "sindresorhus@gmail.com",
-    "url": "sindresorhus.com"
-  },
-  "maintainers": [
-    {
-      "name": "Kevin Mårtensson",
-      "email": "kevinmartensson@gmail.com",
-      "url": "github.com/kevva"
-    },
-    {
-      "name": "Shinnosuke Watanabe",
-      "url": "github.com/shinnn"
-    }
-  ],
-  "bin": {
-    "optipng": "cli.js"
-  },
-  "engines": {
-    "node": ">=6"
-  },
-  "scripts": {
-    "postinstall": "node lib/install.js",
-    "test": "xo && ava"
-  },
-  "files": [
-    "index.js",
-    "cli.js",
-    "lib",
-    "vendor/source"
-  ],
-  "keywords": [
-    "imagemin",
-    "compress",
-    "image",
-    "img",
-    "minify",
-    "optimize",
-    "png",
-    "optipng"
-  ],
-  "dependencies": {
-    "bin-build": "^3.0.0",
-    "bin-wrapper": "^4.0.0",
-    "logalot": "^2.0.0"
-  },
-  "devDependencies": {
-    "ava": "*",
-    "bin-check": "^4.0.1",
-    "compare-size": "^3.0.0",
-    "execa": "^1.0.0",
-    "tempy": "^0.2.1",
-    "xo": "*"
-  }
+	"name": "optipng-bin",
+	"version": "5.1.0",
+	"description": "OptiPNG wrapper that makes it seamlessly available as a local dependency",
+	"license": "MIT",
+	"repository": "imagemin/optipng-bin",
+	"bin": {
+		"optipng": "cli.js"
+	},
+	"engines": {
+		"node": ">=8"
+	},
+	"scripts": {
+		"postinstall": "node lib/install.js",
+		"test": "xo && ava"
+	},
+	"files": [
+		"index.js",
+		"cli.js",
+		"lib",
+		"vendor/source"
+	],
+	"keywords": [
+		"imagemin",
+		"compress",
+		"image",
+		"minify",
+		"optimize",
+		"png",
+		"optipng"
+	],
+	"dependencies": {
+		"bin-build": "^3.0.0",
+		"bin-wrapper": "^4.0.0",
+		"logalot": "^2.0.0"
+	},
+	"devDependencies": {
+		"ava": "^1.4.1",
+		"bin-check": "^4.0.1",
+		"compare-size": "^3.0.0",
+		"execa": "^1.0.0",
+		"tempy": "^0.3.0",
+		"xo": "^0.24.0"
+	}
 }

readme.md

@@ -15,12 +15,16 @@ $ npm install --save optipng-bin
 ## Usage
 
 ```js
+const {promisify} = require('util');
 const {execFile} = require('child_process');
 const optipng = require('optipng-bin');
 
-execFile(optipng, ['-out', 'output.png', 'input.png'], err => {
+const execFileP = promsify(execFile);
+
+(async () => {
+	await execFile(optipng, ['-out', 'output.png', 'input.png']);
 	console.log('Image minified!');
-});
+})();
 ```
 
 
@@ -33,8 +37,3 @@ $ npm install --global optipng-bin
 ```
 $ optipng --help
 ```
-
-
-## License
-
-MIT © [Imagemin](https://github.com/imagemin)

test/test.js

@@ -32,19 +32,19 @@ test('return path to binary and verify that it is working', async t => {
 
 test('minify a PNG', async t => {
 	const tmp = tempy.directory();
-	const src = path.join(__dirname, 'fixtures/test.png');
-	const dest = path.join(tmp, 'test.png');
-	const args = [
+	const sourcePath = path.join(__dirname, 'fixtures/test.png');
+	const destinationPath = path.join(tmp, 'test.png');
+	const arguments_ = [
 		'-strip',
 		'all',
 		'-clobber',
 		'-out',
-		dest,
-		src
+		destinationPath,
+		sourcePath
 	];
 
-	await execa(optipng, args);
-	const res = await compareSize(src, dest);
+	await execa(optipng, arguments_);
+	const result = await compareSize(sourcePath, destinationPath);
 
-	t.true(res[dest] < res[src]);
+	t.true(result[destinationPath] < result[sourcePath]);
 });