first commit

build/node_modules/pngcrush-bin/lib/index.js

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+'use strict';
+const path = require('path');
+const BinWrapper = require('bin-wrapper');
+const pkg = require('../package.json');
+
+const url = `https://raw.githubusercontent.com/imagemin/pngcrush-bin/v${pkg.version}/vendor/`;
+
+module.exports = new BinWrapper()
+	.src(`${url}osx/pngcrush`, 'darwin')
+	.src(`${url}linux/pngcrush`, 'linux')
+	.src(`${url}win/x64/pngcrush.exe`, 'win32', 'x64')
+	.src(`${url}win/x86/pngcrush.exe`, 'win32', 'x86')
+	.dest(path.resolve(__dirname, '../vendor'))
+	.use(process.platform === 'win32' ? 'pngcrush.exe' : 'pngcrush');

build/node_modules/pngcrush-bin/lib/install.js

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+'use strict';
+const BinBuild = require('bin-build');
+const log = require('logalot');
+const bin = require('.');
+
+bin.run(['-version'], err => {
+	if (err) {
+		log.warn(err.message);
+		log.warn('pngcrush pre-build test failed');
+		log.info('compiling from source');
+
+		const builder = new BinBuild()
+			.src('https://downloads.sourceforge.net/project/pmt/pngcrush/1.8.13/pngcrush-1.8.13.zip')
+			.cmd(`mkdir -p ${bin.dest()}`)
+			.cmd(`make && mv ${bin.use()} ${bin.path()}`);
+
+		return builder.run(err => {
+			if (err) {
+				log.error(err.stack);
+				return;
+			}
+
+			log.success('pngcrush built successfully');
+		});
+	}
+
+	log.success('pngcrush pre-build test passed successfully');
+});