WIP - add extractor, generate snippet_data

node_modules/mozjpeg/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/mozjpeg-bin/v${pkg.version}/vendor/`;
+
+module.exports = new BinWrapper()
+	.src(`${url}macos/cjpeg`, 'darwin')
+	.src(`${url}linux/cjpeg`, 'linux')
+	.src(`${url}win/cjpeg.exe`, 'win32')
+	.dest(path.join(__dirname, '../vendor'))
+	.use(process.platform === 'win32' ? 'cjpeg.exe' : 'cjpeg');

node_modules/mozjpeg/lib/install.js

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+'use strict';
+const os = require('os');
+const binBuild = require('bin-build');
+const log = require('logalot');
+const bin = require('.');
+
+const cpuNum = os.cpus().length;
+
+bin.run(['-version']).then(() => {
+	log.success('mozjpeg pre-build test passed successfully');
+}).catch(error => {
+	log.warn(error.message);
+	log.warn('mozjpeg pre-build test failed');
+	log.info('compiling from source');
+
+	let cfgExtras = '';
+	if (process.platform === 'darwin') {
+		cfgExtras = 'libpng_LIBS=\'/usr/local/lib/libpng16.a -lz\' --enable-static';
+	}
+
+	const cfg = [
+		`./configure --enable-static --disable-shared --disable-dependency-tracking --with-jpeg8 ${cfgExtras}`,
+		`--prefix="${bin.dest()}" --bindir="${bin.dest()}" --libdir="${bin.dest()}"`
+	].join(' ');
+
+	binBuild.url('https://github.com/mozilla/mozjpeg/releases/download/v3.2/mozjpeg-3.2-release-source.tar.gz', [
+		'autoreconf -fiv',
+		cfg,
+		`make -j${cpuNum}`,
+		`make install -j${cpuNum}`
+	]).then(() => {
+		log.success('mozjpeg built successfully');
+	}).catch(error => {
+		log.error(error.stack);
+	});
+});