add build

node_modules/minify/lib/minify.js

@@ -0,0 +1,84 @@
+'use strict';
+
+const DIR = __dirname + '/';
+
+const fs = require('fs');
+const path = require('path');
+const {
+    promisify,
+} = require('util');
+
+const tryToCatch = require('try-to-catch');
+const readFile = promisify(fs.readFile);
+
+const log = require('debug')('minify');
+
+['js', 'html', 'css', 'img'].forEach((name) => {
+    minify[name] = require(DIR + name);
+});
+
+module.exports = minify;
+
+function check(name) {
+    if (!name)
+        throw Error('name could not be empty!');
+}
+
+async function minify(name) {
+    const EXT = ['js', 'html', 'css'];
+    
+    check(name);
+    
+    const ext = path.extname(name).slice(1);
+    const is = ~EXT.indexOf(ext);
+    
+    if (!is)
+        throw Error(`File type "${ext}" not supported.`);
+    
+    log('optimizing ' + path.basename(name));
+    return optimize(name);
+}
+
+function getName(file) {
+    const notObj = typeof file !== 'object';
+    
+    if (notObj)
+        return file;
+    
+    return Object.keys(file)[0];
+}
+
+/**
+ * function minificate js,css and html files
+ *
+ * @param files     -   js, css or html file path
+ */
+async function optimize(file) {
+    check(file);
+    
+    const name = getName(file);
+    
+    log('reading file ' + path.basename(name));
+    
+    const data = await readFile(name, 'utf8');
+    return onDataRead(file, data);
+}
+
+/**
+* Processing of files
+* @param fileData {name, data}
+*/
+async function onDataRead(filename, data) {
+    log('file ' + path.basename(filename) + ' read');
+    
+    const ext = path.extname(filename).replace(/^\./, '');
+    
+    const optimizedData = await minify[ext](data);
+    
+    let b64Optimize;
+    if (ext === 'css')
+        [, b64Optimize] = await tryToCatch(minify.img, filename, optimizedData);
+    
+    return b64Optimize || optimizedData;
+}
+