84 lines
1.7 KiB
JavaScript
84 lines
1.7 KiB
JavaScript
'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');
|
|
|
|
for (const name of ['js', 'html', 'css', 'img']) {
|
|
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;
|
|
}
|
|
|