!compress.js

const fs = require('fs')
const minjs = require('uglify-es')

const uglifyOption = {
    'mangle': true,
    'compress': {
        'sequences': true,
        'properties': true,
        'dead_code': true,
        'drop_debugger': true,
        'unsafe': false,
        'unsafe_comps': false,
        'conditionals': true,
        'comparisons': true,
        'evaluate': true,
        'booleans': true,
        'loops': true,
        'unused': true,
        'hoist_funs': true,
        'keep_fargs': true,
        'keep_fnames': false,
        'hoist_vars': false,
        'if_return': true,
        'join_vars': true,
        'collapse_vars': false,
        'reduce_vars': false,
        // 'cascade': true,
        'side_effects': true,
        'pure_getters': false,
        'pure_funcs': null,
        'negate_iife': false,
        'drop_console': false,
        'passes': 1,
        'global_defs': {}
    },
    'output': {
        'ascii_only': false,
        'inline_script': false,
        'max_line_len': 32000,
        'bracketize': false,
        'semicolons': true,
        'comments': /@.*|==\/?UserScript==/,
        'shebang': true,
        'preamble': null,
        'quote_style': 0
    }
}

global.process.argv.slice(2).forEach((name) => {
    console.log(`process: ${name} ...`)
    if (fs.existsSync(name + '.js')) {
        const m = minjs.minify(fs.readFileSync(name + '.js', 'utf8'), uglifyOption)
        fs.writeFileSync(`build/${name}.min.js`, m.code, 'utf8')
    }
})