feat: Add minify options

Author: Randagio13

README.md

@@ -14,6 +14,7 @@
 
 1. [Getting started](#getting-started)
    - [Installation](#installation)
+   - [Options](#options)
 2. [Usage](#usage)
 3. [Contributors](#contributors)
 4. [Need help](#need-help)
@@ -36,6 +37,16 @@ npm install minimize-js -D
 yarn add minimize-js -D
 ```
 
+### Options
+
+Minimize JS contains all options by default.
+
+```bash
+ -w --minifyWhitespace     It only removes whitespace characters
+ -i --minifyIdentifiers    It only transforms the identifiers
+ -s --minifySyntax         It only transforms the syntax
+```
+
 ## Usage
 
 The code snippet below shows how to put into action `minimize-js` and lets you minimize your files inside a directory.

index.ts

@@ -7,14 +7,24 @@ const encoding = 'utf8'
 const program = new Command()
 
 async function getFiles(directory: string) {
+  const options = program.opts()
   if (directory) {
     const files = glob.sync(`${directory}/**`, {})
-    await minimization(files, { encoding })
+    await minimization(files, { encoding, ...options })
   }
 }
 
 async function run() {
   program.argument('<directory>', 'your files directory').action(getFiles)
+  program.option(
+    '-w, --minifyWhitespace',
+    'It only removes whitespace characters'
+  )
+  program.option(
+    '-i, --minifyIdentifiers',
+    'It only transforms the identifiers'
+  )
+  program.option('-s, --minifySyntax', 'It only transforms the syntax')
   await program.parseAsync()
 }
 

minimization.ts

@@ -4,10 +4,15 @@ const Bar = require('progress-barjs')
 
 type Opts = {
   encoding: 'utf8'
+  minifyWhitespace?: boolean
+  minifyIdentifiers?: boolean
+  minifySyntax?: boolean
 }
 
 export async function minimization(files: string[], opts: Opts) {
-  const { encoding = 'utf8' } = opts
+  const { encoding = 'utf8', ...transformOpts } = opts
+  const options =
+    Object.keys(transformOpts).length > 0 ? transformOpts : { minify: true }
   const filesFiltered = files.filter((f) => f.endsWith('.js'))
   const bar = Bar({
     label: 'Minimize JS',
@@ -19,9 +24,7 @@ export async function minimization(files: string[], opts: Opts) {
     const file = filesFiltered[i]
     if (file) {
       const content = readFileSync(file, { encoding })
-      const { code } = transformSync(content, {
-        minify: true,
-      })
+      const { code } = transformSync(content, options)
       if (code) {
         const c =
           code.search('##!/usr/bin/env') !== -1