A fast Javascript minifier that removes unnecessary whitespace and comments

Related tags

Asset Management js-minify
Overview

js-minify

A fast Javascript minifier that removes unnecessary whitespace and comments

Installation

If you are using Composer, use

composer require garfix/js-minify

Use

The simplest use of the library comes down to this:

$minifiedJs = \Garfix\JsMinify\Minifier::minify($js);

Where $js contains the unprocessed code and $minifiedJs holds the minified version.

If you want to change the default options, use minify($js, $options), where $options is an array of one or more of the following:

  • \Garfix\JsMinify\Minifier::FLAGGED_COMMENTS (bool, default: true) When set to false, /*! ... */ flagged comments are removed as well.

Background

I started this library because I believed JShrink could be made much faster by the use of dedicated regular expressions. This turned out to be true. It is about 10x faster on PHP 7 and 5x faster on PHP 8.

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Comments
  • Possibly add a `mangle` option?

    Possibly add a `mangle` option?

    This task might be a decent amount of work but maybe not. The UglifyJS node module has a mangle option that changes variable names and stuff like that so that they are shorter (thus saving precious bytes of space and bandwidth).

    So for example:

    (function () {
  var hi = 'Hello World'

  function hello () {
    console.log(hi)
  }

  hello()
})()

    Becomes:

    !function(){var o="Hello World";console.log(o)}();

    With the mangle option set to true.

    opened by kodie 2
  • Newlines are still being preserved after the end of a function

    Newlines are still being preserved after the end of a function

    This was also an issue with JShrink: https://github.com/tedious/JShrink/issues/87 and is actually how I came across your issue related to that here: https://github.com/tedious/JShrink/issues/105

    But I'm still seeing this issue with js-minify.

    For example:

    function hello () {
  console.log('Hello World')
}

console.log('yay')

    Should become:

    function hello(){console.log('Hello World')}console.log('yay')

    But currently it becomes:

    function hello(){console.log('Hello World')}
console.log('yay')
    opened by kodie 3
  • Add missing semicolons so that unnecessary newlines can be removed

    Add missing semicolons so that unnecessary newlines can be removed

    I found this package through JShrink and love the changes you've made. One small issue I've found is that if a line doesn't end with a semicolon, the newline is preserved, which is what you'd usually want, however, I typically write JavaScript using the Standard Style which doesn't use unnecessary semicolons, which works fine when you're adding a newline, but when minifying you'd want those semicolons added in so that the newline can be removed.

    So for example:

    var hi = 'Hola'

function hello () {
  console.log('Hello World')
}

    Should become:

    var hi='Hola';function hello(){console.log('Hello World')}

    But currently, it becomes:

    var hi='Hola'
function hello(){console.log('Hello World')}

    The goal should be to have the entire JavaScript put onto one line.

    The UglifyJS node module does this, it would be nice if js-minify did too. I might look into the uglify source and see how they do it and submit a pull request when I have time.

    Thank you!

    opened by kodie 2
Releases(1.0.0)
Owner
Patrick van Bergen
Patrick van Bergen
GitHub
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