js-min

A community fork of the jsmin JavaScript minifier.

• GitHub: https://github.com/QQSHI13/js-min
• PyPI package: min-js
• Python module: js_min

Install

pip install min-js

Usage

from js_min import jsmin

with open('myfile.js') as js_file:
    minified = jsmin(js_file.read())

Command line:

python -m js_min myfile.js

Note: js-min makes no attempt to be compatible with ECMAScript 6 / ES.next / Harmony.

If you are minifying ES6 code, you can use the quote_chars parameter:

from js_min import jsmin

with open('myfile.js') as js_file:
    minified = jsmin(js_file.read(), quote_chars="'\"`")

Where to get it

• Install from PyPI: https://pypi.org/project/min-js/
• Latest release branch on GitHub: https://github.com/QQSHI13/js-min/tree/latest-release/js_min
• Development version on GitHub: https://github.com/QQSHI13/js-min/

Python 2 support removed

Python 2 support was removed in version 3.0.0. If you need to support Python 2, please use jsmin version 2.2.2 with setuptools<58.

Contributing

Issues and Pull requests are welcome.

The upstream project used to be hosted on Bitbucket and old issues can still be found there.

If possible, please make separate pull requests for tests and for code: tests will be added to the latest-release branch while code will go to main.

Unless you request otherwise, your GitHub identity will be added to the contributor list below.

Contributors

Historical contributors (chronological commit order):

• Dave St.Germain — original author
• Hans weltar
• Tikitu de Jager — upstream maintainer
• https://bitbucket.org/rennat
• Nick Alexander
• Gennady Kovshenin
• Matt Molyneaux
• Albert Wang
• Ben Bradshaw

Users

If your project uses js-min, feel free to open a PR adding it to this list.

• Your project here

Changelog

v3.0.0 (2021-09-08) Ben Bradshaw

• Breaking Change: Removed support for Python 2

• Removed usage of use_2to3 in setup.py

v2.2.2 (2017-05-01) Tikitu de Jager

• Add license headers to code files (fixes i#17)

• Remove mercurial files (fixes #20)

v2.2.1 (2016-03-06) Tikitu de Jager

• Fix #14: Infinite loop on return x / 1;

v2.2.0 (2015-12-19) Tikitu de Jager

• Merge #13: Preserve "loud comments" starting with /*!

  These are commonly used for copyright notices, and are preserved by various other minifiers (e.g. YUI Compressor).

v2.1.6 (2015-10-14) Tikitu de Jager

• Fix #12: Newline following a regex literal should not be elided.

v2.1.5 (2015-10-11) Tikitu de Jager

• Fix #9: Premature end of statement caused by multi-line comment not adding newline.

• Fix #10: Removing multiline comment separating tokens must leave a space.

• Refactor comment handling for maintainability.

v2.1.4 (2015-08-23) Tikitu de Jager

• Fix #6: regex literal matching comment was not correctly matched.

• Refactor regex literal handling for robustness.

v2.1.3 (2015-08-09) Tikitu de Jager

• Reset issue numbering: issues live in github from now on.

• Fix #1: regex literal was not recognised when occurring directly after {.

v2.1.2 (2015-07-12) Tikitu de Jager

• Issue numbers here and below refer to the bitbucket repository.

• Fix #17: bug when JS starts with comment then literal regex.

v2.1.1 (2015-02-14) Tikitu de Jager

• Fix #16: bug returning a literal regex containing escaped forward-slashes.

v2.1.0 (2014-12-24) Tikitu de Jager

• First changelog entries; see README.rst for prior contributors.

• Expose quote_chars parameter to provide just enough unofficial Harmony support to be useful.