NewYour coding agent can read the release notes before it upgrades.Set up the MCP server →
npm · #2015 most downloaded on npm
Convert values with PostCSS (e.g. ms -> s)
Last release today
17 Sep 2026
Release timing varies
gaps range from 8 days to 4 months
Most releases are documented
notes for 48 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
11 years old
93 releases · first in 2015
Nothing published for this version
Nothing published for this version
Improved performance of the core module functionOptimiser.
functionOptimiser.One column per quarter.
Adds a new optimisation which re-orders properties that accept values in an arbitrary order. This can lead to improved merging behaviour in certain ca
Adds support for disabling modules of the user's choosing, with new option names. The old options (such as merge & fonts) will be removed in 3.0.
merge & fonts) will be removed in 3.0.Nothing published for this version
postcss-minify-selectors was extended to add support for conversion of ::before to :before; this release removes the dedicated postcss-pseudoelements
::before to :before; this release removes the dedicated
postcss-pseudoelements module.Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Consolidated postcss-minify-trbl & two integrated modules into postcss-merge-longhand.
Nothing published for this version
Replaced integrated plugin filter with postcss-filter-plugins.
Allow postcss-font-family to be disabled.
postcss-font-family to be disabled.Add postcss-plugin keyword to package.json.
postcss-plugin keyword to package.json.Adds removal of outdated vendor prefixes based on browser support.
cssnano.process(css, opts) instead of cssnano(css, opts).Fixes crash on undefined decl.before from prior AST.
decl.before from prior AST.Added support for bundling cssnano using webpack (thanks to @MoOx).
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Fixed a bug where a CSS function keyword inside its value would throw an error.
Better support for merging properties without the existance of a shorthand override.
Nothing published for this version
Now can merge identifiers such as @keyframes and @counter-style if they have duplicated properties but are named differently.
@keyframes and @counter-style if they
have duplicated properties but are named differently.Nothing published for this version
Improve module loading logic (thanks to @tunnckoCore).
rem,
trailing zeroes and slash/comma separated values
(thanks to @TrySound & @tunnckoCore).-webkit-tap-highlight-color values were being
incorrectly transformed to transparent. This is not supported in Safari.Add repository/author links to package.json.
Nothing published for this version
Your coding agent can read these notes before it upgrades. Set up the MCP server →