- Bumped CSSTree to
1.0.0-alpha.29
(fixes some issues)
- Added percent sign removal for zero percentages for some properties that is safe (@RubaXa, #286)
- Removed unit removal for zero values in
-ms-flex
due it breaks flex in IE10/11 (#362)
- Improved performance of selectors comparison (@smelukov, #343)
- Fixed merge of
position
declarations when sticky
fallback is using (@gruzzilkin, #356)
- Migrated to CSSTree
1.0.0-alpha25
- Changed AST format (see CSSTree change log for details)
- Fixed performance issue when generate CSS with source map (quadratic increase in time depending on the size of the CSS)
3.2.0 (September 10, 2017)
- Fixed named color compression to apply only when an identifier is guaranteed to be a color
- Added lifting of
@keyframes
to the beginning of style sheet (chunk), but after @charset
and @import
rules
- Added removal of
@keyframes
, @media
and @supports
with no prelude
- Added removal of duplicate
@keyframes
(#202)
- Added new option
forceMediaMerge
to force media rules merging. It's unsafe in general, but works fine in many cases. Use it on your own risk (#350)
- Bumped
CSSTree
to 1.0.0-alpha23
- Fixed crash on a number processing when it used not in a list (#335)
- Implemented optimisation for
none
keyword in border
and outline
properties (@zoobestik, #41)
- Implemented replacing
rgba(x, x, x, 0)
to transparent
- Fixed plus sign omitting for numbers following identifier, hex color, number or unicode range, since it can change the meaning of CSS (e.g.
calc(1px+2px)
has been optimized to calc(1px2px)
before, now it stays the same)
- Improved usage filtering for nested selectors (i.e. for
:nth-*()
, :has()
, :matches
and other pseudos)
- Implemented
blacklist
filtering in usage (#334, see Black list filtering)
- Improved white space removing, now white spaces are removing in the beginning and at the ending of sequences, and between stylesheet and block nodes
- Bumped
CSSTree
to 1.0.0-alpha19
- Fixed declaration merging when declaration contains an
!important
- Migrated to CSSTree as AST backend and exposed its API behind
syntax
property
- Extracted CLI into standalone package css/csso-cli
- Added
\0
IE hack support (#320)
- Added
beforeCompress
and afterCompress
options support (#316)
- Fixed crash on empty argument in function (#317)
- Fixed shorthand optimisation issue when value has a color value or something unknown (#311)
- Fixed
cursor
broken fallback (#306)
- Implement AST cloning by adding
clone()
function and clone
option for compress()
function (#296)
- Fix parse and translate attribute selector with flags but w/o operator (i.e.
[attrName i]
)
- Don't merge rules with flagged attribute selectors with others (#291)
- Take in account functions when merge TRBL-properties (#297, thanks to @ArturAralin)
- Improve partial merge (#304)
- Tweak scanner, reduce code deoptimizations and other small improvements
- Fix wrong declaration with
\9
hack merge (#295)
- New option
comments
to specify what comments to left: exclamation
, first-exclamation
and none
- Add
offset
to CSS parse error details
- Fix token
offset
computation
- No more
gonzales
AST format and related code
minify()
and minifyBlock()
is always return an object as result now (i.e. { css: String, map: SourceMapGenerator or null }
)
parse()
- Returns AST in new format (so called
internal
)
- Dynamic scanner implemented
- New AST format + dynamic scanner = performance boost and less memory consumption
- No more
context
argument, context should be specified via options
- Supported contexts now:
stylesheet
, atrule
, atruleExpression
, ruleset
, selector
, simpleSelector
, block
, declaration
and value
- Drop
needPositions
option, positions
option should be used instead
- Drop
needInfo
option, info
object is attaching to nodes when some information is requested by options
options
should be an object, otherwise it treats as empty object
compress()
- No more AST converting (performance boost and less memory consumption)
- Drop
outputAst
option
- Returns an object as result instead of AST (i.e.
{ ast: Object }
)
- Drop methods:
justDoIt()
, stringify()
, cleanInfo()
- Don't remove spaces after function/braces/urls since unsafe (#289)
- Usage data support:
- Filter rulesets by tag names, class names and ids white lists.
- More aggressive ruleset moving using class name scopes information.
- New CLI option
--usage
to pass usage data file.
- Improve initial ruleset merge
- Change order of ruleset processing, now it's left to right. Previously unmerged rulesets may prevent lookup and other rulesets merge.
- Difference in pseudo signature just prevents ruleset merging, but don't stop lookup.
- Simplify block comparison (performance).
- New method
csso.minifyBlock()
for css block compression (e.g. style
attribute content).
- Ruleset merge improvement: at-rules with block (like
@media
or @supports
) now can be skipped during ruleset merge lookup if doesn't contain something prevents it.
- FIX: Add negation (
:not()
) to pseudo signature to avoid unsafe merge (old browsers doesn't support it).
- FIX: Check nested parts of value when compute compatibility. It fixes unsafe property merging.
- pass block mode to tokenizer for correct parsing of declarations properties with
//
hack
- fix wrongly
@import
and @charset
removal on double exclamation comment
- support for CSS Custom Properties (#279)
- rework RTBL properties merge – better merge for values with special units and don't merge values with CSS-wide keywords (#255)
- remove redundant universal selectors (#178)
- take in account
!important
when check for property overriding (#280)
- don't merge
text-align
declarations with some values (#281)
- add spaces around
/deep/
combinator on translate, since it together with universal selector can produce a comment
- better keyword and property name resolving (tolerant to hacks and so on)
- integration improvements
- compression log function could be customized by
logger
option for compress()
and minify()
- make possible to set initial line and column for parser
1.6.3 (February 29, 2016)
- add
file
to generated source map since other tools can relay on it in source map transform chain
1.6.2 (February 29, 2016)
- tweak some parse error messages and their positions
- fix
:not()
parsing and selector groups in :not()
is supported now (#215)
needPosition
parser option is deprecated, positions
option should be used instead (needPosition
is used still if positions
option omitted)
- expose internal AST API as
csso.internal.*
minify()
adds sourcesContent
by default when source map is generated
- bring back support for node.js
0.10
until major release (#275)
1.6.1 (February 28, 2016)
- fix exception on zero length dimension compress outside declaration (#273)
1.6.0 (February 27, 2016)
- source maps support
- parser remake:
- various parsing issues fixed
- fix unicode sequence processing in ident (#191)
- support for flags in attribute selector (#270)
- position (line and column) of parse error (#109)
- 4x performance boost, less memory consumption
- compressor refactoring
- internal AST is using doubly linked lists (with safe transformation support during iteration) instead of arrays
- rename
restructuring
to restructure
option for minify()
/compress()
(restructuring
is alias for restructure
now, with lower priority)
- unquote urls when possible (#141, #60)
- setup code coverage and a number of related fixes
- add eslint to check unused things
- one more fix (in
restructRuleset
this time) with merge of rulesets when a ruleset with same specificity places between them (#264)
- disable partial merge of rulesets in
@keyframes
rulesets (until sure it's correct)
- don't override display values with different browser support (#259)
- fix publish issue (one of modules leak in development state)
- don't merge rulesets if between them a ruleset with same specificity (#264)
- ensure
-
is not used as an identifier in attribute selectors (thanks to @mathiasbynens)
- fix broken
justDoIt()
function
- various small fixes
- split code base into small modules and related refactoring
- introduce internal AST format for compressor (
gonzales
→internal
and internal
→gonzales
convertors, walkers, translator)
- various optimizations: no snapshots, using caches and indexes
- sort selectors, merge selectors in alphabet order
- compute selector's specificity
- better ruleset restructuring, improve compression of partially equal blocks
- better ruleset merge – not only closest but also disjoined by other rulesets when safe
- join
@media
with same query
outputAst
– new option to specify output AST format (gonzales
by default for backward compatibility)
- remove quotes surrounding attribute values in attribute selectors when possible (#73)
- replace
from
→0%
and 100%
→to
at @keyframes
(#205)
- prevent partial merge of rulesets at
@keyframes
(#80, #197)
- walker for
gonzales
AST was implemented
- new option
--stat
(output stat in stderr
)
- new optional parameter
level
for --debug
option
1.4.4 (December 10, 2015)
- prevent removal of spaces after braces that before identifier that breaking at-rules expressions (#258)
- fix unicode-range parsing that cause to wrong function detection (#250)
- allow spaces between
progid:
and rest part of value for IE's filter
property as autoprefixer
generates this kind of code (#249)
- fixes for Windows:
- correct processing new lines
- normalize file content in test suite
- fixes to work in strict mode (#252)
- init compressor dictionaries for every css block (#248, #251)
- bump uglify-js version
- allow merge for
display
property (#167, #244)
- more accurate
rect
(clip
property value) merge
- fix typo when specifying options in cli (thanks to @Taritsyn)
- fix safe unit values merge with keyword values (#244)
- fix wrong descendant combinator removal (#246)
- build browser version on
prepublish
(thanks to @silentroach)
- parser: store whitespaces as single token (performance and reduce memory consumption)
- rearrange compress tests layout
Bringing project back to life. Changed files structure, cleaned up and refactored most of sources.
- single code base (no more
src
folder)
- build browser version with
browserify
(no more make
, and web
folder), browser version is available at dist/csso-browser.js
- main file is
lib/index.js
now
- minimal
node.js
version is 0.12
now
- restrict file list to publish on npm (no more useless folders and files in package)
- add
jscs
to control code style
- automate
gh-pages
update
- util functions reworked
- translator reworked
- test suite reworked
- compressor refactored
- initial parser refactoring
- new method
minify(src, options)
, options:
restructuring
– if set to false
, disable structure optimisations (true
by default)
debug
- outputs intermediate state of CSS during compression (false
by default)
- deprecate
justDoIt()
method (use minify
instead)
- rename
treeToString()
method to stringify()
- drop
printTree()
method
- AST node info
column
and offset
added
ln
renamed to line
- fix line counting across multiple files and input with CR LF (#147)
- completely reworked, use clap to parse argv
- add support for input from stdin (#128)
- drop undocumented and obsoleted options
--rule
and --parser
(suppose nobody use it)
- drop
-off
alias for --restructure-off
as incorrect (only one letter options should starts with single -
)
- new option
--debug
that reflecting to options.debug
for minify
Parsing and optimizations
- keep all exclamation comments (#194)
- add
/deep/
combinator support (#209)
- attribute selector
- allow colon in attribute name (#237)
- support for namespaces (#233)
- color
- support all css/html colors
- convert
hsla
to rgba
and hls
to rgb
- convert
rgba
with 1 as alpha value to rgb
(#122)
- interpolate
rgb
and rgba
percentage values to absolute values
- replace percentage values in
rgba
for normalized/interpolated values
- lowercase hex colors and color names (#169)
- fix color minification when hex value replaced for color name (#176)
- fit rgb values to 0..255 range (#181)
- calc
- remove spaces for multiple operator in calc
- don't remove units inside calc (#222)
- fix wrong white space removal around
+
and -
(#228)
- don't remove units in
flex
property as it could change value meaning (#200)
- don't merge
\9
hack values (#231)
- merge property values only if they have the same functions (#150, #227)
- don't merge property values with some sort of units (#140, #161)
- fix
!important
issue for top-right-bottom-left
properties (#189)
- fix
top-right-bottom-left
properties merge (#139, #175)
- support for unicode-range (#148)
- don't crash on ruleset with no selector (#135)
- tolerant to class names that starts with digit (#99, #105)
- fix background compressing (#170)
- Case insensitive check for
!important
(#187)
- Fix problems with using
csso
as cli command on Windows (#83, #136, #142 and others)
- Remove byte order marker (the UTF-8 BOM) from input
- Don't strip space between funktion-funktion and funktion-vhash (#134)
- Don't merge TRBL values having \9 (hack for IE8 in bootstrap) (#159, #214, #230, #231 and others)
- Don't strip units off dimensions of non-length (#226, #229 and others)
1.3.7 (February 11, 2013)
1.3.6 (November 26, 2012)
- PeCode CSS parser replaced by Gonzales CSS parser