CHANGELOG.md 17.6 KB

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4.2.0 (November 26, 2020)


Trim Custom Property values when possible (#393)
Fixed removing unit for zero-length dimentions in min(), max() and clamp() functions (#426)
Fixed crash on bad value in TRBL declaration value (#412)


4.1.1 (November 15, 2020)


Fixed build setup to exclude full mdn/data that reduced the lib size:


dist/csso.js: 794.5Kb -> 255.2Kb
dist/csso.min.js: 394.4Kb -> 194.2Kb
package size: 237.8 kB -> 156.1 kB
package unpacked size: 1.3 MB -> 586.8 kB


4.1.0 (October 27, 2020)


Bumped CSSTree to ^1.0.0

Fixed wrongly merging of TRBL values when one of them contains var() (#420)
Fixed wrongly merging of pseudo class and element with the same name, e.g. :-ms-input-placeholder and ::-ms-input-placeholder (#383, #416)
Fixed wrongly merging of overflow fallback (#415)


4.0.3 (March 24, 2020)


Prevented percent sign removal in flex/-ms-flex (#410)
Fixed restructuring optimisation in some cases (@charlessuh & @chsuh, #358, #411)
Bumped dependencies (@AviVahl, #409)


4.0.2 (October 28, 2019)


Fixed clean stage to avoid exceptions when source has unparsed or bad parts (#380)
Fixed wrong percentage sign removal for zero values (#395)


4.0.1 (October 22, 2019)


Bumped CSSTree to 1.0.0-alpha.37 to avoid source map generation inconsistency across Node.js versions


4.0.0 (October 21, 2019)


Dropped support for Node.js < 8
Refreshed dev dependencies and scripts
Bumped CSSTree to 1.0.0-alpha.36 (#399)
Changed bundle files: dist/csso.js and dist/csso.min.js instead single dist/csso-browser.js (min version)
Expose compress() as syntax.compress()


3.5.1 (June 7, 2018)


Bumped CSSTree to 1.0.0-alpha.29 (fixes some issues)


3.5.0 (January 14, 2018)


Migrated to CSSTree 1.0.0-alpha.27


3.4.0 (November 3, 2017)


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)


3.3.1 (October 17, 2017)


Fixed merge of position declarations when sticky fallback is using (@gruzzilkin, #356)


3.3.0 (October 12, 2017)


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


3.1.1 (April 25, 2017)


Fixed crash on a number processing when it used not in a list (#335)


3.1.0 (April 24, 2017)


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


3.0.1 (March 14, 2017)


Fixed declaration merging when declaration contains an !important


3.0.0 (March 13, 2017)


Migrated to CSSTree as AST backend and exposed its API behind syntax property
Extracted CLI into standalone package css/csso-cli


2.3.1 (January 6, 2017)


Added \0 IE hack support (#320)


2.3.0 (October 25, 2016)


Added beforeCompress and afterCompress options support (#316)
Fixed crash on empty argument in function (#317)


2.2.1 (July 25, 2016)


Fixed shorthand optimisation issue when value has a color value or something unknown (#311)
Fixed cursor broken fallback (#306)


2.2.0 (June 23, 2016)


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


2.1.1 (May 11, 2016)


Fix wrong declaration with \9 hack merge (#295)


2.1.0 (May 8, 2016)


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


2.0.0 (April 5, 2016)


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()


1.8.1 (March 30, 2016)


Don't remove spaces after function/braces/urls since unsafe (#289)


1.8.0 (March 24, 2016)


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.


1.7.1 (March 16, 2016)


pass block mode to tokenizer for correct parsing of declarations properties with // hack
fix wrongly @import and @charset removal on double exclamation comment


1.7.0 (March 10, 2016)


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


1.6.4 (March 1, 2016)


npm publish issue (#276)


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


1.5.4 (January 27, 2016)


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)


1.5.3 (January 25, 2016)


don't override display values with different browser support (#259)
fix publish issue (one of modules leak in development state)


1.5.2 (January 24, 2016)


don't merge rulesets if between them a ruleset with same specificity (#264)


1.5.1 (January 14, 2016)


ensure - is not used as an identifier in attribute selectors (thanks to @mathiasbynens)
fix broken justDoIt() function
various small fixes


1.5.0 (January 14, 2016)


Parser


attach minus to number


Compressor


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)


API


walker for gonzales AST was implemented


CLI


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)


1.4.3 (December 4, 2015)


fix unicode-range parsing that cause to wrong function detection (#250)


1.4.2 (November 9, 2015)


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


1.4.1 (October 20, 2015)


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


1.4 (October 16, 2015)

Bringing project back to life. Changed files structure, cleaned up and refactored most of sources.


Common


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


API


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)


CLI


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)


1.3.12 (October 8, 2015)


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)


Gonzales 1.0.7.


1.3.6 (November 26, 2012)


Gonzales 1.0.6.


1.3.5 (October 28, 2012)


Gonzales 1.0.5.
Protecting copyright notices in CSS: https://github.com/css/csso/issues/92

Zero CSS throws an error: https://github.com/css/csso/issues/96

Don't minify the second 0s in Firefox for animations: https://github.com/css/csso/issues/100

Japan manual
BEM ready documentation


1.3.4 (October 10, 2012)


@page inside @media Causes Error: https://github.com/css/csso/issues/90


1.3.3 (October 9, 2012)


CSSO 1.3.2 compresses ".t-1" and ".t-01" as identical classes: https://github.com/css/csso/issues/88


1.3.2 (October 8, 2012)


filter + important breaks CSSO v1.3.1: https://github.com/css/csso/issues/87


1.3.1 (October 8, 2012)


"filter" IE property breaks CSSO v1.3.0: https://github.com/css/csso/issues/86


1.3.0 (October 4, 2012)


PeCode CSS parser replaced by Gonzales CSS parser