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0.3 “Prince Seere”
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@ai ai released this 13 Feb 20:38
0.3
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ai Andrey Sitnik
GPG key ID: A9E09B941F710E4D
Learn about vigilant mode.
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Prince Seere seal

This release improve source map support, copy your code style in new nodes and add few API.

Source Map

If you generate map for your changes, output CSS will contains source map annotation comment:

a { }
/*# sourceMappingURL=to.css.map */

Now you can inline source map to annotation comment by data:uri. Use inlineMap option:

var result = porcessor.process(css, { inlineMap: true });
result.map //=> undefined, because map is in CSS
result.css //=> "a{}\n/*# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoibWFpbi5taW4uY3NzIiwic291cmNlcyI6WyJtYWluLmNzcyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSxJQUFLIn0= */"

PostCSS will autodetect previous source map if map is in annotation comment or in file near input CSS. You can disable autodetection by map: false option.

Source map now has special fixes to works on Windows and in subdirectories. Thanks to @nDmitry and @lydell, they did great investigation.

Code Style

New rule will copy style from parsed rules:

var root = postcss,parse(".empty {};\na {\n  color: black;\n  }");
var rule = postcss.rule({ selector: 'b' });
root.append(rule);

rule.toString(); //=> "b {}"
                 // copy style from empty rule

rule.append({ prop: 'top', value: '1px' });
rule.toString(); //=> "b {\n  top: 1px;\n  }"
                 // copy style from rule with declaration

Selector and at-rule params was cleaned from spaces and comments before {. AtRule and Rule nodes now has between property. Declaration also has between property with colon, spaces and comments between property name and value.

API Changes

  • Comments between rules and declarations now parsed to Comment node.
  • Container node now has first and last shortcut with first or last child.
  • Declaration value will not contains !important rule anymore. It will be parsed to separated important property.
  • You can now break any nodes iteration with return false.
  • New method eachInside() allow you to recursive iterate node of all types.
  • Rule now contains selectors shorcut property, which returns selectors in array.
  • In 0.3 process multiple input files will be easy by toResult() method in Root.
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