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Error : TypeError: Cannot read property 'isEmpty' of undefined
See original GitHub issueI have a file containing a CSS portion that contains an error :
.k-carousel-slide img{min-width:0px;display:block;}}.container{width:1258px;margin:0 auto;}
You cann see the two } that crashes csso.
In this case, csso will completely fails even if it uses csstree (that is tolerant to this error).
Stack trace :
TypeError: Cannot read property 'isEmpty' of undefined
at Object.cleanRuleset (csso/lib/clean/Rule.js:85:30)
at Object.walk.leave (csso/lib/clean/index.js:16:37)
at walkNode (csso/node_modules/css-tree/lib/walker/create.js:161:19)
at List.each (csso/node_modules/css-tree/lib/utils/list.js:159:12)
at Object.eval [as StyleSheet] (eval at createTypeIterator (csso/node_modules/css-tree/lib/walker/create.js:112:12), <anonymous>:5:15)
at walkNode (csso/node_modules/css-tree/lib/walker/create.js:158:37)
at walk (csso/node_modules/css-tree/lib/walker/create.js:214:9)
at module.exports (csso/lib/clean/index.js:13:5)
at compressChunk (csso/lib/compress.js:69:5)
at compress (csso/lib/compress.js:154:9)
I think that the issue is related to the fact that the type Raw is not handled by csso.
Node that crashes csso :
{ type: 'Rule',
loc: null,
prelude: { type: 'Raw', loc: null, value: '}.container' },
block:
{ type: 'Block',
loc: null,
children:
{ cursor: null,
head:
{ prev: null,
next:
{ prev: [Circular],
next: null,
data:
{ type: 'Declaration',
loc: null,
important: false,
property: 'margin',
value:
{ type: 'Value',
loc: null,
children:
{ cursor: null,
head:
{ prev: null,
next:
{ prev: [Circular],
next:
{ prev: [Circular],
next: null,
data: { type: 'Identifier', loc: null, name: 'auto' } },
data: { type: 'WhiteSpace', loc: null, value: ' ' } },
data: { type: 'Number', loc: null, value: '0' } },
tail:
{ prev:
{ prev:
{ prev: null,
next: [Circular],
data: { type: 'Number', loc: null, value: '0' } },
next: [Circular],
data: { type: 'WhiteSpace', loc: null, value: ' ' } },
next: null,
data: { type: 'Identifier', loc: null, name: 'auto' } } } } } },
data:
{ type: 'Declaration',
loc: null,
important: false,
property: 'width',
value:
{ type: 'Value',
loc: null,
children:
{ cursor: null,
head:
{ prev: null,
next: null,
data: { type: 'Dimension', loc: null, value: '1258', unit: 'px' } },
tail:
{ prev: null,
next: null,
data: { type: 'Dimension', loc: null, value: '1258', unit: 'px' } } } } } },
tail:
{ prev:
{ prev: null,
next: [Circular],
data:
{ type: 'Declaration',
loc: null,
important: false,
property: 'width',
value:
{ type: 'Value',
loc: null,
children:
{ cursor: null,
head:
{ prev: null,
next: null,
data: { type: 'Dimension', loc: null, value: '1258', unit: 'px' } },
tail:
{ prev: null,
next: null,
data: { type: 'Dimension', loc: null, value: '1258', unit: 'px' } } } } } },
next: null,
data:
{ type: 'Declaration',
loc: null,
important: false,
property: 'margin',
value:
{ type: 'Value',
loc: null,
children:
{ cursor: null,
head:
{ prev: null,
next:
{ prev: [Circular],
next:
{ prev: [Circular],
next: null,
data: { type: 'Identifier', loc: null, name: 'auto' } },
data: { type: 'WhiteSpace', loc: null, value: ' ' } },
data: { type: 'Number', loc: null, value: '0' } },
tail:
{ prev:
{ prev:
{ prev: null,
next: [Circular],
data: { type: 'Number', loc: null, value: '0' } },
next: [Circular],
data: { type: 'WhiteSpace', loc: null, value: ' ' } },
next: null,
data: { type: 'Identifier', loc: null, name: 'auto' } } } } } } } } }
Issue Analytics
- State:
- Created 6 years ago
- Reactions:14
- Comments:9 (1 by maintainers)
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@abarre Fixed in 4.0.2. Notice that
.container{ ... }block is removing since unpaired}breaks selector @horgh Your case is also fixed. Notice that both rules will be removed since selectors are invalid. @hansott CSSO is not crash in your case now. However, at-rule will be removed, because(min-width: 0 \0)is invalid. To fix that change it to(min-width: 0\0)(remove a whitespace before\0) – in this case hack will still work and at-rule will not be removed.Any update on this? This is still a current bug.