34 lines
843 B
JavaScript
34 lines
843 B
JavaScript
'use strict';
|
|
|
|
/**
|
|
* Check whether a combinator is standard
|
|
*
|
|
* @param {import('postcss-selector-parser').Combinator} node postcss-selector-parser node (of type combinator)
|
|
* @return {boolean} If `true`, the combinator is standard
|
|
*/
|
|
module.exports = function isStandardSyntaxCombinator(node) {
|
|
// if it's not a combinator, then it's not a standard combinator
|
|
if (node.type !== 'combinator') {
|
|
return false;
|
|
}
|
|
|
|
// Ignore reference combinators like `/deep/`
|
|
if (node.value.startsWith('/') || node.value.endsWith('/')) {
|
|
return false;
|
|
}
|
|
|
|
// ignore the combinators that are the first or last node in their container
|
|
if (node.parent !== undefined && node.parent !== null) {
|
|
const parent = node.parent;
|
|
|
|
if (node === parent.first) {
|
|
return false;
|
|
}
|
|
|
|
if (node === parent.last) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
};
|