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40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
/* @flow */
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"use strict"
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/**
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* Check whether a type selector is standard
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*
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* @param {Node} postcss-selector-parser node (of type tag)
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* @return {boolean} If `true`, the type selector is standard
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*/
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const keywordSets = require("../reference/keywordSets")
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module.exports = function (node/*: Object*/)/*: boolean*/ {
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// postcss-selector-parser includes the arguments to nth-child() functions
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// as "tags", so we need to ignore them ourselves.
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// The fake-tag's "parent" is actually a selector node, whose parent
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// should be the :nth-child pseudo node.
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const _node$parent$parent = node.parent.parent
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const parentType = _node$parent$parent.type,
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parentValue = _node$parent$parent.value
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if (parentValue) {
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const normalisedParentName = parentValue.toLowerCase().replace(/:+/, "")
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if (parentType === "pseudo" && (keywordSets.aNPlusBNotationPseudoClasses.has(normalisedParentName) || keywordSets.linguisticPseudoClasses.has(normalisedParentName))) {
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return false
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}
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}
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// &-bar is a nesting selector combined with a suffix
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if (node.prev() && node.prev().type === "nesting") {
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return false
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}
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if (node.value[0] === "%") {
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return false
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}
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return true
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}
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