67 lines
1.5 KiB
JavaScript
67 lines
1.5 KiB
JavaScript
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'use strict';
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const _ = require('lodash');
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const isCustomPropertySet = require('../utils/isCustomPropertySet');
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const isStandardSyntaxSelector = require('../utils/isStandardSyntaxSelector');
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/**
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* Check whether a Node is a standard rule
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*
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* @param {import('postcss').Rule} rule
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* @returns {boolean}
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*/
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module.exports = function(rule) {
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// Get full selector
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const selector = _.get(rule, 'raws.selector.raw', rule.selector);
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if (!isStandardSyntaxSelector(rule.selector)) {
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return false;
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}
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// Custom property set (e.g. --custom-property-set: {})
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if (isCustomPropertySet(rule)) {
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return false;
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}
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// Called Less mixin (e.g. a { .mixin() })
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// @ts-ignore TODO TYPES support LESS and SASS types somehow
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if (rule.mixin) {
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return false;
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}
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// Less detached rulesets
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if (selector.startsWith('@') && selector.endsWith(':')) {
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return false;
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}
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// Ignore Less &:extend rule
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// @ts-ignore TODO TYPES support LESS and SASS types somehow
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if (rule.extend) {
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return false;
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}
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// Ignore mixin or &:extend rule
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// https://github.com/shellscape/postcss-less/blob/master/lib/less-parser.js#L52
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// @ts-ignore TODO TYPES support LESS and SASS types somehow
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if (rule.params && rule.params[0]) {
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return false;
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}
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// Non-outputting Less mixin definition (e.g. .mixin() {})
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if (selector.endsWith(')') && !selector.includes(':')) {
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return false;
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}
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// Less guards
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if (/when\s+(not\s+)*\(/.test(selector)) {
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return false;
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}
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// Ignore Scss nested properties
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if (selector.endsWith(':')) {
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return false;
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}
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return true;
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};
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