Sha256: a2bf80a2a9862c90382b657df02c9a25b122ecd0122194f68cc2a7d116ee9485
Contents?: true
Size: 1.85 KB
Versions: 23
Compression:
Stored size: 1.85 KB
Contents
'use strict';
const isStandardSyntaxRule = require('../../utils/isStandardSyntaxRule');
const parseSelector = require('../../utils/parseSelector');
const report = require('../../utils/report');
const resolvedNestedSelector = require('postcss-resolve-nested-selector');
const ruleMessages = require('../../utils/ruleMessages');
const validateOptions = require('../../utils/validateOptions');
const ruleName = 'selector-max-combinators';
const messages = ruleMessages(ruleName, {
expected: (selector, max) =>
`Expected "${selector}" to have no more than ${max} ${
max === 1 ? 'combinator' : 'combinators'
}`,
});
function rule(max) {
return (root, result) => {
const validOptions = validateOptions(result, ruleName, {
actual: max,
possible: [
function (max) {
return typeof max === 'number' && max >= 0;
},
],
});
if (!validOptions) {
return;
}
function checkSelector(selectorNode, ruleNode) {
const count = selectorNode.reduce((total, childNode) => {
// Only traverse inside actual selectors
if (childNode.type === 'selector') {
checkSelector(childNode, ruleNode);
}
return (total += childNode.type === 'combinator' ? 1 : 0);
}, 0);
if (selectorNode.type !== 'root' && selectorNode.type !== 'pseudo' && count > max) {
report({
ruleName,
result,
node: ruleNode,
message: messages.expected(selectorNode, max),
word: selectorNode,
});
}
}
root.walkRules((ruleNode) => {
if (!isStandardSyntaxRule(ruleNode)) {
return;
}
ruleNode.selectors.forEach((selector) => {
resolvedNestedSelector(selector, ruleNode).forEach((resolvedSelector) => {
parseSelector(resolvedSelector, result, ruleNode, (container) =>
checkSelector(container, ruleNode),
);
});
});
});
};
}
rule.ruleName = ruleName;
rule.messages = messages;
module.exports = rule;
Version data entries
23 entries across 23 versions & 1 rubygems