66 lines
1.5 KiB
JavaScript
66 lines
1.5 KiB
JavaScript
'use strict';
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const isStandardSyntaxSelector = require('../../utils/isStandardSyntaxSelector');
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const report = require('../../utils/report');
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const ruleMessages = require('../../utils/ruleMessages');
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const validateOptions = require('../../utils/validateOptions');
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const ruleName = 'keyframe-block-no-duplicate-selectors';
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const messages = ruleMessages(ruleName, {
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rejected: (selector) => `Unexpected duplicate "${selector}"`,
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});
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const meta = {
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url: 'https://stylelint.io/user-guide/rules/keyframe-block-no-duplicate-selectors',
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};
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/** @type {import('stylelint').Rule} */
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const rule = (primary) => {
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return (root, result) => {
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const validOptions = validateOptions(result, ruleName, { actual: primary });
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if (!validOptions) {
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return;
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}
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root.walkAtRules(/^(-(moz|webkit)-)?keyframes$/i, (atRuleKeyframes) => {
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const selectors = new Set();
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atRuleKeyframes.walkRules((keyframeRule) => {
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const ruleSelectors = keyframeRule.selectors;
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ruleSelectors.forEach((selector) => {
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if (!isStandardSyntaxSelector(selector)) {
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return;
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}
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const normalizedSelector = selector.toLowerCase();
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const isDuplicate = selectors.has(normalizedSelector);
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if (isDuplicate) {
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report({
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message: messages.rejected,
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messageArgs: [selector],
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node: keyframeRule,
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result,
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ruleName,
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word: selector,
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});
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return;
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}
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selectors.add(normalizedSelector);
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});
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});
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});
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};
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};
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rule.ruleName = ruleName;
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rule.messages = messages;
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rule.meta = meta;
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module.exports = rule;
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