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- 'use strict';
- const report = require('../../utils/report');
- const ruleMessages = require('../../utils/ruleMessages');
- const validateOptions = require('../../utils/validateOptions');
- const { isNumber } = require('../../utils/validateTypes');
- const ruleName = 'selector-max-empty-lines';
- const messages = ruleMessages(ruleName, {
- expected: (max) => `Expected no more than ${max} empty ${max === 1 ? 'line' : 'lines'}`,
- });
- const meta = {
- url: 'https://stylelint.io/user-guide/rules/list/selector-max-empty-lines',
- };
- /** @type {import('stylelint').Rule} */
- const rule = (primary, _secondaryOptions, context) => {
- const maxAdjacentNewlines = primary + 1;
- return (root, result) => {
- const validOptions = validateOptions(result, ruleName, {
- actual: primary,
- possible: isNumber,
- });
- if (!validOptions) {
- return;
- }
- const violatedCRLFNewLinesRegex = new RegExp(`(?:\r\n){${maxAdjacentNewlines + 1},}`);
- const violatedLFNewLinesRegex = new RegExp(`\n{${maxAdjacentNewlines + 1},}`);
- const allowedLFNewLinesString = context.fix ? '\n'.repeat(maxAdjacentNewlines) : '';
- const allowedCRLFNewLinesString = context.fix ? '\r\n'.repeat(maxAdjacentNewlines) : '';
- root.walkRules((ruleNode) => {
- const selector = ruleNode.raws.selector ? ruleNode.raws.selector.raw : ruleNode.selector;
- if (context.fix) {
- const newSelectorString = selector
- .replace(new RegExp(violatedLFNewLinesRegex, 'gm'), allowedLFNewLinesString)
- .replace(new RegExp(violatedCRLFNewLinesRegex, 'gm'), allowedCRLFNewLinesString);
- if (ruleNode.raws.selector) {
- ruleNode.raws.selector.raw = newSelectorString;
- } else {
- ruleNode.selector = newSelectorString;
- }
- } else if (
- violatedLFNewLinesRegex.test(selector) ||
- violatedCRLFNewLinesRegex.test(selector)
- ) {
- report({
- message: messages.expected(primary),
- node: ruleNode,
- index: 0,
- result,
- ruleName,
- });
- }
- });
- };
- };
- rule.ruleName = ruleName;
- rule.messages = messages;
- rule.meta = meta;
- module.exports = rule;
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