index.js 2.0 KB

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  1. 'use strict';
  2. const report = require('../../utils/report');
  3. const ruleMessages = require('../../utils/ruleMessages');
  4. const validateOptions = require('../../utils/validateOptions');
  5. const { isNumber } = require('../../utils/validateTypes');
  6. const ruleName = 'selector-max-empty-lines';
  7. const messages = ruleMessages(ruleName, {
  8. expected: (max) => `Expected no more than ${max} empty ${max === 1 ? 'line' : 'lines'}`,
  9. });
  10. const meta = {
  11. url: 'https://stylelint.io/user-guide/rules/list/selector-max-empty-lines',
  12. fixable: true,
  13. };
  14. /** @type {import('stylelint').Rule} */
  15. const rule = (primary, _secondaryOptions, context) => {
  16. const maxAdjacentNewlines = primary + 1;
  17. return (root, result) => {
  18. const validOptions = validateOptions(result, ruleName, {
  19. actual: primary,
  20. possible: isNumber,
  21. });
  22. if (!validOptions) {
  23. return;
  24. }
  25. const violatedCRLFNewLinesRegex = new RegExp(`(?:\r\n){${maxAdjacentNewlines + 1},}`);
  26. const violatedLFNewLinesRegex = new RegExp(`\n{${maxAdjacentNewlines + 1},}`);
  27. const allowedLFNewLinesString = context.fix ? '\n'.repeat(maxAdjacentNewlines) : '';
  28. const allowedCRLFNewLinesString = context.fix ? '\r\n'.repeat(maxAdjacentNewlines) : '';
  29. root.walkRules((ruleNode) => {
  30. const selector = ruleNode.raws.selector ? ruleNode.raws.selector.raw : ruleNode.selector;
  31. if (context.fix) {
  32. const newSelectorString = selector
  33. .replace(new RegExp(violatedLFNewLinesRegex, 'gm'), allowedLFNewLinesString)
  34. .replace(new RegExp(violatedCRLFNewLinesRegex, 'gm'), allowedCRLFNewLinesString);
  35. if (ruleNode.raws.selector) {
  36. ruleNode.raws.selector.raw = newSelectorString;
  37. } else {
  38. ruleNode.selector = newSelectorString;
  39. }
  40. } else if (
  41. violatedLFNewLinesRegex.test(selector) ||
  42. violatedCRLFNewLinesRegex.test(selector)
  43. ) {
  44. report({
  45. message: messages.expected(primary),
  46. node: ruleNode,
  47. index: 0,
  48. result,
  49. ruleName,
  50. });
  51. }
  52. });
  53. };
  54. };
  55. rule.ruleName = ruleName;
  56. rule.messages = messages;
  57. rule.meta = meta;
  58. module.exports = rule;