index.js 3.9 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports["default"] = rule;
  6. exports.ruleName = exports.meta = exports.messages = void 0;
  7. var _stylelint = require("stylelint");
  8. var _utils = require("../../utils");
  9. var ruleName = (0, _utils.namespace)("selector-nest-combinators");
  10. exports.ruleName = ruleName;
  11. var messages = _stylelint.utils.ruleMessages(ruleName, {
  12. expectedInterpolation: "Expected interpolation to be in a nested form",
  13. expected: function expected(combinator, type) {
  14. return "Expected combinator \"".concat(combinator, "\" of type \"").concat(type, "\" to be in a nested form");
  15. },
  16. rejected: "Unexpected nesting found in selector"
  17. });
  18. exports.messages = messages;
  19. var meta = {
  20. url: (0, _utils.ruleUrl)(ruleName)
  21. };
  22. exports.meta = meta;
  23. function rule(expectation) {
  24. return function (root, result) {
  25. var validOptions = _stylelint.utils.validateOptions(result, ruleName, {
  26. actual: expectation,
  27. possible: ["always", "never"]
  28. });
  29. if (!validOptions) {
  30. return;
  31. }
  32. function precedesParentSelector(current) {
  33. do {
  34. current = current.next();
  35. if (current.type === "nesting") {
  36. return true;
  37. }
  38. } while (current.next());
  39. return false;
  40. }
  41. // attribute, class, combinator, comment, id, nesting, pseudo, root, selector, string, tag, or universal
  42. var chainingTypes = ["attribute", "class", "id", "pseudo", "tag", "universal"];
  43. var interpolationRe = /#{.+?}$/;
  44. root.walkRules(function (rule) {
  45. if (rule.parent && rule.parent.type === "atrule" && rule.parent.name === "keyframes") {
  46. return;
  47. }
  48. if (typeof rule.selector === "string") {
  49. var isNestedProperty = rule.selector.slice(-1) === ":";
  50. if (isNestedProperty) {
  51. return;
  52. }
  53. }
  54. (0, _utils.parseSelector)(rule.selector, result, rule, function (fullSelector) {
  55. var message;
  56. fullSelector.walk(function (node) {
  57. if (node.value === "}") {
  58. return;
  59. }
  60. if (expectation === "always") {
  61. if (node.type === "selector") {
  62. return;
  63. }
  64. if (node.parent && node.parent.type === "selector" && node.parent.parent && node.parent.parent.type === "pseudo") {
  65. return;
  66. }
  67. if (!node.prev()) {
  68. return;
  69. }
  70. if (node.next() && precedesParentSelector(node)) {
  71. return;
  72. }
  73. if (node.type === "combinator") {
  74. if (node.next() && !chainingTypes.includes(node.next().type)) {
  75. return;
  76. }
  77. if (!chainingTypes.includes(node.prev().type)) {
  78. return;
  79. }
  80. }
  81. if (chainingTypes.includes(node.type) && !chainingTypes.includes(node.prev().type)) {
  82. return;
  83. }
  84. if (node.type !== "combinator" && !chainingTypes.includes(node.type)) {
  85. return;
  86. }
  87. var hasInterpolation = interpolationRe.test(rule.selector);
  88. if (node.type !== "combinator" && hasInterpolation) {
  89. return;
  90. }
  91. if (hasInterpolation) {
  92. message = messages.expectedInterpolation;
  93. } else {
  94. message = messages.expected(node.value, node.type);
  95. }
  96. }
  97. if (expectation === "never") {
  98. if (rule.parent.type === "root" || rule.parent.type === "atrule") {
  99. return;
  100. }
  101. message = messages.rejected;
  102. }
  103. _stylelint.utils.report({
  104. ruleName: ruleName,
  105. result: result,
  106. node: rule,
  107. message: message,
  108. index: node.sourceIndex
  109. });
  110. });
  111. });
  112. });
  113. };
  114. }
  115. rule.ruleName = ruleName;
  116. rule.messages = messages;
  117. rule.meta = meta;