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# selector-no-id
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Disallow id selectors.
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```css
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#foo {}
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/** ↑
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* This type of selector */
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```
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## Options
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### `true`
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The following patterns are considered warnings:
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```css
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#foo {}
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```
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```css
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.bar > #foo {}
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```
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```css
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#foo.bar {}
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```
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The following patterns are *not* considered warnings:
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```css
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a {}
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```
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```css
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.foo {}
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```
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```css
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[foo] {}
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```
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+57
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"use strict"
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const isKeyframeRule = require("../../utils/isKeyframeRule")
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const isStandardSyntaxRule = require("../../utils/isStandardSyntaxRule")
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const isStandardSyntaxSelector = require("../../utils/isStandardSyntaxSelector")
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const parseSelector = require("../../utils/parseSelector")
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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 = "selector-no-id"
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const messages = ruleMessages(ruleName, {
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rejected: "Unexpected id selector",
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})
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const rule = function (actual) {
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return (root, result) => {
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const validOptions = validateOptions(result, ruleName, { actual })
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if (!validOptions) {
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return
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}
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root.walkRules(rule => {
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if (!isStandardSyntaxRule(rule)) {
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return
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}
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if (isKeyframeRule(rule)) {
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return
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}
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const selector = rule.selector
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if (!isStandardSyntaxSelector(selector)) {
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return
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}
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parseSelector(selector, result, rule, selectorAST => {
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selectorAST.walkIds(idNode => {
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if (idNode.parent.parent.type === "pseudo") {
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return
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}
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report({
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message: messages.rejected,
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node: rule,
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index: idNode.sourceIndex,
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ruleName,
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result,
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})
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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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module.exports = rule
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