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index.js
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index.js
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const { createPlugin } = require('stylelint')
const valueParser = require('postcss-value-parser')
const declarationValueIndex = require('stylelint/lib/utils/declarationValueIndex')
const getDeclarationValue = require('stylelint/lib/utils/getDeclarationValue')
const report = require('stylelint/lib/utils/report')
const ruleMessages = require('stylelint/lib/utils/ruleMessages')
const setDeclarationValue = require('stylelint/lib/utils/setDeclarationValue')
const validateOptions = require('stylelint/lib/utils/validateOptions')
const ruleName = 'stylistic/color-hex-case'
const messages = ruleMessages(ruleName, {
expected: (actual, expected) => `Expected "${actual}" to be "${expected}"`,
})
const meta = {
url: 'https://github.com/elirasza/stylelint-stylistic/tree/main/lib/rules/color-hex-case',
fixable: true,
}
const HEX = /^#[0-9A-Za-z]+/
const IGNORED_FUNCTIONS = new Set(['url'])
/** @type {import('stylelint').Rule} */
const rule = (primary, _secondaryOptions, context) => (root, result) => {
const validOptions = validateOptions(result, ruleName, {
actual: primary,
possible: ['lower', 'upper'],
})
if (!validOptions) {
return
}
root.walkDecls((decl) => {
const parsedValue = valueParser(getDeclarationValue(decl))
let needsFix = false
parsedValue.walk((node) => {
const { value } = node
if (isIgnoredFunction(node)) return false
if (!isHexColor(node)) return
const expected = primary === 'lower' ? value.toLowerCase() : value.toUpperCase()
if (value === expected) return
if (context.fix) {
node.value = expected
needsFix = true
return
}
report({
message: messages.expected(value, expected),
node: decl,
index: declarationValueIndex(decl) + node.sourceIndex,
result,
ruleName,
})
})
if (needsFix) {
setDeclarationValue(decl, parsedValue.toString())
}
})
}
/**
* @param {import('postcss-value-parser').Node} node
*/
function isIgnoredFunction({ type, value }) {
return type === 'function' && IGNORED_FUNCTIONS.has(value.toLowerCase())
}
/**
* @param {import('postcss-value-parser').Node} node
*/
function isHexColor({ type, value }) {
return type === 'word' && HEX.test(value)
}
rule.ruleName = ruleName
rule.messages = messages
rule.meta = meta
module.exports = { messages, meta, plugin: createPlugin(ruleName, rule), rule, ruleName }