| 'use strict'; |
| |
| const eachDeclarationBlock = require('../../utils/eachDeclarationBlock'); |
| const isCustomProperty = require('../../utils/isCustomProperty'); |
| const isStandardSyntaxProperty = require('../../utils/isStandardSyntaxProperty'); |
| const optionsMatches = require('../../utils/optionsMatches'); |
| const report = require('../../utils/report'); |
| const ruleMessages = require('../../utils/ruleMessages'); |
| const validateOptions = require('../../utils/validateOptions'); |
| const { isString } = require('../../utils/validateTypes'); |
| const vendor = require('../../utils/vendor'); |
| |
| const ruleName = 'declaration-block-no-duplicate-properties'; |
| |
| const messages = ruleMessages(ruleName, { |
| rejected: (property) => `Unexpected duplicate "${property}"`, |
| }); |
| |
| /** @type {import('stylelint').Rule} */ |
| const rule = (primary, secondaryOptions) => { |
| return (root, result) => { |
| const validOptions = validateOptions( |
| result, |
| ruleName, |
| { actual: primary }, |
| { |
| actual: secondaryOptions, |
| possible: { |
| ignore: [ |
| 'consecutive-duplicates', |
| 'consecutive-duplicates-with-different-values', |
| 'consecutive-duplicates-with-same-prefixless-values', |
| ], |
| ignoreProperties: [isString], |
| }, |
| optional: true, |
| }, |
| ); |
| |
| if (!validOptions) { |
| return; |
| } |
| |
| const ignoreDuplicates = optionsMatches(secondaryOptions, 'ignore', 'consecutive-duplicates'); |
| const ignoreDiffValues = optionsMatches( |
| secondaryOptions, |
| 'ignore', |
| 'consecutive-duplicates-with-different-values', |
| ); |
| const ignorePrefixlessSameValues = optionsMatches( |
| secondaryOptions, |
| 'ignore', |
| 'consecutive-duplicates-with-same-prefixless-values', |
| ); |
| |
| eachDeclarationBlock(root, (eachDecl) => { |
| /** @type {string[]} */ |
| const decls = []; |
| /** @type {string[]} */ |
| const values = []; |
| |
| eachDecl((decl) => { |
| const prop = decl.prop; |
| const value = decl.value; |
| |
| if (!isStandardSyntaxProperty(prop)) { |
| return; |
| } |
| |
| if (isCustomProperty(prop)) { |
| return; |
| } |
| |
| // Return early if the property is to be ignored |
| if (optionsMatches(secondaryOptions, 'ignoreProperties', prop)) { |
| return; |
| } |
| |
| // Ignore the src property as commonly duplicated in at-fontface |
| if (prop.toLowerCase() === 'src') { |
| return; |
| } |
| |
| const indexDuplicate = decls.indexOf(prop.toLowerCase()); |
| |
| if (indexDuplicate !== -1) { |
| if (ignoreDiffValues || ignorePrefixlessSameValues) { |
| // fails if duplicates are not consecutive |
| if (indexDuplicate !== decls.length - 1) { |
| report({ |
| message: messages.rejected(prop), |
| node: decl, |
| result, |
| ruleName, |
| }); |
| |
| return; |
| } |
| |
| const duplicateValue = values[indexDuplicate]; |
| |
| if (ignorePrefixlessSameValues) { |
| // fails if values of consecutive, unprefixed duplicates are equal |
| if (vendor.unprefixed(value) !== vendor.unprefixed(duplicateValue)) { |
| report({ |
| message: messages.rejected(prop), |
| node: decl, |
| result, |
| ruleName, |
| }); |
| |
| return; |
| } |
| } |
| |
| // fails if values of consecutive duplicates are equal |
| if (value === duplicateValue) { |
| report({ |
| message: messages.rejected(prop), |
| node: decl, |
| result, |
| ruleName, |
| }); |
| |
| return; |
| } |
| |
| return; |
| } |
| |
| if (ignoreDuplicates && indexDuplicate === decls.length - 1) { |
| return; |
| } |
| |
| report({ |
| message: messages.rejected(prop), |
| node: decl, |
| result, |
| ruleName, |
| }); |
| } |
| |
| decls.push(prop.toLowerCase()); |
| values.push(value.toLowerCase()); |
| }); |
| }); |
| }; |
| }; |
| |
| rule.ruleName = ruleName; |
| rule.messages = messages; |
| module.exports = rule; |