1 | 'use strict';
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2 |
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3 | const ruleMessages = require('../../utils/ruleMessages');
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4 | const selectorListCommaWhitespaceChecker = require('../selectorListCommaWhitespaceChecker');
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5 | const validateOptions = require('../../utils/validateOptions');
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6 | const whitespaceChecker = require('../../utils/whitespaceChecker');
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7 |
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8 | const ruleName = 'selector-list-comma-newline-before';
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9 |
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10 | const messages = ruleMessages(ruleName, {
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11 | expectedBefore: () => 'Expected newline before ","',
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12 | expectedBeforeMultiLine: () => 'Expected newline before "," in a multi-line list',
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13 | rejectedBeforeMultiLine: () => 'Unexpected whitespace before "," in a multi-line list',
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14 | });
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15 |
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16 | function rule(expectation, options, context) {
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17 | const checker = whitespaceChecker('newline', expectation, messages);
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18 |
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19 | return (root, result) => {
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20 | const validOptions = validateOptions(result, ruleName, {
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21 | actual: expectation,
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22 | possible: ['always', 'always-multi-line', 'never-multi-line'],
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23 | });
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24 |
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25 | if (!validOptions) {
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26 | return;
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27 | }
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28 |
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29 | let fixData;
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30 |
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31 | selectorListCommaWhitespaceChecker({
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32 | root,
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33 | result,
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34 | locationChecker: checker.beforeAllowingIndentation,
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35 | checkedRuleName: ruleName,
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36 | fix: context.fix
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37 | ? (ruleNode, index) => {
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38 | fixData = fixData || new Map();
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39 | const commaIndices = fixData.get(ruleNode) || [];
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40 |
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41 | commaIndices.push(index);
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42 | fixData.set(ruleNode, commaIndices);
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43 |
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44 | return true;
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45 | }
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46 | : null,
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47 | });
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48 |
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49 | if (fixData) {
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50 | fixData.forEach((commaIndices, ruleNode) => {
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51 | let selector = ruleNode.raws.selector ? ruleNode.raws.selector.raw : ruleNode.selector;
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52 |
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53 | commaIndices
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54 | .sort((a, b) => b - a)
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55 | .forEach((index) => {
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56 | let beforeSelector = selector.slice(0, index);
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57 | const afterSelector = selector.slice(index);
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58 |
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59 | if (expectation.startsWith('always')) {
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60 | const spaceIndex = beforeSelector.search(/\s+$/);
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61 |
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62 | if (spaceIndex >= 0) {
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63 | beforeSelector =
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64 | beforeSelector.slice(0, spaceIndex) +
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65 | context.newline +
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66 | beforeSelector.slice(spaceIndex);
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67 | } else {
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68 | beforeSelector += context.newline;
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69 | }
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70 | } else if (expectation === 'never-multi-line') {
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71 | beforeSelector = beforeSelector.replace(/\s*$/, '');
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72 | }
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73 |
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74 | selector = beforeSelector + afterSelector;
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75 | });
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76 |
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77 | if (ruleNode.raws.selector) {
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78 | ruleNode.raws.selector.raw = selector;
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79 | } else {
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80 | ruleNode.selector = selector;
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81 | }
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82 | });
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83 | }
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84 | };
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85 | }
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86 |
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87 | rule.ruleName = ruleName;
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88 | rule.messages = messages;
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89 | module.exports = rule;
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