1 | 'use strict';
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2 |
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3 | const _ = require('lodash');
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4 | const report = require('../../utils/report');
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5 | const ruleMessages = require('../../utils/ruleMessages');
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6 | const validateOptions = require('../../utils/validateOptions');
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7 |
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8 | const ruleName = 'selector-max-empty-lines';
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9 |
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10 | const messages = ruleMessages(ruleName, {
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11 | expected: (max) => `Expected no more than ${max} empty ${max === 1 ? 'line' : 'lines'}`,
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12 | });
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13 |
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14 | function rule(max, options, context) {
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15 | const maxAdjacentNewlines = max + 1;
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16 |
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17 | return (root, result) => {
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18 | const validOptions = validateOptions(result, ruleName, {
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19 | actual: max,
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20 | possible: _.isNumber,
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21 | });
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22 |
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23 | if (!validOptions) {
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24 | return;
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25 | }
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26 |
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27 | const violatedCRLFNewLinesRegex = new RegExp(`(?:\r\n){${maxAdjacentNewlines + 1},}`);
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28 | const violatedLFNewLinesRegex = new RegExp(`\n{${maxAdjacentNewlines + 1},}`);
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29 | const allowedLFNewLinesString = context.fix ? '\n'.repeat(maxAdjacentNewlines) : '';
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30 | const allowedCRLFNewLinesString = context.fix ? '\r\n'.repeat(maxAdjacentNewlines) : '';
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31 |
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32 | root.walkRules((rule) => {
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33 | const selector = rule.raws.selector ? rule.raws.selector.raw : rule.selector;
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34 |
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35 | if (context.fix) {
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36 | const newSelectorString = selector
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37 | .replace(new RegExp(violatedLFNewLinesRegex, 'gm'), allowedLFNewLinesString)
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38 | .replace(new RegExp(violatedCRLFNewLinesRegex, 'gm'), allowedCRLFNewLinesString);
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39 |
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40 | if (rule.raws.selector) {
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41 | rule.raws.selector.raw = newSelectorString;
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42 | } else {
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43 | rule.selector = newSelectorString;
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44 | }
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45 | } else if (
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46 | violatedLFNewLinesRegex.test(selector) ||
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47 | violatedCRLFNewLinesRegex.test(selector)
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48 | ) {
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49 | report({
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50 | message: messages.expected(max),
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51 | node: rule,
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52 | index: 0,
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53 | result,
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54 | ruleName,
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55 | });
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56 | }
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57 | });
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58 | };
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59 | }
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60 |
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61 | rule.ruleName = ruleName;
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62 | rule.messages = messages;
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63 | module.exports = rule;
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