1 |
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2 |
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3 | 'use strict';
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4 |
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5 | const report = require('../../utils/report');
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6 | const ruleMessages = require('../../utils/ruleMessages');
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7 | const validateOptions = require('../../utils/validateOptions');
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8 |
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9 | const ruleName = 'no-empty-first-line';
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10 | const noEmptyFirstLineTest = /^\s*[\r\n]/;
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11 |
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12 | const messages = ruleMessages(ruleName, {
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13 | rejected: 'Unexpected empty line',
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14 | });
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15 |
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16 | function rule(actual, _, context) {
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17 | return (root, result) => {
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18 | const validOptions = validateOptions(result, ruleName, { actual });
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19 |
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20 | if (!validOptions || root.source.inline || root.source.lang === 'object-literal') {
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21 | return;
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22 | }
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23 |
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24 | const rootString = context.fix ? root.toString() : root.source.input.css;
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25 |
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26 | if (!rootString.trim()) {
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27 | return;
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28 | }
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29 |
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30 | if (noEmptyFirstLineTest.test(rootString)) {
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31 | if (context.fix) {
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32 | root.nodes[0].raws.before = root.first.raws.before.trimStart();
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33 |
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34 | return;
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35 | }
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36 |
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37 | report({
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38 | message: messages.rejected,
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39 | node: root,
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40 | result,
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41 | ruleName,
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42 | });
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43 | }
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44 | };
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45 | }
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46 |
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47 | rule.ruleName = ruleName;
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48 | rule.messages = messages;
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49 | module.exports = rule;
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