1 | 'use strict';
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2 |
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3 | const _ = require('lodash');
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4 | const atRuleParamIndex = require('../../utils/atRuleParamIndex');
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5 | const isRangeContextMediaFeature = require('../../utils/isRangeContextMediaFeature');
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6 | const matchesStringOrRegExp = require('../../utils/matchesStringOrRegExp');
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7 | const mediaParser = require('postcss-media-query-parser').default;
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8 | const postcss = require('postcss');
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9 | const rangeContextNodeParser = require('../rangeContextNodeParser');
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10 | const report = require('../../utils/report');
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11 | const ruleMessages = require('../../utils/ruleMessages');
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12 | const validateOptions = require('../../utils/validateOptions');
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13 |
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14 | const ruleName = 'media-feature-name-value-whitelist';
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15 |
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16 | const messages = ruleMessages(ruleName, {
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17 | rejected: (name, value) => `Unexpected value "${value}" for name "${name}"`,
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18 | });
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19 |
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20 | function rule(whitelist) {
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21 | return (root, result) => {
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22 | const validOptions = validateOptions(result, ruleName, {
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23 | actual: whitelist,
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24 | possible: [_.isObject],
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25 | });
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26 |
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27 | if (!validOptions) {
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28 | return;
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29 | }
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30 |
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31 | root.walkAtRules(/^media$/i, (atRule) => {
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32 | mediaParser(atRule.params).walk(/^media-feature-expression$/i, (node) => {
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33 | const mediaFeatureRangeContext = isRangeContextMediaFeature(node.parent.value);
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34 |
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35 |
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36 | if (!node.value.includes(':') && !mediaFeatureRangeContext) {
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37 | return;
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38 | }
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39 |
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40 | const mediaFeatureNode = _.find(node.nodes, { type: 'media-feature' });
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41 |
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42 | let mediaFeatureName;
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43 | let values = [];
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44 |
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45 | if (mediaFeatureRangeContext) {
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46 | const parsedRangeContext = rangeContextNodeParser(mediaFeatureNode);
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47 |
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48 | mediaFeatureName = parsedRangeContext.name.value;
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49 | values = parsedRangeContext.values;
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50 | } else {
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51 | mediaFeatureName = mediaFeatureNode.value;
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52 | values.push(_.find(node.nodes, { type: 'value' }));
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53 | }
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54 |
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55 | for (let i = 0; i < values.length; i++) {
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56 | const valueNode = values[i];
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57 | const value = valueNode.value;
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58 | const unprefixedMediaFeatureName = postcss.vendor.unprefixed(mediaFeatureName);
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59 |
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60 | const featureWhitelist = _.find(whitelist, (v, whitelistFeatureName) =>
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61 | matchesStringOrRegExp(unprefixedMediaFeatureName, whitelistFeatureName),
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62 | );
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63 |
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64 | if (featureWhitelist === undefined) {
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65 | return;
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66 | }
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67 |
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68 | if (matchesStringOrRegExp(value, featureWhitelist)) {
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69 | return;
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70 | }
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71 |
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72 | report({
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73 | index: atRuleParamIndex(atRule) + valueNode.sourceIndex,
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74 | message: messages.rejected(mediaFeatureName, value),
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75 | node: atRule,
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76 | ruleName,
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77 | result,
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78 | });
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79 | }
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80 | });
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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 | rule.ruleName = ruleName;
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86 | rule.messages = messages;
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87 | module.exports = rule;
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