1 | "use strict";
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2 | var __extends = (this && this.__extends) || (function () {
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3 | var extendStatics = function (d, b) {
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4 | extendStatics = Object.setPrototypeOf ||
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5 | ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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6 | function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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7 | return extendStatics(d, b);
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8 | }
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9 | return function (d, b) {
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10 | extendStatics(d, b);
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11 | function __() { this.constructor = d; }
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12 | d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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13 | };
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14 | })();
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15 | Object.defineProperty(exports, "__esModule", { value: true });
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16 | var ts = require("typescript");
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17 | var Lint = require("tslint");
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18 | var tsutils = require("tsutils");
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19 | var FAILURE_STRING = 'Do not use http-equiv="refresh"';
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20 | var Rule = (function (_super) {
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21 | __extends(Rule, _super);
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22 | function Rule() {
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23 | return _super !== null && _super.apply(this, arguments) || this;
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24 | }
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25 | Rule.prototype.apply = function (sourceFile) {
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26 | if (sourceFile.languageVariant === ts.LanguageVariant.JSX) {
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27 | return this.applyWithFunction(sourceFile, walk);
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28 | }
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29 | else {
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30 | return [];
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31 | }
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32 | };
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33 | Rule.metadata = {
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34 | ruleName: 'react-a11y-meta',
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35 | type: 'functionality',
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36 | description: 'For accessibility of your website, HTML meta elements must not have http-equiv="refresh".',
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37 | options: null,
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38 | optionsDescription: '',
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39 | typescriptOnly: true,
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40 | issueClass: 'Ignored',
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41 | issueType: 'Warning',
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42 | severity: 'Low',
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43 | level: 'Opportunity for Excellence',
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44 | group: 'Accessibility'
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45 | };
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46 | return Rule;
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47 | }(Lint.Rules.AbstractRule));
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48 | exports.Rule = Rule;
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49 | function walk(ctx) {
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50 | function validateOpeningElement(parent, openElement) {
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51 | if (openElement.tagName.getText() === 'meta') {
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52 | var attributes = openElement.attributes;
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53 | attributes.properties.forEach(function (parameter) {
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54 | if (parameter.kind === ts.SyntaxKind.JsxAttribute) {
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55 | var attribute = parameter;
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56 | if (attribute.name.getText() === 'http-equiv') {
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57 | if (attribute.initializer !== undefined && isStringLiteral(attribute.initializer, 'refresh')) {
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58 | ctx.addFailureAt(parent.getStart(), openElement.getWidth(), FAILURE_STRING);
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59 | }
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60 | }
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61 | }
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62 | });
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63 | }
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64 | }
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65 | function cb(node) {
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66 | if (tsutils.isJsxSelfClosingElement(node)) {
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67 | validateOpeningElement(node, node);
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68 | return;
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69 | }
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70 | if (tsutils.isJsxElement(node)) {
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71 | validateOpeningElement(node, node.openingElement);
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72 | }
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73 | return ts.forEachChild(node, cb);
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74 | }
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75 | return ts.forEachChild(ctx.sourceFile, cb);
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76 | }
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77 | function isStringLiteral(expression, literal) {
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78 | if (expression !== undefined) {
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79 | if (expression.kind === ts.SyntaxKind.StringLiteral) {
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80 | var value = expression.text;
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81 | return value === literal;
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82 | }
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83 | else if (expression.kind === ts.SyntaxKind.JsxExpression) {
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84 | var exp = expression;
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85 | if (exp.expression !== undefined && exp.expression.kind === ts.SyntaxKind.StringLiteral) {
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86 | var value = exp.expression.text;
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87 | return value === literal;
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88 | }
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89 | }
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90 | }
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91 | return undefined;
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92 | }
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93 |
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