1 | "use strict";
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2 | var __extends = (this && this.__extends) || (function () {
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3 | var extendStatics = Object.setPrototypeOf ||
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4 | ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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5 | function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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6 | return function (d, b) {
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7 | extendStatics(d, b);
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8 | function __() { this.constructor = d; }
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9 | d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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10 | };
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11 | })();
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12 | Object.defineProperty(exports, "__esModule", { value: true });
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13 | var ts = require("typescript");
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14 | var Lint = require("tslint");
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15 | var ErrorTolerantWalker_1 = require("./utils/ErrorTolerantWalker");
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16 | var Rule = (function (_super) {
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17 | __extends(Rule, _super);
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18 | function Rule() {
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19 | return _super !== null && _super.apply(this, arguments) || this;
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20 | }
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21 | Rule.prototype.apply = function (sourceFile) {
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22 | if (Rule.isWarningShown === false) {
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23 | console.warn('Warning: valid-typeof rule is deprecated. Replace your usage with the TSLint typeof-compare rule.');
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24 | Rule.isWarningShown = true;
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25 | }
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26 | return this.applyWithWalker(new ValidTypeofRuleWalker(sourceFile, this.getOptions()));
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27 | };
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28 | Rule.metadata = {
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29 | ruleName: 'valid-typeof',
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30 | type: 'maintainability',
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31 | description: 'Ensures that the results of typeof are compared against a valid string.',
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32 | options: null,
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33 | optionsDescription: '',
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34 | typescriptOnly: true,
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35 | issueClass: 'Non-SDL',
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36 | issueType: 'Error',
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37 | severity: 'Critical',
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38 | level: 'Opportunity for Excellence',
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39 | group: 'Deprecated'
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40 | };
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41 | Rule.FAILURE_STRING = 'Invalid comparison in typeof. Did you mean ';
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42 | Rule.VALID_TERMS = ['undefined', 'object', 'boolean', 'number', 'string', 'function', 'symbol'];
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43 | Rule.isWarningShown = false;
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44 | return Rule;
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45 | }(Lint.Rules.AbstractRule));
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46 | exports.Rule = Rule;
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47 | var ValidTypeofRuleWalker = (function (_super) {
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48 | __extends(ValidTypeofRuleWalker, _super);
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49 | function ValidTypeofRuleWalker() {
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50 | return _super !== null && _super.apply(this, arguments) || this;
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51 | }
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52 | ValidTypeofRuleWalker.prototype.visitBinaryExpression = function (node) {
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53 | if (node.left.kind === ts.SyntaxKind.TypeOfExpression && node.right.kind === ts.SyntaxKind.StringLiteral) {
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54 | this.validateTypeOf(node.right);
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55 | }
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56 | else if (node.right.kind === ts.SyntaxKind.TypeOfExpression && node.left.kind === ts.SyntaxKind.StringLiteral) {
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57 | this.validateTypeOf(node.left);
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58 | }
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59 | _super.prototype.visitBinaryExpression.call(this, node);
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60 | };
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61 | ValidTypeofRuleWalker.prototype.validateTypeOf = function (node) {
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62 | if (Rule.VALID_TERMS.indexOf(node.text) === -1) {
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63 | var start = node.getStart();
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64 | var width = node.getWidth();
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65 | this.addFailureAt(start, width, Rule.FAILURE_STRING + this.getClosestTerm(node.text) + '?');
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66 | }
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67 | };
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68 | ValidTypeofRuleWalker.prototype.getClosestTerm = function (term) {
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69 | var _this = this;
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70 | var closestMatch = 99999999;
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71 | return Rule.VALID_TERMS.reduce(function (closestTerm, thisTerm) {
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72 | var distance = _this.levenshteinDistance(term, thisTerm);
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73 | if (distance < closestMatch) {
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74 | closestMatch = distance;
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75 | closestTerm = thisTerm;
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76 | }
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77 | return closestTerm;
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78 | }, '');
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79 | };
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80 | ValidTypeofRuleWalker.prototype.levenshteinDistance = function (a, b) {
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81 | if (a.length === 0) {
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82 | return b.length;
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83 | }
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84 | if (b.length === 0) {
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85 | return a.length;
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86 | }
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87 | var matrix = [];
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88 | for (var i = 0; i <= b.length; i++) {
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89 | matrix[i] = [i];
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90 | }
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91 | for (var i = 0; i <= a.length; i++) {
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92 | matrix[0][i] = i;
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93 | }
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94 | for (var i = 1; i <= b.length; i++) {
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95 | for (var j = 1; j <= a.length; j++) {
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96 | if (b.charAt(i - 1) === a.charAt(j - 1)) {
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97 | matrix[i][j] = matrix[i - 1][j - 1];
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98 | }
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99 | else {
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100 | var substitutionValue = matrix[i - 1][j - 1] + 1;
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101 | var insertionValue = matrix[i][j - 1] + 1;
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102 | var deletionDistance = matrix[i - 1][j] + 1;
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103 | var minDistance = Math.min(substitutionValue, insertionValue, deletionDistance);
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104 | matrix[i][j] = minDistance;
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105 | }
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106 | }
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107 | }
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108 | return matrix[b.length][a.length];
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109 | };
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110 | return ValidTypeofRuleWalker;
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111 | }(ErrorTolerantWalker_1.ErrorTolerantWalker));
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112 |
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