tslint-microsoft-contrib
Version:
TSLint Rules for Microsoft
71 lines • 3.46 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
}
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
var ts = require("typescript");
var Lint = require("tslint");
var tsutils = require("tsutils");
var JsxAttribute_1 = require("./utils/JsxAttribute");
function getFailureString() {
return 'The value of tabindex attribute is invalid or undefined. It must be either -1 or 0.';
}
exports.getFailureString = getFailureString;
var Rule = (function (_super) {
__extends(Rule, _super);
function Rule() {
return _super !== null && _super.apply(this, arguments) || this;
}
Rule.prototype.apply = function (sourceFile) {
return sourceFile.languageVariant === ts.LanguageVariant.JSX ? this.applyWithFunction(sourceFile, walk) : [];
};
Rule.metadata = {
ruleName: 'react-a11y-tabindex-no-positive',
type: 'maintainability',
description: 'Enforce tabindex value is **not greater than zero**.',
rationale: "References:\n <ul>\n <li><a href=\"https://www.w3.org/TR/2008/REC-WCAG20-20081211/#navigation-mechanisms-focus-order\">WCAG 2.4.3 - Focus Order</a></li>\n <li><a href=\"https://github.com/GoogleChrome/accessibility-developer-tools/wiki/Audit-Rules#tabindex-usage\">Audit Rules - tabindex-usage</a></li>\n <li><a href=\"https://github.com/GoogleChrome/accessibility-developer-tools/wiki/Audit-Rules#ax_focus_03\">Avoid positive integer values for tabIndex</a></li>\n </ul>",
options: null,
optionsDescription: '',
typescriptOnly: true,
issueClass: 'Non-SDL',
issueType: 'Warning',
severity: 'Important',
level: 'Opportunity for Excellence',
group: 'Accessibility'
};
return Rule;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
function walk(ctx) {
function cb(node) {
if (tsutils.isJsxAttribute(node)) {
var name_1 = JsxAttribute_1.getPropName(node);
if (!name_1 || name_1.toLowerCase() !== 'tabindex') {
return;
}
var literalString = JsxAttribute_1.getNumericLiteral(node) || JsxAttribute_1.getStringLiteral(node);
if (literalString === '') {
ctx.addFailureAt(node.getStart(), node.getWidth(), getFailureString());
}
else if (literalString && literalString !== '-1' && literalString !== '0') {
ctx.addFailureAt(node.getStart(), node.getWidth(), getFailureString());
}
else if (JsxAttribute_1.isEmpty(node)) {
ctx.addFailureAt(node.getStart(), node.getWidth(), getFailureString());
}
}
return ts.forEachChild(node, cb);
}
return ts.forEachChild(ctx.sourceFile, cb);
}
//# sourceMappingURL=reactA11yTabindexNoPositiveRule.js.map