72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
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"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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var _jsxAstUtils = require("jsx-ast-utils");
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var _schemas = require("../util/schemas");
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var _ISO = _interopRequireDefault(require("../util/attributes/ISO.json"));
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/**
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* @fileoverview Enforce lang attribute has a valid value.
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* @author Ethan Cohen
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*/
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// ----------------------------------------------------------------------------
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// Rule Definition
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// ----------------------------------------------------------------------------
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var errorMessage = 'lang attribute must have a valid value.';
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var schema = (0, _schemas.generateObjSchema)();
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module.exports = {
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meta: {
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docs: {
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url: 'https://github.com/evcohen/eslint-plugin-jsx-a11y/tree/master/docs/rules/lang.md'
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},
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schema: [schema]
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},
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create: function create(context) {
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return {
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JSXAttribute: function JSXAttribute(node) {
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var name = (0, _jsxAstUtils.propName)(node);
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if (name && name.toUpperCase() !== 'LANG') {
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return;
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}
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var parent = node.parent;
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var type = (0, _jsxAstUtils.elementType)(parent);
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if (type && type !== 'html') {
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return;
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}
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var value = (0, _jsxAstUtils.getLiteralPropValue)(node); // Don't check identifiers
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if (value === null) {
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return;
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}
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if (value === undefined) {
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context.report({
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node,
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message: errorMessage
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});
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return;
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}
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var hyphen = value.indexOf('-');
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var lang = hyphen > -1 ? value.substring(0, hyphen) : value;
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var country = hyphen > -1 ? value.substring(3) : undefined;
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if (_ISO["default"].languages.indexOf(lang) > -1 && (country === undefined || _ISO["default"].countries.indexOf(country) > -1)) {
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return;
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}
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context.report({
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node,
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message: errorMessage
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});
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}
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};
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}
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};
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