/** * @fileoverview Enforce html element has lang prop. * @author Ethan Cohen */ // ---------------------------------------------------------------------------- // Rule Definition // ---------------------------------------------------------------------------- import { elementType, getProp, getPropValue } from 'jsx-ast-utils'; import { generateObjSchema } from '../util/schemas'; const errorMessage = ' elements must have the lang prop.'; const schema = generateObjSchema(); module.exports = { meta: { docs: {}, schema: [schema], }, create: context => ({ JSXOpeningElement: (node) => { const type = elementType(node); if (type && type !== 'html') { return; } const lang = getPropValue(getProp(node.attributes, 'lang')); if (lang) { return; } context.report({ node, message: errorMessage, }); }, }), };