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The React Framework

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"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.RouteAnnouncer = RouteAnnouncer; exports.default = void 0; var _react = _interopRequireDefault(require("react")); var _router = require("./router"); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } function RouteAnnouncer() { const { asPath } = (0, _router).useRouter(); const [routeAnnouncement, setRouteAnnouncement] = _react.default.useState(''); // Only announce the path change, but not for the first load because screen // reader will do that automatically. const previouslyLoadedPath = _react.default.useRef(asPath); // Every time the path changes, announce the new page’s title following this // priority: first the document title (from head), otherwise the first h1, or // if none of these exist, then the pathname from the URL. This methodology is // inspired by Marcy Sutton’s accessible client routing user testing. More // information can be found here: // https://www.gatsbyjs.com/blog/2019-07-11-user-testing-accessible-client-routing/ _react.default.useEffect(()=>{ // If the path hasn't change, we do nothing. if (previouslyLoadedPath.current === asPath) return; previouslyLoadedPath.current = asPath; if (document.title) { setRouteAnnouncement(document.title); } else { const pageHeader = document.querySelector('h1'); var ref; const content = (ref = pageHeader === null || pageHeader === void 0 ? void 0 : pageHeader.innerText) !== null && ref !== void 0 ? ref : pageHeader === null || pageHeader === void 0 ? void 0 : pageHeader.textContent; setRouteAnnouncement(content || asPath); } }, // TODO: switch to pathname + query object of dynamic route requirements [ asPath ]); return(/*#__PURE__*/ _react.default.createElement("p", { "aria-live": "assertive" // Make the announcement immediately. , id: "__next-route-announcer__", role: "alert", style: { border: 0, clip: 'rect(0 0 0 0)', height: '1px', margin: '-1px', overflow: 'hidden', padding: 0, position: 'absolute', width: '1px', // https://medium.com/@jessebeach/beware-smushed-off-screen-accessible-text-5952a4c2cbfe whiteSpace: 'nowrap', wordWrap: 'normal' } }, routeAnnouncement)); } var _default = RouteAnnouncer; exports.default = _default; //# sourceMappingURL=route-announcer.js.map