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/** Small i18n helper for the browser.
*
* The server injects ``window.I18N`` as a nested message object. This module
* exposes ``t(key, fallback)`` to resolve dot-separated keys safely.
*/
(function () {
"use strict";
function t(key, fallback) {
if (typeof key !== "string") {
return fallback !== undefined ? fallback : String(key);
}
const parts = key.split(".");
let current = window.I18N;
for (const part of parts) {
if (current == null || typeof current !== "object" || !(part in current)) {
return fallback !== undefined ? fallback : key;
}
current = current[part];
}
if (typeof current === "string") {
return current;
}
return fallback !== undefined ? fallback : key;
}
window.t = t;
})();
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