/**
 * Normalizes a locale name. So "en-us" becomes "en-US" and "sr-cyrl-rs" becomes "sr-Cyrl-RS". There are two special
 *  cases. For pseudo-locales like "qps-ploc", everything stays lowecase. For language-script locales like "uz-Cyrl",
 *  only the script name's first character should be uppercased.
 *
 * @internal
 */
export declare function normalizeLocaleName(localeName: string): string;
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