/**
 * Minimal, dependency-free translation layer for the Svelte binding.
 *
 * The canonical English dictionary lives in `pptx-viewer-shared/i18n` (shared
 * with the React, Vue, and Angular bindings, which each plug it into their
 * framework's i18n library). Svelte has no blessed i18n runtime, so this
 * module implements the small subset the viewer needs: dictionary lookup by
 * locale with English fallback, `{{name}}` interpolation, and the shared
 * `keyToLabel` humanised fallback for missing keys.
 */
/** A flat dictionary of dotted `pptx.*` keys to display strings. */
export type TranslationDictionary = Record<string, string>;
/** Translate `key`, interpolating `{{name}}` placeholders from `params`. */
export type Translator = (key: string, params?: Record<string, string | number>) => string;
/**
 * Register (or extend) the dictionary for a locale. Later registrations are
 * merged over earlier ones, so hosts can override individual keys.
 */
export declare function registerTranslations(locale: string, dictionary: TranslationDictionary): void;
/**
 * List every locale code with a registered dictionary: `en` (built in) plus
 * anything added via {@link registerTranslations}. Used by File > Options'
 * Language tab to offer only locales the host has actually wired up.
 */
export declare function getRegisteredLocales(): string[];
/** Interpolate `{{name}}` placeholders (the shared-dictionary convention). */
export declare function interpolate(message: string, params: Record<string, string | number> | undefined): string;
/**
 * Translate a key for a locale: exact locale dictionary, then its base
 * language (`fr-CA` falls back to `fr`), then English, then the humanised
 * `keyToLabel` fallback so missing keys never render as raw dotted paths.
 */
export declare function translate(locale: string, key: string, params?: Record<string, string | number>): string;
/** Build a {@link Translator} bound to a (lazily-read) locale. */
export declare function createTranslator(getLocale: () => string): Translator;
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