export declare const AppLanguageApi: import("@backstage/frontend-plugin-api").ExtensionDefinition<{
    kind: "api";
    name: "app-language";
    config: {};
    configInput: {};
    output: import("@backstage/frontend-plugin-api").ConfigurableExtensionDataRef<import("@backstage/frontend-plugin-api").AnyApiFactory, "core.api.factory", {}>;
    inputs: {};
    params: {
        factory: import("@backstage/frontend-plugin-api").AnyApiFactory;
    };
}>;