import { type Translate } from './settings-locale.js';
export type VoiceFailureKind = 'empty' | 'config' | 'upstream';
export type VoiceStatusDisplay = {
    readonly state: string;
    readonly detail: string;
    readonly detailCode?: string;
    readonly detailParams?: Readonly<Record<string, string | number>>;
};
export declare function statusLabel(display: VoiceStatusDisplay, t: Translate): string;
export type RemoteFailureLike = {
    readonly code?: string;
    readonly message?: string;
    readonly params?: Readonly<Record<string, string | number>>;
};
export declare function classifyVoiceFailure(message: string, code?: string): VoiceFailureKind;
export declare function remoteFailureDetail(error: RemoteFailureLike): string;
export declare function remoteFailureParams(error: unknown): Readonly<Record<string, string | number>> | undefined;
export declare function failureMessage(error: unknown): string;
export declare const MIN_RECORDING_MS = 400;
export declare const MIN_AUDIO_BYTES = 512;
export declare function isTrivialRecording(byteLength: number, durationMs: number): boolean;
export declare function base64ByteLength(value: string): number;