import fs from "fs";
export declare const ASR_PINNED_RUNTIME = "faster-whisper==1.2.1";
export declare const ASR_PINNED_CTRANSLATE2 = "ctranslate2==4.8.0";
export declare const ASR_STATE_VERSION = 2;
export declare const ASR_EXECUTION_PROFILES: readonly [{
    readonly device: "cpu";
    readonly computeType: "int8";
}, {
    readonly device: "cuda";
    readonly computeType: "float16";
}];
export type AsrExecutionProfile = (typeof ASR_EXECUTION_PROFILES)[number];
export declare const ASR_CPU_EXECUTION_PROFILE: {
    readonly device: "cpu";
    readonly computeType: "int8";
};
export declare const ASR_CUDA_EXECUTION_PROFILE: {
    readonly device: "cuda";
    readonly computeType: "float16";
};
export declare const ASR_DEVICE_PREFERENCES: readonly ["auto", "cpu", "cuda"];
export type AsrDevicePreference = (typeof ASR_DEVICE_PREFERENCES)[number];
export type AsrDeviceReadiness = "not_ready" | "migration_pending" | "ready";
export type AsrMigrationStatus = "pending" | "completed";
export declare const ASR_FAILURE_CATEGORIES: readonly ["no_nvidia_gpu", "cuda_runtime_missing", "runtime_version_mismatch", "model_probe_failed"];
export type AsrFailureCategory = (typeof ASR_FAILURE_CATEGORIES)[number];
export declare const ASR_MODEL_SPECS: readonly [{
    readonly key: "tiny";
    readonly repository: "Systran/faster-whisper-tiny";
    readonly revision: "d90ca5fe260221311c53c58e660288d3deb8d356";
    readonly approximateMB: 78.2;
}, {
    readonly key: "base";
    readonly repository: "Systran/faster-whisper-base";
    readonly revision: "ebe41f70d5b6dfa9166e2c581c45c9c0cfc57b66";
    readonly approximateMB: 148;
}, {
    readonly key: "small";
    readonly repository: "Systran/faster-whisper-small";
    readonly revision: "536b0662742c02347bc0e980a01041f333bce120";
    readonly approximateMB: 486;
}];
export type AsrModelKey = (typeof ASR_MODEL_SPECS)[number]["key"];
export type AsrModelSpec = (typeof ASR_MODEL_SPECS)[number];
export declare const ASR_PINNED_MODEL: "Systran/faster-whisper-small";
export declare const ASR_PINNED_REVISION: "536b0662742c02347bc0e980a01041f333bce120";
export declare function resolveModelSpec(key: AsrModelKey): AsrModelSpec;
export declare function isAllowlistedModel(repository: string, revision: string): boolean;
export type AsrStateKind = "not_installed" | "incomplete" | "ready";
export interface AsrState {
    kind: AsrStateKind;
    version?: number;
    runtime?: string;
    model?: string;
    revision?: string;
    modelKey?: AsrModelKey;
    executionProfile?: AsrExecutionProfile;
    deviceReadiness?: AsrDeviceReadiness;
    migrationStatus?: AsrMigrationStatus;
    failureCategory?: AsrFailureCategory;
}
export interface AsrStateWriteOptions {
    executionProfile?: AsrExecutionProfile;
    failureCategory?: AsrFailureCategory;
}
export declare function modelKeyForRepo(repository: string, revision: string): AsrModelKey | null;
export interface AsrPaths {
    root: string;
    venv: string;
    model: string;
    stateFile: string;
}
export declare function deriveAsrPaths(base?: string): AsrPaths;
export declare function resolveExecutionProfile(device: unknown, computeType: unknown): AsrExecutionProfile | undefined;
export declare function resolveDevicePreference(value: unknown): AsrDevicePreference | undefined;
export declare function readAsrState(stateFile: string, readFileSync?: typeof fs.readFileSync, existsSync?: typeof fs.existsSync, lstatSync?: typeof fs.lstatSync): AsrState;
export declare function writeAsrState(stateFile: string, modelKey?: AsrModelKey, options?: AsrStateWriteOptions, writeFileSync?: typeof fs.writeFileSync, renameSync?: typeof fs.renameSync, unlinkSync?: typeof fs.unlinkSync, mkdirSync?: typeof fs.mkdirSync, randomId?: () => string, lstatSync?: typeof fs.lstatSync, chmodSync?: typeof fs.chmodSync): void;
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