import type { ModelAddSource, ModelLoadOptions, ModelLoadProgress, EngineEvent, ObservabilityEvent, QueryErrorCode, ChatInput, EmbedOptions, QueryInput, QueryOptions, TokenBatch } from '../models/types.js';
import type { BrowserCachePolicyOptions } from '../models/asset-store.js';
import type { RuntimeBackendOverride } from '../engine/runtime-assets.js';
import type { SharedTokenRingDescriptor } from '../runtime/shared-token-ring.js';
export interface WorkerRuntimeConfig {
    moduleUrl?: string;
    wasmUrl?: string;
    wasmThreading?: 'single-thread' | 'pthread';
    defaultBackendOverride?: RuntimeBackendOverride | null;
    moduleOptions?: Record<string, unknown>;
    maxModelBytes?: number;
    storageRoot?: string;
    browserCache?: BrowserCachePolicyOptions;
    trustedOrigins?: string[];
}
export type WorkerQueryOptions = Pick<QueryOptions, 'contextKey' | 'maxTokens' | 'temperature' | 'topP' | 'sampling' | 'stop' | 'grammar'> & {
    emitTokens: boolean;
};
export type WorkerRequestMessage = {
    kind: 'models-install';
    callId: number;
    config: WorkerRuntimeConfig;
    source: ModelAddSource;
} | {
    kind: 'models-load';
    callId: number;
    config: WorkerRuntimeConfig;
    modelId: string;
    options: Pick<ModelLoadOptions, 'backend' | 'observability' | 'runtime'>;
} | {
    kind: 'models-list';
    callId: number;
    config: WorkerRuntimeConfig;
} | {
    kind: 'models-remove';
    callId: number;
    config: WorkerRuntimeConfig;
    id: string;
} | {
    kind: 'models-unload';
    callId: number;
    config: WorkerRuntimeConfig;
} | {
    kind: 'query';
    callId: number;
    config: WorkerRuntimeConfig;
    input: QueryInput;
    options: WorkerQueryOptions;
} | {
    kind: 'chat';
    callId: number;
    config: WorkerRuntimeConfig;
    input: ChatInput;
    options: WorkerQueryOptions;
} | {
    kind: 'embed';
    callId: number;
    config: WorkerRuntimeConfig;
    input: string;
    options: Pick<EmbedOptions, 'normalize' | 'contextKey'>;
} | {
    kind: 'cancel';
    targetCallId: number;
};
export type WorkerResponseMessage = {
    kind: 'resolve';
    callId: number;
    value?: unknown;
} | {
    kind: 'reject';
    callId: number;
    message: string;
    errorName?: string;
    queryErrorCode?: QueryErrorCode;
} | {
    kind: 'load-progress';
    callId: number;
    progress: ModelLoadProgress;
} | {
    kind: 'token-ring-ready';
    descriptor: SharedTokenRingDescriptor;
} | {
    kind: 'token-ring-claim';
    callId: number;
    nativeRequestId: number;
} | {
    kind: 'token-batch';
    callId: number;
    batch: TokenBatch;
} | {
    kind: 'observability-event';
    event: ObservabilityEvent;
} | {
    kind: 'engine-event';
    event: EngineEvent;
};