import type { CodeModule, JsonValue } from '../browser/project-change.js';
export { currentEngineContract, findEngineContract, type EngineContract } from './engine-contract.js';
export type RuntimeModule = Pick<CodeModule, 'imports' | 'source'>;
export interface RuntimeProgram {
    readonly engineContract: string;
    readonly engineDigest: string;
    readonly entryModuleId: string;
    readonly modules: Readonly<Record<string, RuntimeModule>>;
}
export interface RuntimeCapabilityCall {
    readonly invocationId: string;
    readonly kind: string;
    readonly payload: JsonValue;
    readonly signal: AbortSignal;
}
export interface RuntimeCapabilityResponse {
    readonly body: JsonValue;
    readonly status: number;
}
export interface LlmTaskInvocation {
    readonly input: Readonly<Record<string, JsonValue>>;
    readonly invocationId: string;
    readonly mode: 'chat' | 'json';
    readonly signal: AbortSignal;
    readonly version: 1;
}
export type LlmTaskResult = {
    readonly kind: 'completed';
    readonly value: JsonValue;
    readonly version: 1;
} | {
    readonly code: 'llm.output-invalid' | 'llm.unavailable';
    readonly kind: 'failed';
    readonly message: string;
    readonly version: 1;
};
export type InvokeLlmTask = (invocation: LlmTaskInvocation) => Promise<LlmTaskResult>;
export interface RuntimeInvocation {
    readonly capability: (call: RuntimeCapabilityCall) => Promise<RuntimeCapabilityResponse>;
    readonly input: JsonValue;
    readonly invocationId: string;
    readonly program: RuntimeProgram;
    readonly signal?: AbortSignal;
}
export interface RuntimeHarness {
    readonly engineDigest: string;
    invoke(invocation: RuntimeInvocation): Promise<JsonValue>;
}
export interface RuntimeConformanceCase {
    readonly name: string;
    verify(harness: RuntimeHarness): Promise<void>;
}
export declare const runtimeConformanceCases: readonly RuntimeConformanceCase[];