/**
 * LLM Execution Runtime
 *
 * Handles prompt building and the LLM tool loop.
 * Delegates provider-specific logic to ProviderAdapter implementations.
 */
import { type ToolFunction, type ResolvedTooledPromptConfig, type ContentPart, type PromptContent, type ResolvedSchema } from './types.js';
import type { TooledPromptEmitter } from './events.js';
import type { Store } from './store.js';
import type { Usage } from './providers/types.js';
export { parseSSEStream } from './streaming.js';
/**
 * Build the final prompt content from template parts and resolved values.
 * Returns a plain string when no images are present (zero behavior change),
 * or a ContentPart[] array when images exist.
 */
export declare function buildPromptText(strings: TemplateStringsArray, values: unknown[]): PromptContent;
/**
 * Run the LLM tool loop until completion or max iterations.
 *
 * When schema is provided, returns T directly (throws on error).
 * When no schema, returns string message (throws on error).
 *
 * @param promptText - The prompt text to send to the LLM
 * @param tools - Array of tool functions available to the LLM
 * @param config - Resolved configuration (all values already merged)
 * @param emitter - Event emitter for streaming events
 * @param schema - Optional resolved schema for structured output
 * @param returnStore - Optional return store; when filled, the tool loop exits early
 * @param systemPrompt - Optional processed system prompt text
 * @param systemImages - Optional images extracted from system prompt
 * @param history - Optional previous conversation messages to prepend
 */
export declare function runToolLoop<T = string>(promptText: PromptContent, tools: ToolFunction[], config: ResolvedTooledPromptConfig, emitter: TooledPromptEmitter, schema?: ResolvedSchema<T>, returnStore?: Store<T>, systemPrompt?: PromptContent, systemImages?: ContentPart[], history?: unknown[]): Promise<{
    result: T;
    messages: unknown[];
    usage?: Usage;
}>;
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