/**
 * ToolExecutionRecorder — real per-call tool execution capture.
 *
 * One recorder is created per generate()/stream() call and attached to the
 * request options (surviving option spreads). Tools are wrapped exactly once
 * at the central tool-assembly points (BaseProvider.prepareGenerationContext /
 * getToolsForStream), so every loop — the AI-SDK loop and the native
 * Gemini/Anthropic loops alike — records through the same wrapper with real
 * params, timing, and error status. Memory is bounded: serialized results are
 * capped at `maxResultChars` and the record list at `maxRecords`.
 */
import type { Tool, ToolExecutionCaptureOptions, ToolExecutionRecord, StandardRecord, ToolExecutionSummaryInternal } from "../types/index.js";
/** Default cap on serialized result characters kept per record (~8KB). */
export declare const DEFAULT_TOOL_RESULT_CAPTURE_CHARS = 8192;
/** Default cap on records kept per turn. */
export declare const DEFAULT_TOOL_EXECUTION_MAX_RECORDS = 500;
/**
 * Serialize a tool result to bounded text. JSON when serializable, else
 * String(); truncation is explicit so consumers know the text is partial.
 */
export declare function serializeToolResult(result: unknown, maxChars: number): string;
/**
 * Error-shaped tool results (MCP `isError`, `{error}` payloads) count as
 * failures even though the loop received them as normal returns.
 */
/**
 * True for an `error` value that actually carries something — `true`, a
 * non-empty string, or a non-empty object/array — never a falsy placeholder
 * a tool sets on every call (`error: false`, `error: 0`, `error: {}`).
 */
export declare function isMeaningfulError(error: unknown): boolean;
export declare function isErrorShapedToolResult(result: unknown): boolean;
/**
 * Per-call recorder for tool executions. See module doc.
 */
export declare class ToolExecutionRecorder {
    #private;
    constructor(capture?: ToolExecutionCaptureOptions);
    /** Record one completed (or failed) execution. Never throws. */
    record(entry: {
        toolName: string;
        params: unknown;
        result?: unknown;
        error?: unknown;
        startedAt: number;
        durationMs: number;
    }): void;
    /** All records captured so far (oldest first, bounded by maxRecords). */
    getRecords(): ToolExecutionRecord[];
    /** True when at least one execution was recorded. */
    hasRecords(): boolean;
    /** Number of records evicted by the maxRecords cap. */
    getDroppedCount(): number;
    /**
     * Wrap every executable tool so its invocations are recorded. Wrapping is
     * idempotent — already-wrapped executes are left untouched, so a generate
     * that falls back to another path never double-records.
     */
    wrapTools(tools: Record<string, Tool>): Record<string, Tool>;
    /**
     * Attach this recorder to a request options object. The property is
     * enumerable on purpose: downstream stages spread options (`{...options}`)
     * and the recorder must survive into the provider loops.
     */
    attachTo(options: object): void;
    /** Retrieve the recorder a request is carrying, if any. */
    static from(options: unknown): ToolExecutionRecorder | undefined;
}
/**
 * Convert legacy loop-local `{name, input, output}` entries (plus optional
 * timing/error fields) into `ToolExecutionRecord`s. Used as the fallback when
 * a path produced executions the recorder did not see (e.g. results captured
 * before the recorder existed, or breaker/not-found entries that never
 * reached a real execute()).
 */
export declare function toToolExecutionRecords(legacyExecutions: unknown[] | undefined, capture?: ToolExecutionCaptureOptions): ToolExecutionRecord[];
/**
 * Resolve the toolExecutions for a result: recorder records when the request
 * carried a recorder that saw executions, else a conversion of the loop's
 * legacy accumulator entries.
 */
/**
 * The public `toolCalls` view of a native turn's execution summaries.
 *
 * The native generate loops record every executed call in
 * `ToolExecutionSummaryInternal[]` and surface it as `toolExecutions`, but
 * never mapped it onto `EnhancedGenerateResult.toolCalls` — the field the type
 * has always declared and the ai-package formatter used to fill. A caller
 * reading `result.toolCalls` after a tool ran saw nothing. This is the one
 * place that mapping lives, so the three native paths cannot drift apart.
 */
export declare function toolCallsFromSummaries(summaries: ReadonlyArray<ToolExecutionSummaryInternal>): Array<{
    toolCallId: string;
    toolName: string;
    args: StandardRecord;
}>;
export declare function resolveToolExecutionRecords(options: unknown, legacyExecutions?: unknown[]): ToolExecutionRecord[];