import type { PermissionRule } from "./types.js";
export declare function isObject(value: unknown): value is Record<string, unknown>;
export declare function getNestedValue(value: unknown, path: string[]): unknown;
export declare function unwrapData<T = unknown>(response: unknown): T;
export declare function asString(value: unknown): string | undefined;
/**
 * Extract the text content of the last assistant message from an array of
 * session messages.
 *
 * Searches backward from the end of the array. The first message whose role
 * is `"assistant"` (checked at `info.role` first, then top-level `role`) is
 * selected. Only parts with `type === "text"` are included; their `text`
 * values are concatenated with an empty separator and trimmed.
 *
 * Returns `""` when no assistant message is found or the message has no text
 * parts.
 */
export declare function extractAssistantText(messages: unknown[]): string;
export declare function getPromptToolCompatibility(permissionRules: PermissionRule[]): Record<string, boolean> | undefined;
export declare function stableStringify(value: unknown): string;
export declare function makeToolSignature(toolName: string, args: unknown): string;
export declare function buildPromptText(args: {
    description: string;
    prompt: string;
    category?: string;
    scope?: string;
    constraints?: string[];
    guidanceText?: string;
    agent?: string;
    requiredTools?: string[];
    mustNotDo?: string[];
    sessionContext?: string;
}): string;
/**
 * Extract text content from ALL assistant messages in an array, joined with newline.
 *
 * Unlike {@link extractAssistantText} which returns only the LAST assistant message,
 * this collects text from every assistant message — suitable for delegation result
 * extraction where the full assistant output is needed.
 */
export declare function extractAllAssistantText(messages: unknown[]): string;
/**
 * Check whether assistant messages contain tool-use or other non-text work evidence.
 *
 * Used by delegation finalization to avoid erroring on "empty text" when the
 * assistant has been actively calling tools (tool_use, tool_result, or other
 * non-text part types indicate productive work even if no text was emitted).
 *
 * @param messages - Array of session messages (same shape as extractAllAssistantText).
 * @returns `true` if any assistant message contains at least one non-text part,
 *          indicating tool-use or other work evidence.
 */
export declare function hasAssistantWorkEvidence(messages: unknown[]): boolean;
/**
 * Convert an unknown error value to a human-readable string message.
 */
export declare function describeError(error: unknown): string;
/**
 * Deep merge two objects recursively.
 * Arrays are replaced (not merged) unless specified.
 * Primitives are overwritten by source.
 *
 * @param target - The target object to merge into.
 * @param source - The source object to merge from.
 * @returns The merged object.
 */
export declare function deepMerge<T extends Record<string, unknown>>(target: T, source: Partial<T>): T;
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