/**
 * Type inference utilities for TONL
 */
import type { TONLTypeHint } from "./types.js";
/**
 * Infer the TONL type hint for a JavaScript value
 */
export declare function inferPrimitiveType(value: unknown): TONLTypeHint;
/**
 * Coerce a string value to the specified TONL type
 */
export declare function coerceValue(value: string, type: TONLTypeHint): any;
/**
 * Check if an array is uniform (all objects have same keys)
 */
export declare function isUniformObjectArray(arr: any[]): boolean;
/**
 * Get stable column order for uniform object array
 */
export declare function getUniformColumns(arr: any[]): string[];
/**
 * Check if an array is semi-uniform (objects share a significant percentage of keys)
 * This allows for optional fields while still using tabular format
 */
export declare function isSemiUniformObjectArray(arr: any[], threshold?: number): boolean;
/**
 * Get all columns (union of all keys) from an array of objects
 * Returns keys in sorted order for stability
 */
export declare function getAllColumns(arr: any[]): string[];
/**
 * Try to infer type from string value (when no type hint provided)
 */
export declare function inferTypeFromString(value: string): TONLTypeHint;
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