/**
 * @omnify/ts — TypeScript Interface Generator
 *
 * Generates TypeScript interfaces from schema definitions.
 * Handles compound type expansion via expandedProperties, association types,
 * enum references, and all standard property types.
 */
import type { SchemaDefinition, PropertyDefinition, TSInterface, TSProperty, GeneratorOptions } from './types.js';
/** Convert PascalCase/camelCase to snake_case. */
export declare function toSnakeCase(str: string): string;
/**
 * Physical FK column name for an owning-side association property.
 *
 * The convention is `<property_snake>_id`, but a property already named with
 * that suffix IS the column — `table_session_id` is what Laravel's `belongsTo`
 * convention names it and what a legacy table already has. Appending
 * unconditionally produced `table_session_id_id` (issue #149).
 */
export declare function toFkColumnName(propertyName: string): string;
export declare function getPropertyType(property: PropertyDefinition, allSchemas: Record<string, SchemaDefinition>): string;
/**
 * Convert a property to TSProperty array.
 * Compound types expand to multiple properties via expandedProperties.
 * MorphTo and ManyToOne also return multiple properties (FK + relation).
 */
export declare function propertyToTSProperties(propertyName: string, property: PropertyDefinition, schema: SchemaDefinition, allSchemas: Record<string, SchemaDefinition>, options: GeneratorOptions): TSProperty[];
/** Generate a TSInterface from a schema definition. */
export declare function schemaToInterface(schema: SchemaDefinition, allSchemas: Record<string, SchemaDefinition>, options: GeneratorOptions): TSInterface;
/** Format a TypeScript property line.
 *
 * Nullable fields (DB column allows NULL) emit `field?: T | null` so
 * consumers can accept the actual JSON value the backend serializes
 * (`null`), not just an absent key. Mirrors the Go target's `*T`
 * pointer convention — `*string` in Go ↔ `string | null` in TS.
 * Pure-optional fields (e.g. payload DTOs that allow omitting) keep
 * the `field?: T` shape. Issue #103 Phase 2 TS-Go nullability sync.
 */
export declare function formatProperty(property: TSProperty): string;
/** Format a TypeScript interface. */
export declare function formatInterface(iface: TSInterface): string;
/** Generate interfaces for all non-enum, non-hidden schemas. */
export declare function generateInterfaces(schemas: Record<string, SchemaDefinition>, options: GeneratorOptions): TSInterface[];
/** Check if interface uses DateTimeString or DateString types. */
export declare function needsDateTimeImports(iface: TSInterface): {
    dateTime: boolean;
    date: boolean;
};