import { ZodRawShape, z } from 'zod';

type InitEnvOptions<TServer extends ZodRawShape, TClient extends ZodRawShape> = {
    server: TServer;
    client: TClient;
    runtimeEnv?: Record<string, unknown>;
    /**
     * Whether to throw on missing environment variables.
     * If false, will return undefined for missing optional variables.
     * @default true
     */
    strict?: boolean;
    /**
     * Custom error handler for missing/invalid environment variables
     */
    onError?: (error: EnvError) => void;
};
declare class EnvError extends Error {
    readonly type: "missing" | "invalid" | "client_access";
    readonly variable: string;
    readonly cause?: unknown | undefined;
    constructor(type: "missing" | "invalid" | "client_access", variable: string, message: string, cause?: unknown | undefined);
}
declare function initEnv<TServer extends ZodRawShape, TClient extends ZodRawShape>(opts: InitEnvOptions<TServer, TClient>): {
    client: z.infer<z.ZodObject<TClient>>;
    server: z.core.$InferObjectOutput<TServer, {}> | undefined;
};
/**
 * Creates Hono Bindings type from turboenv server schema
 * Use this to get autocompletion for c.env in Hono applications
 */
type CreateHonoBindings<TServer extends ZodRawShape> = {
    Bindings: z.infer<z.ZodObject<TServer>>;
};
/**
 * Utility to extract server env types for Hono integration
 */
type ExtractServerEnv<T> = T extends {
    server: infer S;
} ? S : never;

export { type CreateHonoBindings, EnvError, type ExtractServerEnv, initEnv };