import type { StandardSchemaV1 } from '@standard-schema/spec';
export declare const CLIENT_PREFIX: "PUBLIC_";
export type EnvConfigInput = {
    server?: Record<string, StandardSchemaV1>;
    client?: Record<string, StandardSchemaV1>;
    /** Explicit value source for client vars (e.g. Vite's import.meta.env). */
    runtimeEnv?: Record<string, unknown>;
};
export type BunderstackRole = 'all' | 'web' | 'worker';
/** Vars bunderstack itself consumes, always validated. */
export type BaseEnv = {
    NODE_ENV?: string;
    DATABASE_URL: string;
    DATABASE_AUTH_TOKEN?: string;
    AUTH_SECRET: string;
    REDIS_URL?: string;
    RESEND_API_KEY?: string;
    SMTP_URL?: string;
    BUNDERSTACK_EMAIL_PROVIDER?: string;
    BUNDERSTACK_EMAIL_FROM?: string;
    BUNDERHOST_ENVIRONMENT_ID?: string;
    BUNDERSTACK_ROLE: BunderstackRole;
};
type InferVars<T> = T extends Record<string, StandardSchemaV1> ? {
    [K in keyof T]: StandardSchemaV1.InferOutput<T[K]>;
} : unknown;
export type ValidatedEnv<TEnv extends EnvConfigInput | undefined> = [
    TEnv
] extends [EnvConfigInput] ? BaseEnv & InferVars<NonNullable<TEnv>['server']> & InferVars<NonNullable<TEnv>['client']> : BaseEnv;
export declare class BunderstackEnvError extends Error {
    readonly issues: string[];
    constructor(issues: string[]);
}
export type ValidateEnvOptions = {
    /** String tag of the configured email provider ('resend' | 'smtp'), if any. */
    emailProvider?: string;
    /** Value source; defaults to process.env. Tests pass this explicitly. */
    source?: Record<string, string | undefined>;
    /** Dialect-aware DATABASE_URL fallback; createBunderstack passes it. */
    defaultDatabaseUrl?: string;
};
export declare function validateEnv<TEnv extends EnvConfigInput | undefined>(envConfig: TEnv, options?: ValidateEnvOptions): ValidatedEnv<TEnv>;
/**
 * Browser-side companion (t3-env style): validates ONLY the client section.
 * Server keys exist on the returned object as traps that throw on access, so
 * a leaked import fails loudly instead of silently reading undefined.
 */
export declare function createClientEnv<TEnv extends EnvConfigInput>(envConfig: TEnv): InferVars<TEnv['client']>;
export {};
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