/**
 * Environment Resolution Module
 *
 * Handles resolution of the runtime environment (preview vs production)
 * and validates release ID requirements.
 *
 * @module server/runtime-handler/environment-resolution
 */
import type { ProxyEnvironment } from "./proxy-environment.js";
interface EnvironmentResolutionResult {
    /** Resolved environment (preview/production) */
    resolvedEnvironment: "preview" | "production" | undefined;
    /** Resolved release ID (may be synthetic for standalone mode) */
    releaseId: string | undefined;
    /** Error response if validation fails */
    errorResponse: Response | undefined;
}
interface EnvironmentResolutionOptions {
    /** Environment from proxy headers */
    proxyEnv: ProxyEnvironment | undefined;
    /** Mode from request context */
    reqCtxMode: "preview" | "production" | undefined;
    /** Release ID from headers */
    releaseId: string | undefined;
    /** Project slug */
    projectSlug: string | undefined;
    /** Project ID */
    projectId: string | undefined;
    /** Environment name */
    environmentName: string | undefined;
    /** Host header */
    host: string;
    /** Whether this is a local project */
    isLocalProject: boolean;
    /** Whether running in proxy mode */
    isProxyMode: boolean;
    /** Pathname (for WS/HMR skip) */
    pathname: string;
    /** Default environment for standalone mode */
    defaultEnvironment: "preview" | "production" | undefined;
}
/**
 * Resolve the runtime environment and validate release ID requirements.
 *
 * Returns an error response if validation fails (e.g., missing releaseId in production).
 */
export declare function resolveEnvironment(opts: EnvironmentResolutionOptions): EnvironmentResolutionResult;
export {};
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