import * as dntShim from "../../../_dnt.shims.js";
export type RuntimeKind = "bun" | "cloudflare" | "deno" | "node" | "unknown";
/** @internal Exported so overlapping host signals can be regression-tested. */
export declare function classifyRuntimeSignals(signals: {
    bun: boolean;
    cloudflare: boolean;
    deno: boolean;
    node: boolean;
}): RuntimeKind;
export declare function getDenoRuntime(): typeof dntShim.Deno | undefined;
/**
 * Check if an executable path is a compiled Deno binary.
 * Detects by binary name: "deno" or "deno.exe" = standard runtime, anything else = compiled.
 * @internal Exported for testing only.
 */
export declare function testDenoCompiledDetection(execPath: string, standalone?: boolean): boolean;
export declare const runtimeKind: RuntimeKind;
/** True if running in Bun runtime (Bun also exposes process.versions.node). */
export declare const isBun: boolean;
/** True if running in Cloudflare Workers, including nodejs_compat workers. */
export declare const isCloudflare: boolean;
/** True if running in Node.js rather than a more specific compatible host. */
export declare const isNode: boolean;
/** True if running in the real Deno runtime rather than a dnt shim. */
export declare const isDeno: boolean;
/**
 * True if running in a compiled Deno binary.
 * Compiled binaries cannot dynamically import HTTP URLs - they must use local file:// paths.
 * This is evaluated once at module load time.
 */
export declare const isDenoCompiled: boolean;
/**
 * Detect if running in Node.js (vs Deno) at call time.
 * Use this function instead of the constant when runtime detection needs to happen
 * at call time (e.g., when bundled with esbuild's __esm lazy initialization pattern).
 */
export declare function isNodeRuntime(): boolean;
/**
 * Detect if code is executing in a server environment (SSR).
 *
 * This function provides consistent SSR detection that works correctly even when
 * SSR globals stub the window/document objects. It should be used instead of
 * `typeof window === "undefined"` checks to avoid hydration mismatches.
 *
 * Priority:
 * 1. Check __VERYFRONT_SSR__ flag (set by ssr-globals/index.ts) - most reliable
 * 2. Check if window is undefined (fallback for non-veryfront environments)
 *
 * @returns true if executing on server, false if in browser
 * @see plans/architecture-audit/006.1-ssr-detection-inconsistencies.md
 */
export declare function isServerEnvironment(): boolean;
/**
 * Detect if code is executing in a browser environment.
 * Inverse of isServerEnvironment() - use this instead of `typeof window !== "undefined"`.
 *
 * @returns true if executing in browser, false if on server
 */
export declare function isBrowserEnvironment(): boolean;
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