import { type ProjectEnvSnapshot } from "./snapshot.js";
/**
 * Run a function with project-specific environment variables.
 * Within the callback, `getProjectEnv()` will return values from `vars`.
 */
export declare function runWithProjectEnv<T>(vars: Readonly<Record<string, string>>, fn: () => T): T;
/**
 * Get a project-scoped environment variable from the current request context.
 * Returns undefined if no project env overlay is active or key is not present.
 */
export declare function getProjectEnv(key: string): string | undefined;
/**
 * Check whether a project env overlay is currently active.
 * When true, getEnv() should NOT fall through to host process env
 * to prevent remote projects from reading host-level secrets.
 */
export declare function isProjectEnvActive(): boolean;
/**
 * Get a snapshot of the current project env overlay.
 * Returns undefined if no overlay is active.
 * Used to forward env vars to isolated workers in proxy mode.
 */
export declare function getProjectEnvSnapshot(): ProjectEnvSnapshot | undefined;
//# sourceMappingURL=storage.d.ts.map