/** Renderer variables must opt in explicitly; everything else stays Node-only. */
export declare const DEFAULT_RENDERER_ENV_PREFIX: readonly ["MURASAKI_PUBLIC_"];
/**
 * Load the same four-file hierarchy used by Vite/Next-style projects:
 * `.env`, `.env.local`, `.env.<mode>`, `.env.<mode>.local`.
 *
 * Existing process variables win over files. Loading into `process.env` makes
 * private values available to config, plugin hooks, Node Main, Server Actions,
 * and API Routes without exposing them to renderer code. Vite separately
 * filters renderer values through `build.envPrefix`.
 */
export declare function loadProjectEnv(projectRoot: string, mode: string): Record<string, string>;
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