/**
 * Returns all environment variables that start with the configured public prefix.
 *
 * This is useful for exposing a controlled subset of environment variables
 * (e.g., client-side safe values) while keeping private ones hidden.
 *
 * - It filters `process.env` by keys starting with `PUBLIC_ENV_PREFIX`.
 * - Returns a plain object mapping variable names to their string values.
 */
export declare function getPublicEnvVariables(): Record<string, string>;
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