/**
 * The client library needs to be aware of whether it is in production. In production, we will NOT send certain sensitive data (see below).
 *
 * To determine whether we're in "local" mode, the library first checks:
 * - Whether the FIBERPLANE_ENVIRONMENT env var === "local"
 * - If there is no FIBERPLANE_ENVIRONMENT set, then we check if FIBERPLANE_OTEL_ENDPOINT contains localhost.
 *
 */
export declare function isInLocalMode(env: Record<string, string | null> | null | undefined, isLocalFallback: boolean): boolean;