/** Cross-process identity carried by managed child sessions. */
export declare const PI_PARENT_PID_ENV = "PI_PARENT_PID";
export declare const PI_PARENT_SESSION_ENV = "PI_PARENT_SESSION";
export declare const PI_ORCHESTRATION_AGENT_ID_ENV = "PI_ORCHESTRATION_AGENT_ID";
export declare const PI_TASK_REF_ENV = "PI_TASK_REF";
/** A malformed or non-positive parent pid is ignored. */
export declare function getParentPid(env?: NodeJS.ProcessEnv): number | undefined;
export declare function getParentSessionId(env?: NodeJS.ProcessEnv): string | undefined;
export declare function getOrchestrationAgentId(env?: NodeJS.ProcessEnv): string | undefined;
export declare function getProcessTaskRef(env?: NodeJS.ProcessEnv): string | undefined;
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