import type { RoutineVariable } from "./types/routine.js";
type RoutineTemplateInput = string | null | undefined | Array<string | null | undefined>;
/**
 * Built-in variable names that are automatically available in routine templates
 * without needing to be defined in the routine's variables list.
 */
export declare const BUILTIN_ROUTINE_VARIABLE_NAMES: Set<string>;
export declare function isBuiltinRoutineVariable(name: string): boolean;
/**
 * Returns current values for all built-in routine variables.
 * `date` expands to the current date in YYYY-MM-DD format (UTC).
 * `timestamp` expands to a human-readable date and time (e.g. "April 28, 2026 at 12:17 PM UTC").
 */
export declare function getBuiltinRoutineVariableValues(): Record<string, string>;
export declare function isValidRoutineVariableName(name: string): boolean;
export declare function extractRoutineVariableNames(template: RoutineTemplateInput): string[];
export declare function syncRoutineVariablesWithTemplate(template: RoutineTemplateInput, existing: RoutineVariable[] | null | undefined): RoutineVariable[];
export declare function stringifyRoutineVariableValue(value: unknown): string;
export declare function interpolateRoutineTemplate(template: string | null | undefined, values: Record<string, unknown> | null | undefined): string | null;
export {};
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