/**
 * Parses a comma-separated list of IDs and ranges into a sorted array of unique IDs.
 *
 * @param spec - ID specification string (e.g., "1,2,3-5")
 * @returns Sorted array of unique Modbus slave IDs (1-247)
 *
 * @example
 * parseIdRange("1,2,3-5") // [1, 2, 3, 4, 5]
 * parseIdRange("5,1,3") // [1, 3, 5]
 * parseIdRange("1-3,2-4") // [1, 2, 3, 4]
 */
export declare function parseIdRange(spec: string): number[];
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