import type { NoiseExposureInput, NoiseExposureResult } from './types.js';
/**
 * Calculate noise exposure dose and TWA based on OSHA standards
 *
 * Dose = Sum(Cn/Tn) x 100
 * TWA = 16.61 x log10(D/100) + 90
 *
 * Where:
 * - Cn = actual exposure duration at a given noise level
 * - Tn = allowable exposure duration at that level
 * - D = dose percentage
 *
 * Status thresholds:
 * - compliant: dose <= 50% (action level)
 * - actionRequired: 50% < dose <= 100% (PEL)
 * - exceeds: dose > 100%
 *
 * @param input - Noise exposure input with array of exposures
 * @returns Noise exposure result with dose, TWA, and status
 * @throws {RangeError} an exposure entry has a negative duration.
 * @remarks An empty exposure list (no significant noise) is a valid input that
 *   reports a compliant 0% dose.
 */
export declare function noiseExposure(input: NoiseExposureInput): NoiseExposureResult;
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