import type { ActionPriorityInput, ActionPriorityResult, ActionPriorityLevel, ApRatingBand } from './types.js';
/**
 * AIAG-VDA 2019 Action Priority (AP) Matrix
 *
 * Replaces the traditional RPN-based prioritization with a structured
 * S × O × D matrix lookup that better reflects risk relationships.
 *
 * @formula AP = lookup(severityGroup, occurrenceGroup, detectionGroup)
 *   - RPN = S × O × D (still computed for reference)
 *
 * @reference AIAG & VDA (2019). "FMEA Handbook", 1st Edition — Action Priority table.
 *   Band structure and cell values cross-checked against the Relyence FMEA
 *   user guide reproduction (https://relyence.com/help/user-guide/fmea-ap.html).
 *
 * Rating bands (group index in result):
 *   - Severity:   {1}=0, {2-3}=1, {4-6}=2, {7-8}=3, {9-10}=4
 *   - Occurrence: {1}=0, {2-3}=1, {4-5}=2, {6-7}=3, {8-10}=4
 *   - Detection:  {1}=0, {2-4}=1, {5-6}=2, {7-10}=3
 *
 * Handbook invariants: S=1 → AP is always L; O=1 → AP is always L
 * (failure prevented/eliminated needs no action regardless of S or D).
 *
 * @throws {RangeError} Severity must be between 1 and 10
 * @throws {RangeError} Occurrence must be between 1 and 10
 * @throws {RangeError} Detection must be between 1 and 10
 */
export declare function actionPriority(input: ActionPriorityInput): ActionPriorityResult;
/** AIAG-VDA 2019 severity rating bands; array index = `severityGroup`. */
export declare const AP_SEVERITY_BANDS: readonly ApRatingBand[];
/** AIAG-VDA 2019 occurrence rating bands; array index = `occurrenceGroup`. */
export declare const AP_OCCURRENCE_BANDS: readonly ApRatingBand[];
/** AIAG-VDA 2019 detection rating bands; array index = `detectionGroup`. */
export declare const AP_DETECTION_BANDS: readonly ApRatingBand[];
/**
 * AP lookup table: `AP_TABLE[severityGroup][occurrenceGroup][detectionGroup]`.
 * Group indices follow `AP_SEVERITY_BANDS` / `AP_OCCURRENCE_BANDS` / `AP_DETECTION_BANDS`.
 * Rows are O groups ascending {1}, {2-3}, {4-5}, {6-7}, {8-10};
 * columns are D groups ascending {1}, {2-4}, {5-6}, {7-10}.
 */
export declare const AP_TABLE: readonly (readonly (readonly ActionPriorityLevel[])[])[];
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