/** Supported protein tables. */
export type Protein = "poultry" | "beef" | "pork";
/** A pasteurization lookup table for one protein. */
export interface PasteurizationTable {
    protein: Protein;
    /** Core temperature (F) below which holding does not pasteurize in a practical time. */
    minTempF: number;
    /** Core temperature (F) at or above which lethality is treated as instant. */
    instantTempF: number;
    /** Sorted ascending [tempF, holdMinutes] points for the required hold time. */
    points: ReadonlyArray<readonly [number, number]>;
}
/** Return the pasteurization table for a protein. Defaults to poultry. */
export declare function getPasteurizationTable(protein?: Protein): PasteurizationTable;
/**
 * Required hold time (minutes) at a core temperature for the protein.
 *
 * - Returns 0 when the temperature is at or above the instant-safe target.
 * - Returns null when the temperature is below the table minimum, meaning
 *   holding will not pasteurize in a practical time.
 * - Otherwise interpolates between published points. Above the highest listed
 *   point (but below the instant target) the smallest listed hold time is used.
 */
export declare function requiredHoldMinutes(temperatureF: number, protein?: Protein): number | null;
/** Input for a pasteurization assessment. */
export interface PasteurizationInput {
    /** Current core temperature in Fahrenheit. */
    temperatureF: number;
    /** Minutes the core has been held at or above temperatureF. */
    holdMinutes: number;
    /** Protein table to use. Default: poultry. */
    protein?: Protein;
}
/** Result of a pasteurization assessment. */
export interface PasteurizationResult {
    protein: Protein;
    temperatureF: number;
    /** Required hold minutes at this temperature, or null when too low to pasteurize. */
    requiredMinutes: number | null;
    /** Minutes held so far, clamped to be non-negative. */
    heldMinutes: number;
    /** Minutes remaining until safe. 0 when safe now, null when too low to pasteurize. */
    remainingMinutes: number | null;
    /** True when the food is pasteurized (instant target reached or hold met). */
    safe: boolean;
    /** True when at or above the instant-safe temperature. */
    instant: boolean;
    /** Instant-safe target temperature (F) for this protein. */
    instantTempF: number;
}
/**
 * Assess pasteurization for a core temperature and how long it has been held.
 *
 * The model is intentionally simple: it compares the time held at or above the
 * current core temperature against the required hold time for that temperature.
 * It does not integrate accumulated lethality across a changing temperature.
 */
export declare function assessPasteurization(input: PasteurizationInput): PasteurizationResult;
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