import { type Struct } from 'superstruct';
/**
 * Represents the possible severities of a linter rule.
 */
export declare const SEVERITY: Readonly<{
    /**
     * Rule is disabled, nothing happens.
     */
    off: 0;
    /**
     * Rule is enabled, and throws a warning when violated.
     *
     * @example Bad practices, deprecated syntax, formatting issues, redundant rules, etc.
     */
    warn: 1;
    /**
     * Rule is enabled, and throws an error when violated.
     *
     * @example Unknown scriptlets, unknown modifiers, etc.
     */
    error: 2;
    /**
     * Rule is enabled, and throws a fatal error when violated.
     *
     * @example Syntax error (parsing error)
     */
    fatal: 3;
}>;
/**
 * Names of the possible severities.
 */
export declare const SEVERITY_NAMES: readonly string[];
/**
 * Values of the possible severities.
 */
export declare const SEVERITY_VALUES: readonly (0 | 1 | 2 | 3)[];
/**
 * Type for the possible severity names.
 */
export type SeverityName = keyof typeof SEVERITY;
/**
 * Type for the possible severity values.
 */
export type SeverityValue = typeof SEVERITY[SeverityName];
/**
 * Type for the possible severities.
 */
export type AnySeverity = SeverityName | SeverityValue;
/**
 * Always returns the severity value. Typically used to get the severity value from a string.
 *
 * @param value The value to get the severity value from.
 *
 * @returns The severity value.
 */
export declare function getSeverity(value: AnySeverity): SeverityValue;
/**
 * Checks whether the given value is a valid severity.
 *
 * @param value The value to check.
 *
 * @returns Whether the value is a valid severity.
 */
export declare function isSeverity(value: unknown): value is AnySeverity;
/**
 * Superstruct type definition for the linter rule severity.
 *
 * @see {@link https://github.com/ianstormtaylor/superstruct/blob/main/src/structs/types.ts}
 *
 * @returns Defined struct.
 */
export declare function severity(): Struct<AnySeverity, null>;