import { TargetCaseType } from './ensure';
import { Commit } from './parse';
/**
 * Rules match the input either as successful or failed.
 * For example, when `header-full-stop` detects a full stop and is set as "always"; it's true.
 * If the `header-full-stop` discovers a full stop but is set to "never"; it's false.
 */
export declare type RuleOutcome = Readonly<[boolean, string?]>;
/**
 * Rules receive a parsed commit, condition, and possible additional settings through value.
 * All rules should provide the most sensible rule condition and value.
 */
export declare type RuleType = 'async' | 'sync' | 'either';
export declare type BaseRule<Value = never, Type extends RuleType = 'either'> = (parsed: Commit, when?: RuleConfigCondition, value?: Value) => Type extends 'either' ? RuleOutcome | Promise<RuleOutcome> : Type extends 'async' ? Promise<RuleOutcome> : Type extends 'sync' ? RuleOutcome : never;
export declare type Rule<Value = never> = BaseRule<Value, 'either'>;
export declare type AsyncRule<Value = never> = BaseRule<Value, 'async'>;
export declare type SyncRule<Value = never> = BaseRule<Value, 'sync'>;
/**
 * Rules always have a severity.
 * Severity indicates what to do if the rule is found to be broken
 * 0 - Disable this rule
 * 1 - Warn for violations
 * 2 - Error for violations
 */
export declare enum RuleConfigSeverity {
    Disabled = 0,
    Warning = 1,
    Error = 2
}
/**
 * Rules always have a condition.
 * It can be either "always" (as tested), or "never" (as tested).
 * For example, `header-full-stop` can be enforced as "always" or "never".
 */
export declare type RuleConfigCondition = 'always' | 'never';
export declare type RuleConfigTuple<T> = T extends void ? Readonly<[RuleConfigSeverity.Disabled]> | Readonly<[RuleConfigSeverity, RuleConfigCondition]> : Readonly<[RuleConfigSeverity.Disabled]> | Readonly<[RuleConfigSeverity, RuleConfigCondition, T]>;
export declare enum RuleConfigQuality {
    User = 0,
    Qualified = 1
}
export declare type QualifiedRuleConfig<T> = (() => RuleConfigTuple<T>) | (() => Promise<RuleConfigTuple<T>>) | RuleConfigTuple<T>;
export declare type RuleConfig<V = RuleConfigQuality.Qualified, T = void> = V extends RuleConfigQuality.Qualified ? RuleConfigTuple<T> : QualifiedRuleConfig<T>;
export declare type CaseRuleConfig<V = RuleConfigQuality.User> = RuleConfig<V, TargetCaseType | TargetCaseType[]>;
export declare type LengthRuleConfig<V = RuleConfigQuality.User> = RuleConfig<V, number>;
export declare type EnumRuleConfig<V = RuleConfigQuality.User> = RuleConfig<V, string[]>;
export declare type RulesConfig<V = RuleConfigQuality.User> = {
    'body-case': CaseRuleConfig<V>;
    'body-empty': RuleConfig<V>;
    'body-full-stop': RuleConfig<V, string>;
    'body-leading-blank': RuleConfig<V>;
    'body-max-length': LengthRuleConfig<V>;
    'body-max-line-length': LengthRuleConfig<V>;
    'body-min-length': LengthRuleConfig<V>;
    'footer-empty': RuleConfig<V>;
    'footer-leading-blank': RuleConfig<V>;
    'footer-max-length': LengthRuleConfig<V>;
    'footer-max-line-length': LengthRuleConfig<V>;
    'footer-min-length': LengthRuleConfig<V>;
    'header-case': CaseRuleConfig<V>;
    'header-full-stop': RuleConfig<V, string>;
    'header-max-length': LengthRuleConfig<V>;
    'header-min-length': LengthRuleConfig<V>;
    'references-empty': RuleConfig<V>;
    'scope-case': CaseRuleConfig<V>;
    'scope-empty': RuleConfig<V>;
    'scope-enum': EnumRuleConfig<V>;
    'scope-max-length': LengthRuleConfig<V>;
    'scope-min-length': LengthRuleConfig<V>;
    'signed-off-by': RuleConfig<V, string>;
    'subject-case': CaseRuleConfig<V>;
    'subject-empty': RuleConfig<V>;
    'subject-full-stop': RuleConfig<V, string>;
    'subject-max-length': LengthRuleConfig<V>;
    'subject-min-length': LengthRuleConfig<V>;
    'trailer-exists': RuleConfig<V, string>;
    'type-case': CaseRuleConfig<V>;
    'type-empty': RuleConfig<V>;
    'type-enum': EnumRuleConfig<V>;
    'type-max-length': LengthRuleConfig<V>;
    'type-min-length': LengthRuleConfig<V>;
    [key: string]: AnyRuleConfig<V>;
};
export declare type AnyRuleConfig<V> = RuleConfig<V, unknown> | RuleConfig<V, void>;
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