/**
 * @license
 * Copyright (c) 2016, Contributors
 * SPDX-License-Identifier: ISC
 */
/**
 * An object whose all properties have the same type, where each key is a string.
 */
export interface Dictionary<T = any> {
    [key: string]: T;
}
/**
 * Returns the keys of T.
 */
export declare type KeyOf<T> = {
    [K in keyof T]: string extends K ? never : number extends K ? never : K;
} extends {
    [_ in keyof T]: infer U;
} ? U : never;
/**
 * Returns the type of a Dictionary or array values.
 */
export declare type ValueOf<T> = T extends (infer U)[] ? U : T[keyof T];
export declare type ArgsInput = string | any[];
export declare type ArgsOutput = (string | number)[];
export interface Arguments {
    /** Non-option arguments */
    _: ArgsOutput;
    /** Arguments after the end-of-options flag `--` */
    '--'?: ArgsOutput;
    /** All remaining options */
    [argName: string]: any;
}
export interface DetailedArguments {
    /** An object representing the parsed value of `args` */
    argv: Arguments;
    /** Populated with an error object if an exception occurred during parsing. */
    error: Error | null;
    /** The inferred list of aliases built by combining lists in opts.alias. */
    aliases: Dictionary<string[]>;
    /** Any new aliases added via camel-case expansion. */
    newAliases: Dictionary<boolean>;
    /** Any new argument created by opts.default, no aliases included. */
    defaulted: Dictionary<boolean>;
    /** The configuration loaded from the yargs stanza in package.json. */
    configuration: Configuration;
}
export interface Configuration {
    /** Should variables prefixed with --no be treated as negations? Default is `true` */
    'boolean-negation': boolean;
    /** Should hyphenated arguments be expanded into camel-case aliases? Default is `true` */
    'camel-case-expansion': boolean;
    /** Should arrays be combined when provided by both command line arguments and a configuration file? Default is `false`  */
    'combine-arrays': boolean;
    /** Should keys that contain `.` be treated as objects? Default is `true` */
    'dot-notation': boolean;
    /** Should arguments be coerced into an array when duplicated? Default is `true` */
    'duplicate-arguments-array': boolean;
    /** Should array arguments be coerced into a single array when duplicated? Default is `true` */
    'flatten-duplicate-arrays': boolean;
    /** Should arrays consume more than one positional argument following their flag? Default is `true` */
    'greedy-arrays': boolean;
    /** Should parsing stop at the first text argument? This is similar to how e.g. ssh parses its command line. Default is `false` */
    'halt-at-non-option': boolean;
    /** Should nargs consume dash options as well as positional arguments? Default is `false` */
    'nargs-eats-options': boolean;
    /** The prefix to use for negated boolean variables. Default is `'no-'` */
    'negation-prefix': string;
    /** Should positional values that look like numbers be parsed? Default is `true` */
    'parse-positional-numbers': boolean;
    /** Should keys that look like numbers be treated as such? Default is `true` */
    'parse-numbers': boolean;
    /** Should unparsed flags be stored in -- or _? Default is `false` */
    'populate--': boolean;
    /** Should a placeholder be added for keys not set via the corresponding CLI argument? Default is `false` */
    'set-placeholder-key': boolean;
    /** Should a group of short-options be treated as boolean flags? Default is `true` */
    'short-option-groups': boolean;
    /** Should aliases be removed before returning results? Default is `false` */
    'strip-aliased': boolean;
    /** Should dashed keys be removed before returning results? This option has no effect if camel-case-expansion is disabled. Default is `false` */
    'strip-dashed': boolean;
    /** Should unknown options be treated like regular arguments? An unknown option is one that is not configured in opts. Default is `false` */
    'unknown-options-as-args': boolean;
}
export declare type ArrayOption = string | {
    key: string;
    boolean?: boolean;
    string?: boolean;
    number?: boolean;
    integer?: boolean;
};
export declare type CoerceCallback = (arg: any) => any;
export declare type ConfigCallback = (configPath: string) => {
    [key: string]: any;
} | Error;
export interface Options {
    /** An object representing the set of aliases for a key: `{ alias: { foo: ['f']} }`. */
    alias: Dictionary<string | string[]>;
    /**
     * Indicate that keys should be parsed as an array: `{ array: ['foo', 'bar'] }`.
     * Indicate that keys should be parsed as an array and coerced to booleans / numbers:
     * { array: [ { key: 'foo', boolean: true }, {key: 'bar', number: true} ] }`.
     */
    array: ArrayOption | ArrayOption[];
    /** Arguments should be parsed as booleans: `{ boolean: ['x', 'y'] }`. */
    boolean: string | string[];
    /** Indicate a key that represents a path to a configuration file (this file will be loaded and parsed). */
    config: string | string[] | Dictionary<boolean | ConfigCallback>;
    /** configuration objects to parse, their properties will be set as arguments */
    configObjects: Dictionary<any>[];
    /** Provide configuration options to the yargs-parser. */
    configuration: Partial<Configuration>;
    /**
     * Provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error), e.g.
     * `{ coerce: { foo: function (arg) { return modifiedArg } } }`.
     */
    coerce: Dictionary<CoerceCallback>;
    /** Indicate a key that should be used as a counter, e.g., `-vvv = {v: 3}`. */
    count: string | string[];
    /** Provide default values for keys: `{ default: { x: 33, y: 'hello world!' } }`. */
    default: Dictionary<any>;
    /** Environment variables (`process.env`) with the prefix provided should be parsed. */
    envPrefix?: string;
    /** Specify that a key requires n arguments: `{ narg: {x: 2} }`. */
    narg: Dictionary<number>;
    /** `path.normalize()` will be applied to values set to this key. */
    normalize: string | string[];
    /** Keys should be treated as strings (even if they resemble a number `-x 33`). */
    string: string | string[];
    /** Keys should be treated as numbers. */
    number: string | string[];
    /** i18n handler, defaults to util.format */
    __: (format: any, ...param: any[]) => string;
    /** alias lookup table defaults */
    key: Dictionary<any>;
}
export interface YargsParserMixin {
    cwd: Function;
    format: Function;
    normalize: Function;
    require: Function;
    resolve: Function;
    env: Function;
}
export declare type OptionsDefault = ValueOf<Pick<Required<Options>, 'default'>>;
export interface Parser {
    (args: ArgsInput, opts?: Partial<Options>): Arguments;
    detailed(args: ArgsInput, opts?: Partial<Options>): DetailedArguments;
    camelCase(str: string): string;
    decamelize(str: string, joinString?: string): string;
    looksLikeNumber(x: null | undefined | number | string): boolean;
}
export declare type StringFlag = Dictionary<string[]>;
export declare type BooleanFlag = Dictionary<boolean>;
export declare type NumberFlag = Dictionary<number>;
export declare type ConfigsFlag = Dictionary<string | string[] | boolean | ConfigCallback>;
export declare type CoercionsFlag = Dictionary<CoerceCallback>;
export declare type KeysFlag = string[];
export interface Flags {
    aliases: StringFlag;
    arrays: BooleanFlag;
    bools: BooleanFlag;
    strings: BooleanFlag;
    numbers: BooleanFlag;
    counts: BooleanFlag;
    normalize: BooleanFlag;
    configs: ConfigsFlag;
    nargs: NumberFlag;
    coercions: CoercionsFlag;
    keys: KeysFlag;
}
export declare type Flag = ValueOf<Omit<Flags, 'keys'>>;
export declare type FlagValue = ValueOf<Flag>;
export declare type FlagsKey = KeyOf<Omit<Flags, 'keys'>>;
export declare type ArrayFlagsKey = Extract<FlagsKey, 'bools' | 'strings' | 'numbers'>;
export declare enum DefaultValuesForTypeKey {
    BOOLEAN = "boolean",
    STRING = "string",
    NUMBER = "number",
    ARRAY = "array"
}
export interface DefaultValuesForType {
    [DefaultValuesForTypeKey.BOOLEAN]: boolean;
    [DefaultValuesForTypeKey.STRING]: string;
    [DefaultValuesForTypeKey.NUMBER]: undefined;
    [DefaultValuesForTypeKey.ARRAY]: any[];
}