import { Type } from '../common/cli-types';
import { OptionDefinition, ParsedOption } from '../options/option-models';
import { ParameterDefinition } from '../parameters/parameter-models';
import { FilePath } from './additional-types';
import { AppContext } from '../app/app-context';
/**
 * Inject token for the type casting implementation
 *
 * @publicApi
 */
export declare const TYPE_CASTER: unique symbol;
/**
 * Interface that describes the requirements for the type casting behavior. The implementation must
 * be able to cast and validate both option and parameter values, taking in metadata and returning
 * the cast value. The default implementation is the `DefaultTypeCaster`.
 *
 * @publicApi
 */
export interface TypeCaster {
    /**
     * Validates a parsed option value and casts it to the type specified in the option metadata
     * @param defintion Option metadata
     * @param parsed Options parsed from the raw cli arguments
     */
    castOption(defintion: OptionDefinition, parsed: ParsedOption): any;
    /**
     * Validates a parsed parameter value and casts it to the type specified in the parameter metadata
     * @param defintion Parameter metadata
     * @param value Value parsed from the raw cli arguments
     */
    castParameter(defintion: ParameterDefinition, value: any): any;
}
/**
 * Default implementation of the `TypeCaster` which provides the following behavior:
 * - Ability to validate and cast the string, number, boolean, `Int`, `FilePath` types
 * - Other types will not be cast and returned their original values
 * - The `Int` type only accepts integers while numbers accept decimal places
 * - The `FilePath` is a special type which validates as string input to a valid file or directory,
 * returning an absolute and relative path once cast
 * - Booleans accept the strings *'true'* or *'false'* and *'0'* or *'1'*
 */
export declare class DefaultTypeCaster implements TypeCaster {
    private process;
    /**
     * Creates a new instance
     * @param process Process that provides access the cwd
     */
    constructor(process: AppContext);
    /**
     * Validates a parsed option value and casts it to the type specified in the option metadata
     * @param defintion Option metadata
     * @param value Option parsed from the raw cli arguments
     */
    castOption(defintion: OptionDefinition, arg: ParsedOption): any;
    /**
     * Validates a parsed parameter value and casts it to the type specified in the parameter metadata
     * @param defintion Parameter metadata
     * @param value Value parsed from the raw cli arguments
     */
    castParameter(defintion: ParameterDefinition, value: any): any;
    /**
     * Returns a string of the value, with pretty formatting if it is an array
     * @param value Value to be printed
     */
    private printValue;
    /**
     * Validates and casts a value based on its design type
     * @param value Value to be cast
     * @param designType Constructor of the design type
     * @param isOption Whether the cast is for an option
     */
    cast(value: any, designType: Type<any>, isOption: boolean): any;
    /**
     * Casts to a string
     * @param value Value to be cast
     * @param isOption Whether the cast is for an option
     */
    castString(value: any, isOption: boolean): string;
    /**
     * Casts to a file path
     * @param value Value to be cast
     */
    castFilePath(value: any): FilePath;
    /**
     * Casts to a number that allows decimal places
     * @param value Value to be cast
     * @param isOption Whether the cast is for an option
     */
    castNumber(value: any, isOption: boolean): number;
    /**
     * Casts to a number that does not allow decimal places
     * @param value Value to be cast
     * @param isOption Whether the cast is for an option
     */
    castInt(value: any, isOption: boolean): number;
    /**
     * Casts to a boolean, accepting the strings *'true'* or *'false'* and *'0'* or *'1'*
     * @param value Value to be cast
     * @param isOption Whether the cast is for an option
     */
    castBoolean(value: any, isOption: boolean): boolean;
}