import * as t from "io-ts";
import { AutoRc } from "./types";
import { AsyncSeriesBailHook } from "tapable";
interface ConfigOptionError {
    /** Key path in config to misconfigured option */
    path: string;
    /** The expected type */
    expectedType: string;
    /** The actual value */
    value: any;
}
export declare type ConfigError = string | ConfigOptionError;
/** Format and error as a string */
export declare function formatError(error: ConfigError): string;
export declare type ValidatePluginHook = AsyncSeriesBailHook<[string, any], void | ConfigError[]>;
/** Ensure plugins validation is correct. */
export declare function validatePlugins(validatePlugin: ValidatePluginHook, rc: AutoRc): Promise<ConfigError[]>;
/** Create a function to validation a configuration based on the configDeceleration  */
export declare const validateIoConfiguration: (name: string, configDeceleration: t.Any | t.HasProps) => (rc: unknown) => Promise<Array<ConfigError | string>>;
export declare const validateAutoRc: (rc: unknown) => Promise<Array<ConfigError | string>>;
/** Validate a plugin's configuration. */
export declare function validatePluginConfiguration(name: string, pluginDefinition: t.Any | t.HasProps, providedOptions: unknown): Promise<(string | {
    path: string;
    /** The expected type */
    expectedType: string;
    /** The actual value */
    value: any;
})[]>;
export {};
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