import { type MutableStringMappers } from "./internal.mjs";
/**
 * Updates the configuration used by new validators.
 */
interface ConfigurationUpdater {
    /**
     * Returns `true` if error messages may include a diff that compares actual and expected values.
     *
     * @returns `true` by default
     */
    allowDiff(): boolean;
    /**
     * Specifies that error messages may include a diff that compares actual and expected values.
     *
     * @param allowDiff - `true` by default
     * @returns this
     */
    allowDiff(allowDiff: boolean): ConfigurationUpdater;
    allowDiff(mayDiff?: boolean): boolean | ConfigurationUpdater;
    /**
     * Returns the configuration used to map contextual values to a String. Supports common types such as
     * arrays or numbers.
     *
     * @returns a function that takes an object and returns the `string` representation of the object
     */
    stringMappers(): MutableStringMappers;
    /**
     * Returns `true` if error stack traces should reference the code that triggers a validation
     * failure. When set to `false`, the error type remains unchanged, but the stack trace location is
     * undefined. Users who only plan to {@link ValidationFailures.getMessages|list of failure messages}
     * instead of errors may experience a performance improvement if this value is set to `false`.
     *
     * @returns `true` if errors must be recorded when a validation failure occurs
     */
    recordStacktrace(): boolean;
    /**
     * Specifies whether error stack traces should reference the code that triggers a validation failure.
     * When set to `false`, the error type remains unchanged, but the stack trace location is
     * undefined. Users who only plan to {@link ValidationFailures.getMessages|list of failure messages}
     * instead of errors may experience a performance improvement if this value is set to `false`.
     *
     * @param recordStacktrace - `true` if errors must be recorded when a validation failure occurs
     * @returns this
     */
    recordStacktrace(recordStacktrace: boolean): ConfigurationUpdater;
    recordStacktrace(recordStacktrace?: boolean): boolean | ConfigurationUpdater;
    /**
     * Returns a function that transforms the validation error before it is thrown or returned. If the function
     * returns `undefined` or `null`, it’s treated as if it returned the input error.
     *
     * @returns a function that transforms the validation error
     */
    errorTransformer(): (error: Error) => Error;
    /**
     * Sets a function that transforms the validation error before it is thrown or returned. If the function
     * returns `undefined` or `null`, it’s treated as if it returned the input error.
     *
     * @param errorTransformer - a function that transforms the validation error before it is thrown or returned
     * @returns this
     */
    errorTransformer(errorTransformer: (error: Error) => Error): ConfigurationUpdater;
    errorTransformer(errorTransformer?: (error: Error) => Error): ((error: Error) => Error) | ConfigurationUpdater;
    /**
     * Applies the changes to the configuration.
     */
    close(): void;
}
export type { ConfigurationUpdater };