@types/empower/index.d.ts

// Type definitions for empower 1.2
// Project: https://github.com/power-assert-js/empower
// Definitions by: vvakame <https://github.com/vvakame>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 3.5

import { Options as CoreOptions } from 'empower-core';
import { Formatter } from 'power-assert-formatter';

/**
 * Enhances Power Assert feature to assert function/object.
 *
 * @param originalAssert An instance of standard `assert` function or any assert-like object to enhance.
 * @param formatter A formatter function created by power-assert-formatter.
 * @param options Configuration options. If not passed, default options will be used.
 * @return Enhanced assert function/object.
 */
declare function empower<T>(originalAssert: T, formatter: Formatter, options?: empower.Options): T;

declare namespace empower {
    // The omitted options can be provided, but they will be always overridden.
    type Options = Omit<CoreOptions, 'modifyMessageBeforeAssert' | 'onError'> & {
        /**
         * If truthy, modify message property of `AssertionError` on rethrow.
         *
         * @default false
         */
        modifyMessageOnRethrow?: boolean | undefined;
        /**
         * If truthy, add `powerAssertContext` property to `AssertionError` on rethrow.
         *
         * @default false
         */
        saveContextOnRethrow?: boolean | undefined;
    };

    /**
     * Returns default options object for `empower` function.
     */
    function defaultOptions(): Required<Options>;
}

export = empower;