@stdlib/utils/for-in/docs/types/index.d.ts

Standard utilities.

/*
* @license Apache-2.0
*
* Copyright (c) 2019 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

// TypeScript Version: 4.1

/**
* Invokes a function once for each own and inherited enumerable property of an object.
*
* ## Notes
*
* -   When invoked, the function is provided three arguments:
*
*     -   `value`: object property value
*     -   `key`: object property
*     -   `obj`: the input object
*
* -   To terminate iteration before visiting all properties, the provided function must explicitly return `false`.
*
* -   Iteration order is **not** guaranteed.
*
*
* @param obj - input object
* @param fcn - function to invoke
* @param thisArg - execution context
* @returns obj - input object
*
* @example
* function log( v, key ) {
*     console.log( '%s: %d', key, v );
* }
*
* function Foo() {
*     this.a = 1;
*     this.b = 2;
*     return this;
* }
*
* Foo.prototype.c = 3;
* Foo.prototype.d = 4;
*
* var obj = new Foo();
*
* forIn( obj, log );
*/
declare function forIn( obj: any, fcn: Function, thisArg?: any ): any;


// EXPORTS //

export = forIn;