@stdlib/utils/every-in-by/lib/main.js

Standard utilities.

/**
* @license Apache-2.0
*
* Copyright (c) 2024 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.
*/

'use strict';

// MODULES //

var isFunction = require( '@stdlib/assert/is-function' );
var format = require( '@stdlib/string/format' );


// MAIN //

/**
* Tests whether all properties (own and inherited) of an object pass a test implemented by a predicate function.
*
* @param {Object} obj - input object
* @param {Function} predicate - test function
* @param {*} [thisArg] - execution context
* @throws {TypeError} first argument must be an object
* @throws {TypeError} second argument must be a function
* @returns {boolean} boolean indicating whether all elements pass a test
*
* @example
* function isPositive( v ) {
*   return ( v > 0 );
* }
*
* var o = { a: 1, b: 2, c: 3 };
*
* var bool = everyInBy( o, isPositive );
* // returns true
*/
function everyInBy( obj, predicate, thisArg ) {
	var key;
	if (typeof obj !== 'object' || obj === null) {
		throw new TypeError( format( 'invalid argument. First argument must be an object. Value: `%s`.', obj ) );
	}
	if ( !isFunction( predicate ) ) {
		throw new TypeError( format( 'invalid argument. Second argument must be a function. Value: `%s`.', predicate ) );
	}

	for ( key in obj ) {
		if ( !predicate.call( thisArg, obj[ key ], key, obj ) ) {
			return false;
		}
	}

	return true;
}


// EXPORTS //

module.exports = everyInBy;