@stdlib/utils/none-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 isObject = require( '@stdlib/assert/is-object' );
var format = require( '@stdlib/string/format' );


// MAIN //

/**
* Tests whether every property of a provided object does not satisfy 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 fail a test
*
* @example
* function isPositive( v ) {
*     return ( v > 0 );
* };
*
* var obj = { 'a' : -1, 'b' : -2, 'c' : -3, 'd' : -4};
*
* var bool = noneInBy( obj, isPositive );
* // returns true
*/
function noneInBy( obj, predicate, thisArg ) {
	var key;

	if ( !isObject( obj ) ) {
		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 = noneInBy;