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* @license Apache-2.0
*
* Copyright (c) 2018 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 getOwnPropertySymbols = require( '@stdlib/utils/property-symbols' );
var getOwnPropertyNames = require( '@stdlib/utils/property-names' );
var getPrototypeOf = require( '@stdlib/utils/get-prototype-of' );
var Object = require( '@stdlib/object/ctor' );
// FUNCTIONS //
/**
* Returns a boolean indicating if an array contains a provided value.
*
* @private
* @param {Array} arr - array
* @param {*} v - search value
* @returns {boolean} boolean indicating if an array contains a search value
*/
function contains( arr, v ) {
var i;
for ( i = 0; i < arr.length; i++ ) {
if ( arr[ i ] === v ) {
return true;
}
}
return false;
}
// MAIN //
/**
* Returns an array of an object's own and inherited property names and symbols.
*
* @param {*} value - input object
* @returns {Array} a list of own and inherited property names and symbols
*
* @example
* var props = propertiesIn( [] );
* // returns [...]
*/
function propertiesIn( value ) {
var out;
var obj;
var tmp;
var i;
if ( value === null || value === void 0 ) {
return [];
}
// Cast the value to an object:
obj = Object( value );
// Walk the prototype chain collecting all properties...
out = [];
do {
tmp = getOwnPropertyNames( obj );
for ( i = 0; i < tmp.length; i++ ) {
if ( contains( out, tmp[ i ] ) === false ) {
out.push( tmp[ i ] );
}
}
tmp = getOwnPropertySymbols( obj );
for ( i = 0; i < tmp.length; i++ ) {
if ( contains( out, tmp[ i ] ) === false ) {
out.push( tmp[ i ] );
}
}
obj = getPrototypeOf( obj );
} while ( obj );
return out;
}
// EXPORTS //
module.exports = propertiesIn;
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