84 lines
2.7 KiB
JavaScript
84 lines
2.7 KiB
JavaScript
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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var isArray = require( '@stdlib/assert/is-array' );
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var isCollection = require( '@stdlib/assert/is-collection' );
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var isTypedArrayLike = require( '@stdlib/assert/is-typed-array-like' );
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var isInteger = require( '@stdlib/assert/is-integer' );
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var appendArray = require( './append_array.js' );
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var appendObject = require( './append_object.js' );
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var appendTypedArray = require( './append_typed_array.js' );
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// MAIN //
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/**
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* Adds elements from one collection to the end of another collection.
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*
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* @param {Collection} collection1 - collection
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* @param {Collection} collection2 - collection containing elements to add
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* @throws {TypeError} first argument must be either an array, typed array, or an array-like object
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* @throws {TypeError} second argument must be an array-like object
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* @returns {Collection} updated collection
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*
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* @example
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* var arr = [ 1.0, 2.0, 3.0, 4.0, 5.0 ];
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*
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* arr = append( arr, [ 6.0, 7.0 ] );
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* // returns [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 ]
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*
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* @example
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* var arr = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
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* // returns <Float64Array>[ 1.0, 2.0, 3.0, 4.0, 5.0 ]
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*
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* arr = append( arr, [ 6.0, 7.0 ] );
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* // returns <Float64Array>[ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 ]
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*/
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function append( collection1, collection2 ) {
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if ( !isCollection( collection2 ) ) {
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throw new TypeError( 'invalid argument. Second argument must be an array-like object. Value: `'+collection2+'`.' );
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}
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if ( isArray( collection1 ) ) {
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return appendArray( collection1, collection2 );
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}
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// Check for a typed-array-like object, as verifying actual typed arrays is expensive...
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if ( isTypedArrayLike( collection1 ) ) {
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return appendTypedArray( collection1, collection2 );
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}
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// Check for an array-like object...
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if (
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collection1 !== null &&
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typeof collection1 === 'object' &&
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typeof collection1.length === 'number' &&
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isInteger( collection1.length ) &&
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collection1.length >= 0
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) {
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return appendObject( collection1, collection2 );
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}
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throw new TypeError( 'invalid argument. First argument must be either an Array, Typed Array, or an array-like Object. Value: `'+collection1+'`.' );
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}
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// EXPORTS //
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module.exports = append;
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