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* @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 isCollection = require( '@stdlib/assert/is-collection' );
var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
var base = require( '@stdlib/array/base/slice' );
var format = require( '@stdlib/string/format' );
// MAIN //
/**
* Returns a shallow copy of a portion of an array.
*
* @param {Collection} x - input array
* @param {integer} [start=0] - starting index (inclusive)
* @param {integer} [end=x.length] - ending index (exclusive)
* @throws {TypeError} first argument must be a collection
* @throws {TypeError} second argument must be an integer
* @throws {TypeError} third argument must be an integer
* @returns {Collection} output array
*
* @example
* var x = [ 1, 2, 3, 4 ];
*
* var out = slice( x, 1, 3 );
* // returns [ 2, 3 ]
*
* var bool = ( out === x );
* // returns false
*
* @example
* var Int32Array = require( '@stdlib/array/int32' );
*
* var x = new Int32Array( [ 1, 2, 3, 4 ] );
*
* var out = slice( x, 1, 3 );
* // returns <Int32Array>[ 2, 3 ]
*
* var bool = ( out === x );
* // returns false
*/
function slice( x ) {
var start;
var end;
if ( !isCollection( x ) ) {
throw new TypeError( format( 'invalid argument. First argument must be an array-like object. Value: `%s`.', x ) );
}
if ( arguments.length > 1 ) {
start = arguments[ 1 ];
if ( !isInteger( start ) ) {
throw new TypeError( format( 'invalid argument. Second argument must be an integer. Value: `%s`.', start ) );
}
if ( arguments.length > 2 ) {
end = arguments[ 2 ];
if ( !isInteger( end ) ) {
throw new TypeError( format( 'invalid argument. Third argument must be an integer. Value: `%s`.', end ) );
}
} else {
end = x.length;
}
} else {
start = 0;
end = x.length;
}
return base( x, start, end );
}
// EXPORTS //
module.exports = slice;
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