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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 slice = require( '@stdlib/array/base/fancy-slice' );
var errMessage = require( './error_message.js' );
var prop2slice = require( './prop2slice.js' );
// MAIN //
/**
* Returns a copy.
*
* @private
* @param {Object} target - target object
* @param {string} property - property name
* @param {Object} ctx - context object
* @param {Function} ctx.postGetArray - function to process a retrieved array
* @param {boolean} ctx.strict - boolean indicating whether to enforce strict bounds checking
* @throws {Error} invalid slice operation
* @throws {RangeError} slice exceeds array bounds
* @returns {(Collection|void)} result
*/
function getSlice( target, property, ctx ) {
var s = prop2slice( target, property, ctx.strict );
if ( s === null ) {
// Ensure consistency with normal array behavior by returning `undefined` for any "unrecognized" property name:
return;
}
try {
return ctx.postGetArray( slice( target, s, ctx.strict ) );
} catch ( err ) {
// In principle, we should only error when in "strict" mode and a slice exceeds array bounds...
throw new err.constructor( errMessage( err.message ) );
}
}
// EXPORTS //
module.exports = getSlice;
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