58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
/**
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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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// MAIN //
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/**
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* Returns a function to flatten an array.
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*
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* @private
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* @param {Function} flatten - flatten function
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* @returns {Function} wrapped flatten function
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*/
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function wrap( flatten ) {
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return flattenArray;
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/**
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* Flattens an array.
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*
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* @private
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* @param {Array} arr - array to flatten
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* @throws {TypeError} must provide an array
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* @returns {Array} flattened array
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*/
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function flattenArray( arr ) {
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if ( !isArray( arr ) ) {
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throw new TypeError( 'invalid argument. Must provide an array. Value: `' + arr + '`.' );
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}
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return flatten( arr );
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}
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}
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// EXPORTS //
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module.exports = wrap;
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