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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 isString = require( '@stdlib/assert/is-string' ).isPrimitive;
var format = require( '@stdlib/string/format' );
// MAIN //
/**
* Converts a string to uppercase.
*
* @param {string} str - string to convert
* @throws {TypeError} must provide a string
* @returns {string} uppercase string
*
* @example
* var str = uppercase( 'bEEp' );
* // returns 'BEEP'
*/
function uppercase( str ) {
if ( !isString( str ) ) {
throw new TypeError( format( 'invalid argument. Must provide a string. Value: `%s`.', str ) );
}
return str.toUpperCase();
}
// EXPORTS //
module.exports = uppercase;
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