/**
* Tom Select v2.0.3
* Licensed under the Apache License, Version 2.0 (the "License");
*/

(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
	typeof define === 'function' && define.amd ? define(factory) :
	(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.input_autogrow = factory());
})(this, (function () { 'use strict';

	/**
	 * Converts a scalar to its best string representation
	 * for hash keys and HTML attribute values.
	 *
	 * Transformations:
	 *   'str'     -> 'str'
	 *   null      -> ''
	 *   undefined -> ''
	 *   true      -> '1'
	 *   false     -> '0'
	 *   0         -> '0'
	 *   1         -> '1'
	 *
	 */
	/**
	 * Prevent default
	 *
	 */

	const addEvent = (target, type, callback, options) => {
	  target.addEventListener(type, callback, options);
	};

	/**
	 * Plugin: "input_autogrow" (Tom Select)
	 *
	 * 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.
	 *
	 */
	function plugin () {
	  var self = this;
	  self.on('initialize', () => {
	    var test_input = document.createElement('span');
	    var control = self.control_input;
	    test_input.style.cssText = 'position:absolute; top:-99999px; left:-99999px; width:auto; padding:0; white-space:pre; ';
	    self.wrapper.appendChild(test_input);
	    var transfer_styles = ['letterSpacing', 'fontSize', 'fontFamily', 'fontWeight', 'textTransform'];

	    for (const style_name of transfer_styles) {
	      // @ts-ignore TS7015 https://stackoverflow.com/a/50506154/697576
	      test_input.style[style_name] = control.style[style_name];
	    }
	    /**
	     * Set the control width
	     *
	     */


	    var resize = () => {
	      if (self.items.length > 0) {
	        test_input.textContent = control.value;
	        control.style.width = test_input.clientWidth + 'px';
	      } else {
	        control.style.width = '';
	      }
	    };

	    resize();
	    self.on('update item_add item_remove', resize);
	    addEvent(control, 'input', resize);
	    addEvent(control, 'keyup', resize);
	    addEvent(control, 'blur', resize);
	    addEvent(control, 'update', resize);
	  });
	}

	return plugin;

}));
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