@iframe-resizer/parent/index.cjs.js

Keep iframes sized to their content.

/*!
 *  @preserve
 *  
 *  @module      iframe-resizer/parent 5.5.1 (cjs) - 2025-08-01
 *
 *  @license     GPL-3.0 for non-commercial use only.
 *               For commercial use, you must purchase a license from
 *               https://iframe-resizer.com/pricing
 * 
 *  @description Keep same and cross domain iFrames sized to their content 
 *
 *  @author      David J. Bradshaw <info@iframe-resizer.com>
 * 
 *  @see         {@link https://iframe-resizer.com}
 * 
 *  @copyright  (c) 2013 - 2025, David J. Bradshaw. All rights reserved.
 */


'use strict';

const connectResizer = require('@iframe-resizer/core');

const LABEL = 'iframeResizer';

const id = `[${LABEL}] `;

function createIframeResize() {
  function setup(element) {
    switch (true) {
      case !element:
        throw new TypeError(`${id}iframe is not defined`)

      case !element.tagName:
        throw new TypeError(`${id}Not a valid DOM element`)

      case element.tagName.toUpperCase() !== 'IFRAME':
        throw new TypeError(
          `${id}Expected <IFRAME> tag, found <${element.tagName}>`,
        )

      default:
        connectWithOptions(element);
        iFrames.push(element);
    }
  }

  let connectWithOptions;
  let iFrames;

  return function (options, target) {
    if (typeof window === 'undefined') return [] // don't run for server side render

    connectWithOptions = connectResizer(options);
    iFrames = []; // Only return iFrames passed in on this call

    switch (typeof target) {
      case 'undefined':
      case 'string':
        document.querySelectorAll(target || 'iframe').forEach(setup);
        break

      case 'object':
        setup(target);
        break

      default:
        throw new TypeError(`${id}Unexpected data type (${typeof target})`)
    }

    return Object.freeze(iFrames)
  }
}

const esm = createIframeResize();

module.exports = esm;