@geogirafe/lib-geoportal/tools/export/download.js

GeoGirafe is a flexible application to build online geoportals.

// SPDX-License-Identifier: Apache-2.0
import { isSafari } from '../utils/utils.js';
import { saveAs } from 'file-saver';
/**
 * A function to start a download for a file.
 *
 * @param content The content of the file to download.
 * @param fileName The name of the file to download.
 * @param opt_fileType The type of the file to download.
 */
export const download = (content, fileName, opt_fileType) => {
    // Safari does not properly work with FileSaver. Using the the type 'text/plain'
    // makes it a least possible to show the file content so that users can
    // do a manual download with "Save as".
    // See also: https://github.com/eligrey/FileSaver.js/issues/12
    const fileType = opt_fileType !== undefined && !isSafari() ? opt_fileType : 'text/plain;charset=utf-8';
    const blob = new Blob([
        new Uint8Array([0xef, 0xbb, 0xbf]), // UTF-8 BOM
        content
    ], { type: fileType });
    saveAs(blob, fileName);
};