Filename	Annotation	Percent	Total	Covered	Uncovered
src/workarounds.js	@flow	97 %	41	40	1

/*
 * Part of Pleiar.no - a collection of tools for nurses
 *
 * Copyright (C) Eskild Hustvedt 2017-2018
 * Copyright (C) Fagforbundet 2019
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

// @flow

/**
 * Applies workarounds for Microsoft browsers. Sets the `ms-workarounds` and
 * either `ms-edge` or `ms-ie` classes on the body (for applying CSS
 * workarounds) and polyfills a missing Number.parseFloat in IE.
*/
function applyBrowserWorkaroundsIfNeeded ()
{
    const body = document.body;
    if(body === null)
    {
        return;
    }
    // Work around bugs in IE/Edge.
    // We add classes to the body and then work around the problems with CSS
    if (/(Edge|Trident)/.test(navigator.userAgent))
    {
        body.classList.add('ms-workarounds');
        if (/Edge/.test(navigator.userAgent))
        {
            body.classList.add('ms-edge');
            body.classList.add('ms-edge-legacy');
        }
        else
        {
            body.classList.add('ms-ie');
            // Polyfill missing Number.parseFloat in IE
            // $FlowIssue[cannot-write] - We're not actually suppose to be able to modify Number.parseFloat (but we need to for IE)
            Number.parseFloat = parseFloat;
        }
    }
}

export { applyBrowserWorkaroundsIfNeeded };

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