jobiqo-cl/lib/node_modules/react-style-singleton/dist/es2015/singleton.js

[](https://circleci.com/gh/jobiqo/jobiqo-cl)

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

function makeStyleTag() {
    if (!document)
        return null;
    var tag = document.createElement('style');
    tag.type = 'text/css';
    return tag;
}
function injectStyles(tag, css) {
    if (tag.styleSheet) {
        tag.styleSheet.cssText = css;
    }
    else {
        tag.appendChild(document.createTextNode(css));
    }
}
function insertStyleTag(tag) {
    var head = document.head || document.getElementsByTagName('head')[0];
    head.appendChild(tag);
}
var stylesheetSingleton = function () {
    var counter = 0;
    var stylesheet = null;
    return {
        add: function (style) {
            if (counter == 0) {
                if (stylesheet = makeStyleTag()) {
                    injectStyles(stylesheet, style);
                    insertStyleTag(stylesheet);
                }
            }
            counter++;
        },
        remove: function () {
            counter--;
            if (!counter && stylesheet) {
                stylesheet.parentNode && stylesheet.parentNode.removeChild(stylesheet);
                stylesheet = null;
            }
        }
    };
};

exports.stylesheetSingleton = stylesheetSingleton;