| [6a3a178] | 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | var tslib_1 = require("tslib");
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| 4 | var utils = tslib_1.__importStar(require("./utils"));
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| 5 | exports.default = {
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| 6 | createCSS: function (document, styles, sheet) {
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| 7 | // Strip the query-string
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| 8 | var href = sheet.href || '';
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| 9 | // If there is no title set, use the filename, minus the extension
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| 10 | var id = "less:" + (sheet.title || utils.extractId(href));
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| 11 | // If this has already been inserted into the DOM, we may need to replace it
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| 12 | var oldStyleNode = document.getElementById(id);
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| 13 | var keepOldStyleNode = false;
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| 14 | // Create a new stylesheet node for insertion or (if necessary) replacement
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| 15 | var styleNode = document.createElement('style');
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| 16 | styleNode.setAttribute('type', 'text/css');
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| 17 | if (sheet.media) {
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| 18 | styleNode.setAttribute('media', sheet.media);
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| 19 | }
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| 20 | styleNode.id = id;
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| 21 | if (!styleNode.styleSheet) {
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| 22 | styleNode.appendChild(document.createTextNode(styles));
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| 23 | // If new contents match contents of oldStyleNode, don't replace oldStyleNode
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| 24 | keepOldStyleNode = (oldStyleNode !== null && oldStyleNode.childNodes.length > 0 && styleNode.childNodes.length > 0 &&
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| 25 | oldStyleNode.firstChild.nodeValue === styleNode.firstChild.nodeValue);
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| 26 | }
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| 27 | var head = document.getElementsByTagName('head')[0];
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| 28 | // If there is no oldStyleNode, just append; otherwise, only append if we need
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| 29 | // to replace oldStyleNode with an updated stylesheet
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| 30 | if (oldStyleNode === null || keepOldStyleNode === false) {
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| 31 | var nextEl = sheet && sheet.nextSibling || null;
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| 32 | if (nextEl) {
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| 33 | nextEl.parentNode.insertBefore(styleNode, nextEl);
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| 34 | }
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| 35 | else {
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| 36 | head.appendChild(styleNode);
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| 37 | }
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| 38 | }
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| 39 | if (oldStyleNode && keepOldStyleNode === false) {
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| 40 | oldStyleNode.parentNode.removeChild(oldStyleNode);
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| 41 | }
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| 42 | // For IE.
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| 43 | // This needs to happen *after* the style element is added to the DOM, otherwise IE 7 and 8 may crash.
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| 44 | // See http://social.msdn.microsoft.com/Forums/en-US/7e081b65-878a-4c22-8e68-c10d39c2ed32/internet-explorer-crashes-appending-style-element-to-head
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| 45 | if (styleNode.styleSheet) {
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| 46 | try {
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| 47 | styleNode.styleSheet.cssText = styles;
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| 48 | }
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| 49 | catch (e) {
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| 50 | throw new Error('Couldn\'t reassign styleSheet.cssText.');
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| 51 | }
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| 52 | }
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| 53 | },
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| 54 | currentScript: function (window) {
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| 55 | var document = window.document;
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| 56 | return document.currentScript || (function () {
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| 57 | var scripts = document.getElementsByTagName('script');
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| 58 | return scripts[scripts.length - 1];
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| 59 | })();
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| 60 | }
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| 61 | };
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| 62 | //# sourceMappingURL=browser.js.map |
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