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/*! Copyright (c) 2018 Jed Watson. Licensed under the MIT License (MIT), see http://jedwatson.github.io/classnames */ /*! * The buffer module from node.js, for the browser. * * @author Feross Aboukhadijeh <https://feross.org> * @license MIT */ /*! * css-vars-ponyfill * v2.4.8 * https://jhildenbiddle.github.io/css-vars-ponyfill/ * (c) 2018-2022 John Hildenbiddle <http://hildenbiddle.com> * MIT license */ /*! * get-css-data * v2.1.0 * https://github.com/jhildenbiddle/get-css-data * (c) 2018-2022 John Hildenbiddle <http://hildenbiddle.com> * MIT license */ /*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */ /*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */ /** * Fetches, parses, and transforms CSS custom properties from specified * <style> and <link> elements into static values, then appends a new <style> * element with static values to the DOM to provide CSS custom property * compatibility for legacy browsers. Also provides a single interface for * live updates of runtime values in both modern and legacy browsers. * * @preserve * @param {object} [options] Options object * @param {object} [options.rootElement=document] Root element to traverse for * <link> and <style> nodes * @param {boolean} [options.shadowDOM=false] Determines if shadow DOM <link> * and <style> nodes will be processed. * @param {string} [options.include="style,link[rel=stylesheet]"] CSS selector * matching <link re="stylesheet"> and <style> nodes to * process * @param {string} [options.exclude] CSS selector matching <link * rel="stylehseet"> and <style> nodes to exclude from those * matches by options.include * @param {object} [options.variables] A map of custom property name/value * pairs. Property names can omit or include the leading * double-hyphen (—), and values specified will override * previous values * @param {boolean} [options.onlyLegacy=true] Determines if the ponyfill will * only generate legacy-compatible CSS in browsers that lack * native support (i.e., legacy browsers) * @param {boolean} [options.preserveStatic=true] Determines if CSS * declarations that do not reference a custom property will * be preserved in the transformed CSS * @param {boolean} [options.preserveVars=false] Determines if CSS custom * property declarations will be preserved in the transformed * CSS * @param {boolean} [options.silent=false] Determines if warning and error * messages will be displayed on the console * @param {boolean} [options.updateDOM=true] Determines if the ponyfill will * update the DOM after processing CSS custom properties * @param {boolean} [options.updateURLs=true] Determines if relative url() * paths will be converted to absolute urls in external CSS * @param {boolean} [options.watch=false] Determines if a MutationObserver will * be created that will execute the ponyfill when a <link> or * <style> DOM mutation is observed * @param {function} [options.onBeforeSend] Callback before XHR is sent. Passes * 1) the XHR object, 2) source node reference, and 3) the * source URL as arguments * @param {function} [options.onError] Callback after a CSS parsing error has * occurred or an XHR request has failed. Passes 1) an error * message, and 2) source node reference, 3) xhr, and 4 url as * arguments. * @param {function} [options.onWarning] Callback after each CSS parsing warning * has occurred. Passes 1) a warning message as an argument. * @param {function} [options.onSuccess] Callback after CSS data has been * collected from each node and before CSS custom properties * have been transformed. Allows modifying the CSS data before * it is transformed by returning any string value (or false * to skip). Passes 1) CSS text, 2) source node reference, and * 3) the source URL as arguments. * @param {function} [options.onComplete] Callback after all CSS has been * processed, legacy-compatible CSS has been generated, and * (optionally) the DOM has been updated. Passes 1) a CSS * string with CSS variable values resolved, 2) an array of * output <style> node references that have been appended to * the DOM, 3) an object containing all custom properies names * and values, and 4) the ponyfill execution time in * milliseconds. * @param {function} [options.onFinally] Callback in modern and legacy browsers * after the ponyfill has finished all tasks. Passes 1) a * boolean indicating if the last ponyfill call resulted in a * style change, 2) a boolean indicating if the current * browser provides native support for CSS custom properties, * and 3) the ponyfill execution time in milliseconds. * @example * * cssVars({ * rootElement : document, * shadowDOM : false, * include : 'style,link[rel="stylesheet"]', * exclude : '', * variables : {}, * onlyLegacy : true, * preserveStatic: true, * preserveVars : false, * silent : false, * updateDOM : true, * updateURLs : true, * watch : false, * onBeforeSend(xhr, node, url) {}, * onError(message, node, xhr, url) {}, * onWarning(message) {}, * onSuccess(cssText, node, url) {}, * onComplete(cssText, styleNode, cssVariables, benchmark) {}, * onFinally(hasChanged, hasNativeSupport, benchmark) * }); */ /** * Gets CSS data from <style> and <link> nodes (including @imports), then * returns data in order processed by DOM. Allows specifying nodes to * include/exclude and filtering CSS data using RegEx. * * @preserve * @param {object} [options] The options object * @param {object} [options.rootElement=document] Root element to traverse for * <link> and <style> nodes. * @param {string} [options.include] CSS selector matching <link> and <style> * nodes to include * @param {string} [options.exclude] CSS selector matching <link> and <style> * nodes to exclude * @param {object} [options.filter] Regular expression used to filter node CSS * data. Each block of CSS data is tested against the filter, * and only matching data is included. * @param {boolean} [options.skipDisabled=true] Determines if disabled * stylesheets will be skipped while collecting CSS data. * @param {boolean} [options.useCSSOM=false] Determines if CSS data will be * collected from a stylesheet's runtime values instead of its * text content. This is required to get accurate CSS data * when a stylesheet has been modified using the deleteRule() * or insertRule() methods because these modifications will * not be reflected in the stylesheet's text content. * @param {function} [options.onBeforeSend] Callback before XHR is sent. Passes * 1) the XHR object, 2) source node reference, and 3) the * source URL as arguments. * @param {function} [options.onSuccess] Callback on each CSS node read. Passes * 1) CSS text, 2) source node reference, and 3) the source * URL as arguments. * @param {function} [options.onError] Callback on each error. Passes 1) the XHR * object for inspection, 2) soure node reference, and 3) the * source URL that failed (either a <link> href or an @import) * as arguments * @param {function} [options.onComplete] Callback after all nodes have been * processed. Passes 1) concatenated CSS text, 2) an array of * CSS text in DOM order, and 3) an array of nodes in DOM * order as arguments. * * @example * * getCssData({ * rootElement : document, * include : 'style,link[rel="stylesheet"]', * exclude : '[href="skip.css"]', * filter : /red/, * skipDisabled: true, * useCSSOM : false, * onBeforeSend(xhr, node, url) { * // ... * } * onSuccess(cssText, node, url) { * // ... * } * onError(xhr, node, url) { * // ... * }, * onComplete(cssText, cssArray, nodeArray) { * // ... * } * }); */