/*! sass.js - v0.11.1 (f286436) - built 2019-10-20
  providing libsass 3.6.2 (4da7c4bd)
  via emscripten 1.38.31 (040e49a)
 */

(function (root, factory) {
    "use strict";
    if (typeof define === "function" && define.amd) {
        define([], factory);
    } else if (typeof exports === "object") {
        module.exports = factory();
    } else {
        root.Sass = factory();
    }
}(this, function () {/*global document*/
// identify the path sass.js is located at in case we're loaded by a simple
// <script src="path/to/sass.js"></script>
// this path can be used to identify the location of
// * sass.worker.js from sass.js
// * libsass.js.mem from sass.sync.js
// see https://github.com/medialize/sass.js/pull/32#issuecomment-103142214
// see https://github.com/medialize/sass.js/issues/33
    var SASSJS_RELATIVE_PATH = (function () {
        "use strict";

        // in Node things are rather simple
        var hasDir = typeof __dirname !== "undefined";
        if (hasDir) {
            return __dirname;
        }

        // we can only run this test in the browser,
        // so make sure we actually have a DOM to work with.
        if (typeof document === "undefined" || !document.getElementsByTagName) {
            return null;
        }

        // http://www.2ality.com/2014/05/current-script.html
        var currentScript = document.currentScript || (function () {
            var scripts = document.getElementsByTagName("script");
            return scripts[scripts.length - 1];
        })();

        var path = currentScript && currentScript.src;
        if (!path) {
            return null;
        }

        // [worker] make sure we're not running in some concatenated thing
        if (path.slice(-8) === "/sass.js") {
            return path.slice(0, -8);
        }

        // [sync] make sure we're not running in some concatenated thing
        if (path.slice(-13) === "/sass.sync.js") {
            return path.slice(0, -13);
        }

        return null;
    })() || ".";

    /*global Worker, SASSJS_RELATIVE_PATH*/
    "use strict";

    var noop = function () {
    };
    var slice = [].slice;
    // defined upon first Sass.initialize() call
    var globalWorkerUrl;

    function Sass(workerUrl) {
        if (!workerUrl && !globalWorkerUrl) {
            /*jshint laxbreak:true */
            throw new Error(
                "Sass needs to be initialized with the URL of sass.worker.js - "
                + "either via Sass.setWorkerUrl(url) or by new Sass(url)"
            );
            /*jshint laxbreak:false */
        }

        if (!globalWorkerUrl) {
            globalWorkerUrl = workerUrl;
        }

        // bind all functions
        // we're doing this because we used to have a single hard-wired instance that allowed
        // [].map(Sass.removeFile) and we need to maintain that for now (at least until 1.0.0)
        for (var key in this) {
            if (typeof this[key] === "function") {
                this[key] = this[key].bind(this);
            }
        }

        this._callbacks = {};
        this._worker = new Worker(workerUrl || globalWorkerUrl);
        this._worker.addEventListener("message", this._handleWorkerMessage, false);
    }

    // allow setting the workerUrl before the first Sass instance is initialized,
    // where registering the global workerUrl would've happened automatically
    Sass.setWorkerUrl = function (workerUrl) {
        globalWorkerUrl = workerUrl;
    };

    Sass.style = {
        nested: 0,
        expanded: 1,
        compact: 2,
        compressed: 3
    };

    Sass.comments = {
        "none": 0,
        "default": 1
    };

    Sass.prototype = {
        style: Sass.style,
        comments: Sass.comments,

        destroy: function () {
            this._worker && this._worker.terminate();
            this._worker = null;
            this._callbacks = {};
            this._importer = null;
        },

        _handleWorkerMessage: function (event) {
            if (event.data.command) {
                this[event.data.command](event.data.args);
            }

            this._callbacks[event.data.id] && this._callbacks[event.data.id](event.data.result);
            delete this._callbacks[event.data.id];
        },

        _dispatch: function (options, callback) {
            if (!this._worker) {
                throw new Error("Sass worker has been terminated");
            }

            options.id = "cb" + Date.now() + Math.random();
            this._callbacks[options.id] = callback;
            this._worker.postMessage(options);
        },

        _importerInit: function (args) {
            // importer API done callback pushing results
            // back to the worker
            var done = function done(result) {
                this._worker.postMessage({
                    command: "_importerFinish",
                    args: [result]
                });
            }.bind(this);

            try {
                this._importer(args[0], done);
            } catch (e) {
                done({error: e.message});
                throw e;
            }
        },

        importer: function (importerCallback, callback) {
            if (typeof importerCallback !== "function" && importerCallback !== null) {
                throw new Error("importer callback must either be a function or null");
            }

            // callback is executed in the main EventLoop
            this._importer = importerCallback;
            // tell worker to activate importer callback
            this._worker.postMessage({
                command: "importer",
                args: [Boolean(importerCallback)]
            });

            callback && callback();
        }
    };

    var commands = "writeFile readFile listFiles removeFile clearFiles lazyFiles preloadFiles options compile compileFile";
    commands.split(" ").forEach(function (command) {
        Sass.prototype[command] = function () {
            var callback = slice.call(arguments, -1)[0];
            var args = slice.call(arguments, 0, -1);
            if (typeof callback !== "function") {
                args.push(callback);
                callback = noop;
            }

            this._dispatch({
                command: command,
                args: args
            }, callback);
        };
    });

    // automatically set the workerUrl in case we're loaded by a simple
    // <script src="path/to/sass.js"></script>
    // see https://github.com/medialize/sass.js/pull/32#issuecomment-103142214
    Sass.setWorkerUrl(SASSJS_RELATIVE_PATH + "/sass.worker.js");
    return Sass;
}));