flow like the river

VISUALIZACION/node_modules/htmlnano/lib/htmlnano.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+
+var _objectAssign = require('object-assign');
+
+var _objectAssign2 = _interopRequireDefault(_objectAssign);
+
+var _posthtml = require('posthtml');
+
+var _posthtml2 = _interopRequireDefault(_posthtml);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+// Array of all enabled modules
+var defaultOptions = {
+    removeComments: 'safe',
+    removeEmptyAttributes: true,
+    removeRedundantAttributes: false,
+    collapseWhitespace: 'conservative',
+    collapseBooleanAttributes: true,
+    mergeStyles: true,
+    mergeScripts: true,
+    minifyCss: {
+        safe: true
+    },
+    minifyJs: {},
+    minifyJson: {},
+    minifySvg: {},
+    custom: []
+};
+
+function htmlnano() {
+    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+
+    return function minifier(tree) {
+        options = (0, _objectAssign2.default)({}, defaultOptions, options);
+        var promise = Promise.resolve(tree);
+        var _iteratorNormalCompletion = true;
+        var _didIteratorError = false;
+        var _iteratorError = undefined;
+
+        try {
+            var _loop = function _loop() {
+                var moduleName = _step.value;
+
+                if (!options[moduleName]) {
+                    // The module is disabled
+                    return 'continue';
+                }
+
+                if (defaultOptions[moduleName] === undefined) {
+                    throw new Error('Module "' + moduleName + '" is not defined');
+                }
+
+                var module = require('./modules/' + moduleName);
+                promise = promise.then(function (tree) {
+                    return module.default(tree, options, options[moduleName]);
+                });
+            };
+
+            for (var _iterator = Object.keys(options)[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+                var _ret = _loop();
+
+                if (_ret === 'continue') continue;
+            }
+        } catch (err) {
+            _didIteratorError = true;
+            _iteratorError = err;
+        } finally {
+            try {
+                if (!_iteratorNormalCompletion && _iterator.return) {
+                    _iterator.return();
+                }
+            } finally {
+                if (_didIteratorError) {
+                    throw _iteratorError;
+                }
+            }
+        }
+
+        return promise;
+    };
+}
+
+htmlnano.process = function (html, options) {
+    return (0, _posthtml2.default)([htmlnano(options)]).process(html);
+};
+
+htmlnano.defaultOptions = defaultOptions;
+
+exports.default = htmlnano;