flow like the river

VISUALIZACION/node_modules/htmlnano/lib/modules/collapseBooleanAttributes.js

@@ -0,0 +1,48 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = collapseBooleanAttributes;
+// Source: https://github.com/kangax/html-minifier/issues/63
+var booleanAttributes = ['allowfullscreen', 'async', 'autofocus', 'autoplay', 'checked', 'compact', 'controls', 'declare', 'default', 'defaultchecked', 'defaultmuted', 'defaultselected', 'defer', 'disabled', 'enabled', 'formnovalidate', 'hidden', 'indeterminate', 'inert', 'ismap', 'itemscope', 'loop', 'multiple', 'muted', 'nohref', 'noresize', 'noshade', 'novalidate', 'nowrap', 'open', 'pauseonexit', 'readonly', 'required', 'reversed', 'scoped', 'seamless', 'selected', 'sortable', 'truespeed', 'typemustmatch', 'visible'];
+
+var booleanAttributesIndex = {};
+booleanAttributes.forEach(function (attributeName) {
+    return booleanAttributesIndex[attributeName] = true;
+});
+
+function collapseBooleanAttributes(tree) {
+    tree.match({ attrs: true }, function (node) {
+        var _iteratorNormalCompletion = true;
+        var _didIteratorError = false;
+        var _iteratorError = undefined;
+
+        try {
+            for (var _iterator = Object.keys(node.attrs)[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+                var attrName = _step.value;
+
+                if (booleanAttributesIndex[attrName]) {
+                    node.attrs[attrName] = true;
+                }
+            }
+        } catch (err) {
+            _didIteratorError = true;
+            _iteratorError = err;
+        } finally {
+            try {
+                if (!_iteratorNormalCompletion && _iterator.return) {
+                    _iterator.return();
+                }
+            } finally {
+                if (_didIteratorError) {
+                    throw _iteratorError;
+                }
+            }
+        }
+
+        return node;
+    });
+
+    return tree;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/collapseWhitespace.js

@@ -0,0 +1,43 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = collapseWhitespace;
+
+var _helpers = require('../helpers');
+
+var noWhitespaceCollapseElements = ['script', 'style', 'pre', 'textarea'];
+
+/** Collapses redundant whitespaces */
+function collapseWhitespace(tree, options, collapseType) {
+    if (collapseType !== 'conservative' && collapseType !== 'all') {
+        collapseType = 'conservative';
+    }
+
+    tree.forEach(function (node, index) {
+        if (typeof node === 'string' && !(0, _helpers.isComment)(node)) {
+            node = collapseRedundantWhitespaces(node, collapseType, tree.walk !== undefined);
+        }
+
+        var isAllowCollapseWhitespace = noWhitespaceCollapseElements.indexOf(node.tag) === -1;
+        if (node.content && node.content.length && isAllowCollapseWhitespace) {
+            node.content = collapseWhitespace(node.content, options, collapseType);
+        }
+
+        tree[index] = node;
+    });
+
+    return tree;
+}
+
+function collapseRedundantWhitespaces(text, collapseType) {
+    var isTopLevel = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
+
+    text = text && text.length > 0 ? text.replace(/\s+/g, ' ') : '';
+    if (collapseType === 'all' || isTopLevel) {
+        text = text.trim();
+    }
+
+    return text;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/custom.js

@@ -0,0 +1,22 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = custom;
+/** Meta-module that runs custom modules  */
+function custom(tree, options, customModules) {
+    if (!customModules) {
+        return tree;
+    }
+
+    if (!Array.isArray(customModules)) {
+        customModules = [customModules];
+    }
+
+    customModules.forEach(function (customModule) {
+        tree = customModule(tree, options);
+    });
+
+    return tree;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/mergeScripts.js

@@ -0,0 +1,80 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = mergeScripts;
+/* Merge multiple <script> into one */
+function mergeScripts(tree) {
+    var scriptNodesIndex = {};
+
+    tree.match({ tag: 'script' }, function (node) {
+        var nodeAttrs = node.attrs || {};
+        if (nodeAttrs.src) {
+            return node;
+        }
+
+        var scriptType = nodeAttrs.type || 'text/javascript';
+        if (scriptType !== 'text/javascript' && scriptType !== 'application/javascript') {
+            return node;
+        }
+
+        var scriptKey = JSON.stringify({
+            id: nodeAttrs.id,
+            class: nodeAttrs.class,
+            type: scriptType,
+            defer: nodeAttrs.defer !== undefined,
+            async: nodeAttrs.async !== undefined
+        });
+        if (!scriptNodesIndex[scriptKey]) {
+            scriptNodesIndex[scriptKey] = [];
+        }
+
+        scriptNodesIndex[scriptKey].push(node);
+        return node;
+    });
+
+    var _iteratorNormalCompletion = true;
+    var _didIteratorError = false;
+    var _iteratorError = undefined;
+
+    try {
+        var _loop = function _loop() {
+            var scriptKey = _step.value;
+
+            var scriptNodes = scriptNodesIndex[scriptKey];
+            var lastScriptNode = scriptNodes.pop();
+            scriptNodes.reverse().forEach(function (scriptNode) {
+                var scriptContent = (scriptNode.content || []).join(' ');
+                scriptContent = scriptContent.trim();
+                if (scriptContent.slice(-1) !== ';') {
+                    scriptContent += ';';
+                }
+
+                lastScriptNode.content.unshift(scriptContent);
+
+                scriptNode.tag = false;
+                scriptNode.content = [];
+            });
+        };
+
+        for (var _iterator = Object.keys(scriptNodesIndex)[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+            _loop();
+        }
+    } catch (err) {
+        _didIteratorError = true;
+        _iteratorError = err;
+    } finally {
+        try {
+            if (!_iteratorNormalCompletion && _iterator.return) {
+                _iterator.return();
+            }
+        } finally {
+            if (_didIteratorError) {
+                throw _iteratorError;
+            }
+        }
+    }
+
+    return tree;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/mergeStyles.js

@@ -0,0 +1,34 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = mergeStyles;
+/* Merge multiple <style> into one */
+function mergeStyles(tree) {
+    var styleNodes = {};
+
+    tree.match({ tag: 'style' }, function (node) {
+        var nodeAttrs = node.attrs || {};
+        // Skip <style scoped></style>
+        // https://developer.mozilla.org/en/docs/Web/HTML/Element/style
+        if (nodeAttrs.scoped !== undefined) {
+            return node;
+        }
+
+        var styleType = nodeAttrs.type || 'text/css';
+        var styleMedia = nodeAttrs.media || 'all';
+        var styleKey = styleType + '_' + styleMedia;
+        if (styleNodes[styleKey]) {
+            var styleContent = (node.content || []).join(' ');
+            styleNodes[styleKey].content.push(' ' + styleContent);
+            return '';
+        }
+
+        node.content = node.content || [];
+        styleNodes[styleKey] = node;
+        return node;
+    });
+
+    return tree;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/minifyCss.js

@@ -0,0 +1,50 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = minifyCss;
+
+var _cssnano = require('cssnano');
+
+var _cssnano2 = _interopRequireDefault(_cssnano);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/** Minify CSS with cssnano */
+function minifyCss(tree, options, cssnanoOptions) {
+    var promises = [];
+    tree.walk(function (node) {
+        if (node.tag === 'style' && node.content && node.content.length) {
+            promises.push(processStyleNode(node, cssnanoOptions));
+        } else if (node.attrs && node.attrs.style) {
+            promises.push(processStyleAttr(node, cssnanoOptions));
+        }
+
+        return node;
+    });
+
+    return Promise.all(promises).then(function () {
+        return tree;
+    });
+}
+
+function processStyleNode(styleNode, cssnanoOptions) {
+    return _cssnano2.default.process(Array.isArray(styleNode.content) ? styleNode.content.join(' ') : styleNode.content, cssnanoOptions).then(function (result) {
+        return styleNode.content = [result.css];
+    });
+}
+
+function processStyleAttr(node, cssnanoOptions) {
+    // CSS "color: red;" is invalid. Therefore it should be wrapped inside some selector:
+    // a{color: red;}
+    var wrapperStart = 'a{';
+    var wrapperEnd = '}';
+    var wrappedStyle = wrapperStart + (node.attrs.style || '') + wrapperEnd;
+
+    return _cssnano2.default.process(wrappedStyle, cssnanoOptions).then(function (result) {
+        var minifiedCss = result.css;
+        // Remove wrapperStart at the start and wrapperEnd at the end of minifiedCss
+        node.attrs.style = minifiedCss.substring(wrapperStart.length, minifiedCss.length - wrapperEnd.length);
+    });
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/minifyJs.js

@@ -0,0 +1,94 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = minifyJs;
+
+var _terser = require('terser');
+
+var _terser2 = _interopRequireDefault(_terser);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/** Minify JS with Terser */
+function minifyJs(tree, options, terserOptions) {
+
+    tree.match({ tag: 'script' }, function (node) {
+        var nodeAttrs = node.attrs || {};
+        var mimeType = nodeAttrs.type || 'text/javascript';
+        if (mimeType === 'text/javascript' || mimeType === 'application/javascript') {
+            return processScriptNode(node, terserOptions);
+        }
+
+        return node;
+    });
+
+    tree.match({ attrs: true }, function (node) {
+        return processNodeWithOnAttrs(node, terserOptions);
+    });
+
+    return tree;
+}
+
+function processScriptNode(scriptNode, terserOptions) {
+    var js = (scriptNode.content || []).join(' ').trim();
+    if (!js) {
+        return scriptNode;
+    }
+
+    var result = _terser2.default.minify(js, terserOptions);
+    if (result.error) {
+        throw new Error(result.error);
+    }
+    if (result.code === undefined) {
+        return scriptNode;
+    }
+
+    scriptNode.content = [result.code];
+
+    return scriptNode;
+}
+
+function processNodeWithOnAttrs(node, terserOptions) {
+    var jsWrapperStart = 'function _(){';
+    var jsWrapperEnd = '}';
+
+    var _iteratorNormalCompletion = true;
+    var _didIteratorError = false;
+    var _iteratorError = undefined;
+
+    try {
+        for (var _iterator = Object.keys(node.attrs || {})[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+            var attrName = _step.value;
+
+            if (attrName.search('on') !== 0) {
+                continue;
+            }
+
+            // For example onclick="return false" is valid,
+            // but "return false;" is invalid (error: 'return' outside of function)
+            // Therefore the attribute's code should be wrapped inside function:
+            // "function _(){return false;}"
+            var wrappedJs = jsWrapperStart + node.attrs[attrName] + jsWrapperEnd;
+            var wrappedMinifiedJs = _terser2.default.minify(wrappedJs, terserOptions).code;
+            var minifiedJs = wrappedMinifiedJs.substring(jsWrapperStart.length, wrappedMinifiedJs.length - jsWrapperEnd.length);
+            node.attrs[attrName] = minifiedJs;
+        }
+    } catch (err) {
+        _didIteratorError = true;
+        _iteratorError = err;
+    } finally {
+        try {
+            if (!_iteratorNormalCompletion && _iterator.return) {
+                _iterator.return();
+            }
+        } finally {
+            if (_didIteratorError) {
+                throw _iteratorError;
+            }
+        }
+    }
+
+    return node;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/minifyJson.js

@@ -0,0 +1,27 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = minifyJson;
+/* Minify JSON inside <script> tags */
+function minifyJson(tree) {
+    // Match all <script> tags which have JSON mime type
+    tree.match({ tag: 'script', attrs: { type: /(\/|\+)json/ } }, function (node) {
+        var content = (node.content || []).join('');
+        if (!content) {
+            return node;
+        }
+
+        try {
+            content = JSON.stringify(JSON.parse(content));
+        } catch (error) {
+            return node;
+        }
+
+        node.content = [content];
+        return node;
+    });
+
+    return tree;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/minifySvg.js

@@ -0,0 +1,40 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = minifySvg;
+
+var _svgo = require('svgo');
+
+var _svgo2 = _interopRequireDefault(_svgo);
+
+var _posthtmlRender = require('posthtml-render');
+
+var _posthtmlRender2 = _interopRequireDefault(_posthtmlRender);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/** Minify SVG with SVGO */
+function minifySvg(tree, options) {
+    var svgoOptions = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
+
+    var promises = [];
+    var svgo = new _svgo2.default(svgoOptions);
+
+    tree.match({ tag: 'svg' }, function (node) {
+        var svgStr = (0, _posthtmlRender2.default)(node);
+        var promise = svgo.optimize(svgStr).then(function (result) {
+            node.tag = false;
+            node.attrs = {};
+            node.content = result.data;
+        });
+        promises.push(promise);
+
+        return node;
+    });
+
+    return Promise.all(promises).then(function () {
+        return tree;
+    });
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/removeComments.js

@@ -0,0 +1,54 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = removeComments;
+
+var _helpers = require('../helpers');
+
+/** Removes HTML comments */
+function removeComments(tree, options, removeType) {
+    if (removeType !== 'all' && removeType !== 'safe') {
+        removeType = 'safe';
+    }
+
+    tree.walk(function (node) {
+        if (node.contents && node.contents.length) {
+            node.contents = node.contents.filter(function (content) {
+                return !isCommentToRemove(content, removeType);
+            });
+        } else if (isCommentToRemove(node, removeType)) {
+            node = '';
+        }
+
+        return node;
+    });
+
+    return tree;
+}
+
+function isCommentToRemove(text, removeType) {
+    if (typeof text !== 'string') {
+        return false;
+    }
+
+    if (!(0, _helpers.isComment)(text)) {
+        // Not HTML comment
+        return false;
+    }
+
+    var isNoindex = text === '<!--noindex-->' || text === '<!--/noindex-->';
+    if (removeType === 'safe' && isNoindex) {
+        // Don't remove noindex comments.
+        // See: https://yandex.com/support/webmaster/controlling-robot/html.xml
+        return false;
+    }
+
+    // https://en.wikipedia.org/wiki/Conditional_comment
+    if (removeType === 'safe' && (0, _helpers.isConditionalComment)(text)) {
+        return false;
+    }
+
+    return true;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/removeEmptyAttributes.js

@@ -0,0 +1,33 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = removeEmptyAttributes;
+// Source: https://www.w3.org/TR/html4/sgml/dtd.html#events (Generic Attributes)
+var safeToRemoveAttrs = ['id', 'class', 'style', 'title', 'lang', 'dir', 'onclick', 'ondblclick', 'onmousedown', 'onmouseup', 'onmouseover', 'onmousemove', 'onmouseout', 'onkeypress', 'onkeydown', 'onkeyup'];
+
+/** Removes empty attributes */
+function removeEmptyAttributes(tree) {
+    tree.walk(function (node) {
+        if (!node.attrs) {
+            return node;
+        }
+
+        Object.keys(node.attrs).forEach(function (attrName) {
+            var attrNameLower = attrName.toLowerCase();
+            if (safeToRemoveAttrs.indexOf(attrNameLower) === -1) {
+                return;
+            }
+
+            var attrValue = node.attrs[attrName];
+            if (attrValue === '' || (attrValue || '').match(/^\s+$/)) {
+                delete node.attrs[attrName];
+            }
+        });
+
+        return node;
+    });
+
+    return tree;
+}

VISUALIZACION/node_modules/htmlnano/lib/modules/removeRedundantAttributes.js

@@ -0,0 +1,87 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = removeRedundantAttributes;
+var redundantAttributes = {
+    'form': {
+        'method': 'get'
+    },
+
+    'input': {
+        'type': 'text'
+    },
+
+    'button': {
+        'type': 'submit'
+    },
+
+    'script': {
+        'language': 'javascript',
+        'type': 'text/javascript',
+        // Remove attribute if the function returns false
+        'charset': function charset(node) {
+            // The charset attribute only really makes sense on “external” SCRIPT elements:
+            // http://perfectionkills.com/optimizing-html/#8_script_charset
+            return node.attrs && !node.attrs.src;
+        }
+    },
+
+    'style': {
+        'media': 'all',
+        'type': 'text/css'
+    },
+
+    'link': {
+        'media': 'all'
+    }
+};
+
+/** Removes redundant attributes */
+function removeRedundantAttributes(tree) {
+    var tags = Object.keys(redundantAttributes);
+    var tagMatchRegExp = new RegExp('^(' + tags.join('|') + ')$');
+    tree.match({ tag: tagMatchRegExp }, function (node) {
+        var tagRedundantAttributes = redundantAttributes[node.tag];
+        node.attrs = node.attrs || {};
+        var _iteratorNormalCompletion = true;
+        var _didIteratorError = false;
+        var _iteratorError = undefined;
+
+        try {
+            for (var _iterator = Object.keys(tagRedundantAttributes)[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+                var redundantAttributeName = _step.value;
+
+                var tagRedundantAttributeValue = tagRedundantAttributes[redundantAttributeName];
+                var isRemove = false;
+                if (typeof tagRedundantAttributeValue === 'function') {
+                    isRemove = tagRedundantAttributeValue(node);
+                } else if (node.attrs[redundantAttributeName] === tagRedundantAttributeValue) {
+                    isRemove = true;
+                }
+
+                if (isRemove) {
+                    delete node.attrs[redundantAttributeName];
+                }
+            }
+        } catch (err) {
+            _didIteratorError = true;
+            _iteratorError = err;
+        } finally {
+            try {
+                if (!_iteratorNormalCompletion && _iterator.return) {
+                    _iterator.return();
+                }
+            } finally {
+                if (_didIteratorError) {
+                    throw _iteratorError;
+                }
+            }
+        }
+
+        return node;
+    });
+
+    return tree;
+}