react app

react-app/node_modules/react/lib/getMarkupWrap.js

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+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule getMarkupWrap
+ */
+
+var ExecutionEnvironment = require("./ExecutionEnvironment");
+
+var invariant = require("./invariant");
+
+/**
+ * Dummy container used to detect which wraps are necessary.
+ */
+var dummyNode =
+  ExecutionEnvironment.canUseDOM ? document.createElement('div') : null;
+
+/**
+ * Some browsers cannot use `innerHTML` to render certain elements standalone,
+ * so we wrap them, render the wrapped nodes, then extract the desired node.
+ *
+ * In IE8, certain elements cannot render alone, so wrap all elements ('*').
+ */
+var shouldWrap = {
+  // Force wrapping for SVG elements because if they get created inside a <div>,
+  // they will be initialized in the wrong namespace (and will not display).
+  'circle': true,
+  'clipPath': true,
+  'defs': true,
+  'ellipse': true,
+  'g': true,
+  'line': true,
+  'linearGradient': true,
+  'path': true,
+  'polygon': true,
+  'polyline': true,
+  'radialGradient': true,
+  'rect': true,
+  'stop': true,
+  'text': true
+};
+
+var selectWrap = [1, '<select multiple="true">', '</select>'];
+var tableWrap = [1, '<table>', '</table>'];
+var trWrap = [3, '<table><tbody><tr>', '</tr></tbody></table>'];
+
+var svgWrap = [1, '<svg>', '</svg>'];
+
+var markupWrap = {
+  '*': [1, '?<div>', '</div>'],
+
+  'area': [1, '<map>', '</map>'],
+  'col': [2, '<table><tbody></tbody><colgroup>', '</colgroup></table>'],
+  'legend': [1, '<fieldset>', '</fieldset>'],
+  'param': [1, '<object>', '</object>'],
+  'tr': [2, '<table><tbody>', '</tbody></table>'],
+
+  'optgroup': selectWrap,
+  'option': selectWrap,
+
+  'caption': tableWrap,
+  'colgroup': tableWrap,
+  'tbody': tableWrap,
+  'tfoot': tableWrap,
+  'thead': tableWrap,
+
+  'td': trWrap,
+  'th': trWrap,
+
+  'circle': svgWrap,
+  'clipPath': svgWrap,
+  'defs': svgWrap,
+  'ellipse': svgWrap,
+  'g': svgWrap,
+  'line': svgWrap,
+  'linearGradient': svgWrap,
+  'path': svgWrap,
+  'polygon': svgWrap,
+  'polyline': svgWrap,
+  'radialGradient': svgWrap,
+  'rect': svgWrap,
+  'stop': svgWrap,
+  'text': svgWrap
+};
+
+/**
+ * Gets the markup wrap configuration for the supplied `nodeName`.
+ *
+ * NOTE: This lazily detects which wraps are necessary for the current browser.
+ *
+ * @param {string} nodeName Lowercase `nodeName`.
+ * @return {?array} Markup wrap configuration, if applicable.
+ */
+function getMarkupWrap(nodeName) {
+  ("production" !== process.env.NODE_ENV ? invariant(!!dummyNode, 'Markup wrapping node not initialized') : invariant(!!dummyNode));
+  if (!markupWrap.hasOwnProperty(nodeName)) {
+    nodeName = '*';
+  }
+  if (!shouldWrap.hasOwnProperty(nodeName)) {
+    if (nodeName === '*') {
+      dummyNode.innerHTML = '<link />';
+    } else {
+      dummyNode.innerHTML = '<' + nodeName + '></' + nodeName + '>';
+    }
+    shouldWrap[nodeName] = !dummyNode.firstChild;
+  }
+  return shouldWrap[nodeName] ? markupWrap[nodeName] : null;
+}
+
+
+module.exports = getMarkupWrap;