WIP - add extractor, generate snippet_data

node_modules/fbjs/lib/getVendorPrefixedName.js.flow

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+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @providesModule getVendorPrefixedName
+ * @typechecks
+ */
+const ExecutionEnvironment = require("./ExecutionEnvironment");
+
+const UserAgent = require("./UserAgent");
+
+const camelize = require("./camelize");
+
+const invariant = require("./invariant");
+
+const memoized = {};
+const prefixes = ['Webkit', 'ms', 'Moz', 'O'];
+const prefixRegex = new RegExp('^(' + prefixes.join('|') + ')');
+const testStyle = ExecutionEnvironment.canUseDOM ? document.createElement('div').style : {};
+
+function getWithPrefix(name) {
+  for (let i = 0; i < prefixes.length; i++) {
+    const prefixedName = prefixes[i] + name;
+
+    if (prefixedName in testStyle) {
+      return prefixedName;
+    }
+  }
+
+  return null;
+}
+
+function guessVendorPrefixedNameFromUserAgent(name) {
+  switch (name) {
+    case 'lineClamp':
+      if (UserAgent.isEngine('WebKit >= 315.14.2')) {
+        return 'WebkitLineClamp';
+      }
+
+      return null;
+
+    default:
+      return null;
+  }
+}
+/**
+ * @param {string} property Name of a css property to check for.
+ * @return {?string} property name supported in the browser, or null if not
+ * supported.
+ */
+
+
+function getVendorPrefixedName(property) {
+  const name = camelize(property);
+
+  if (memoized[name] === undefined) {
+    const capitalizedName = name.charAt(0).toUpperCase() + name.slice(1);
+
+    if (prefixRegex.test(capitalizedName)) {
+      invariant(false, 'getVendorPrefixedName must only be called with unprefixed' + 'CSS property names. It was called with %s', property);
+    }
+
+    if (ExecutionEnvironment.canUseDOM) {
+      memoized[name] = name in testStyle ? name : getWithPrefix(capitalizedName);
+    } else {
+      memoized[name] = guessVendorPrefixedNameFromUserAgent(name);
+    }
+  }
+
+  return memoized[name];
+}
+
+module.exports = getVendorPrefixedName;