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- "use strict";
- /**
- * 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.
- *
- * @typechecks
- */
- var ExecutionEnvironment = require("./ExecutionEnvironment");
- var UserAgent = require("./UserAgent");
- var camelize = require("./camelize");
- var invariant = require("./invariant");
- var memoized = {};
- var prefixes = ['Webkit', 'ms', 'Moz', 'O'];
- var prefixRegex = new RegExp('^(' + prefixes.join('|') + ')');
- var testStyle = ExecutionEnvironment.canUseDOM ? document.createElement('div').style : {};
- function getWithPrefix(name) {
- for (var i = 0; i < prefixes.length; i++) {
- var 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) {
- var name = camelize(property);
- if (memoized[name] === undefined) {
- var capitalizedName = name.charAt(0).toUpperCase() + name.slice(1);
- if (prefixRegex.test(capitalizedName)) {
- !false ? process.env.NODE_ENV !== "production" ? invariant(false, 'getVendorPrefixedName must only be called with unprefixed' + 'CSS property names. It was called with %s', property) : invariant(false) : void 0;
- }
- if (ExecutionEnvironment.canUseDOM) {
- memoized[name] = name in testStyle ? name : getWithPrefix(capitalizedName);
- } else {
- memoized[name] = guessVendorPrefixedNameFromUserAgent(name);
- }
- }
- return memoized[name];
- }
- module.exports = getVendorPrefixedName;
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