56 lines
2.0 KiB
JavaScript
56 lines
2.0 KiB
JavaScript
/**
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* Copyright 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*
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*/
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'use strict';
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var _assign = require('object-assign');
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var lowPriorityWarning = require('./lowPriorityWarning');
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/**
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* This will log a single deprecation notice per function and forward the call
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* on to the new API.
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*
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* @param {string} fnName The name of the function
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* @param {string} newModule The module that fn will exist in
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* @param {string} newPackage The module that fn will exist in
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* @param {*} ctx The context this forwarded call should run in
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* @param {function} fn The function to forward on to
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* @return {function} The function that will warn once and then call fn
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*/
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function deprecated(fnName, newModule, newPackage, ctx, fn) {
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var warned = false;
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if (process.env.NODE_ENV !== 'production') {
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var newFn = function () {
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lowPriorityWarning(warned,
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/* eslint-disable no-useless-concat */
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// Require examples in this string must be split to prevent React's
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// build tools from mistaking them for real requires.
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// Otherwise the build tools will attempt to build a '%s' module.
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'React.%s is deprecated. Please use %s.%s from require' + "('%s') " + 'instead.', fnName, newModule, fnName, newPackage);
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/* eslint-enable no-useless-concat */
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warned = true;
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return fn.apply(ctx, arguments);
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};
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// We need to make sure all properties of the original fn are copied over.
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// In particular, this is needed to support PropTypes
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_assign(newFn, fn);
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// Flow is not smart enough to figure out that newFn is of the same type as
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// fn. Since we don't want to lose out the type of the function, casting
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// to any and force flow to use T.
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return newFn;
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}
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return fn;
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}
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module.exports = deprecated; |