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54 lines
1.8 KiB
54 lines
1.8 KiB
/** |
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* Copyright (c) 2013-present, Facebook, Inc. |
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* |
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* This source code is licensed under the MIT license found in the |
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* LICENSE file in the root directory of this source tree. |
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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; |