| 'use strict'; | 
|   | 
| exports.__esModule = true; | 
| exports.default = warnOnce; | 
| var printed = {}; | 
|   | 
| function warnOnce(message) { | 
|     if (printed[message]) return; | 
|     printed[message] = true; | 
|   | 
|     if (typeof console !== 'undefined' && console.warn) console.warn(message); | 
| } | 
| module.exports = exports['default']; | 
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