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- /**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @flow strict-local
- */
- 'use strict';
- const warning = require('fbjs/lib/warning');
- const warnedKeys: {[string]: boolean, ...} = {};
- /**
- * A simple function that prints a warning message once per session.
- *
- * @param {string} key - The key used to ensure the message is printed once.
- * This should be unique to the callsite.
- * @param {string} message - The message to print
- */
- function warnOnce(key: string, message: string) {
- if (warnedKeys[key]) {
- return;
- }
- warning(false, message);
- warnedKeys[key] = true;
- }
- module.exports = warnOnce;
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