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9a7fff9eb1
Summary: This pull request adds a function called `warnOnce` that prints a warning message to the console once per session. It uses a unique key per callsite to help ensure that the message is not printed multiple times. [General] [Added] - Added new `warnOnce` function for printing a message to the developer console once per session [General] [Changed] - Changed the warnings in `react-native-implementation` to use `warnOnce` Pull Request resolved: https://github.com/facebook/react-native/pull/22109 Differential Revision: D13955887 Pulled By: cpojer fbshipit-source-id: aa51ac427a80cc0554a6bcc915715821d0bd5439
35 lines
766 B
JavaScript
35 lines
766 B
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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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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* @format
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* @flow
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*/
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'use strict';
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const warning = require('fbjs/lib/warning');
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const warnedKeys: {[string]: boolean} = {};
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/**
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* A simple function that prints a warning message once per session.
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*
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* @param {string} key - The key used to ensure the message is printed once.
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* This should be unique to the callsite.
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* @param {string} message - The message to print
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*/
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function warnOnce(key: string, message: string) {
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if (warnedKeys[key]) {
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return;
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}
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warning(false, message);
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warnedKeys[key] = true;
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}
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module.exports = warnOnce;
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