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react/packages/shared/__tests__/ReactSymbols-test.internal.js
T
Andrew Clark 9cdf8a99ed [Codemod] Update copyright header to Meta (#25315)
* Facebook -> Meta in copyright

rg --files | xargs sed -i 's#Copyright (c) Facebook, Inc. and its affiliates.#Copyright (c) Meta Platforms, Inc. and affiliates.#g'

* Manual tweaks
2022-10-18 11:19:24 -04:00

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741 B
JavaScript

/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @emails react-core
*/
'use strict';
describe('ReactSymbols', () => {
beforeEach(() => jest.resetModules());
const expectToBeUnique = keyValuePairs => {
const map = new Map();
keyValuePairs.forEach(([key, value]) => {
if (map.has(value)) {
throw Error(
`${key} value ${value.toString()} is the same as ${map.get(value)}.`,
);
}
map.set(value, key);
});
};
it('Symbol values should be unique', () => {
expectToBeUnique(Object.entries(require('shared/ReactSymbols')));
});
});