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[Web] Add Platform module for web target #23387

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[Web] Add Platform module for web target #23387

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85f08ab
Create Platform.web.js
EvanBacon Feb 7, 2019
dd344e6
Merge branch 'master' into @evanbacon/Platform/web
EvanBacon Feb 11, 2019
11b158c
Update Platform.web.js
EvanBacon Feb 12, 2019
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24 changes: 24 additions & 0 deletions Libraries/Utilities/Platform.web.js
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Original file line number Diff line number Diff line change
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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow
*/

'use strict';

export type PlatformSelectSpec<D, I> = {
default?: D,
web?: I,
};

const Platform = {
OS: 'web',
select: <D, I>(spec: PlatformSelectSpec<D, I>): D | I =>
'web' in spec ? spec.web : spec.default,
};

module.exports = Platform;