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data-provider-temporary

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Library that helps with server-to-client synchronization of data

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/** * Copyright (c) 2014-present, Facebook, Inc. All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. * * */ 'use strict'; const scroll = (size, _ref) => {let offset = _ref.offset,max = _ref.max; let start = 0; let index = Math.min(offset, size); const halfScreen = max / 2; if (index <= halfScreen) { start = 0; } else { if (size >= max) { start = Math.min(index - halfScreen - 1, size - max); } index = Math.min(index - start, size); } return { end: Math.min(size, start + max), index, start }; }; module.exports = scroll;