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"use strict"; /** * Copyright (c) 2013-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. * */ var invariant = require("./invariant"); var CircularBuffer = /*#__PURE__*/function () { function CircularBuffer(size) { !(size > 0) ? process.env.NODE_ENV !== "production" ? invariant(false, 'Buffer size should be a positive integer') : invariant(false) : void 0; this._size = size; this._head = 0; this._buffer = []; } var _proto = CircularBuffer.prototype; _proto.write = function write(entry) { if (this._buffer.length < this._size) { this._buffer.push(entry); } else { this._buffer[this._head] = entry; this._head++; this._head %= this._size; } return this; }; _proto.read = function read() { return this._buffer.slice(this._head).concat(this._buffer.slice(0, this._head)); }; _proto.clear = function clear() { this._head = 0; this._buffer = []; return this; }; return CircularBuffer; }(); module.exports = CircularBuffer;