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