1 line
9.7 KiB
JSON
1 line
9.7 KiB
JSON
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{"ast":null,"code":"'use strict';\n\nconst {\n EMPTY_BUFFER\n} = require('./constants');\nconst FastBuffer = Buffer[Symbol.species];\n\n/**\n * Merges an array of buffers into a new buffer.\n *\n * @param {Buffer[]} list The array of buffers to concat\n * @param {Number} totalLength The total length of buffers in the list\n * @return {Buffer} The resulting buffer\n * @public\n */\nfunction concat(list, totalLength) {\n if (list.length === 0) return EMPTY_BUFFER;\n if (list.length === 1) return list[0];\n const target = Buffer.allocUnsafe(totalLength);\n let offset = 0;\n for (let i = 0; i < list.length; i++) {\n const buf = list[i];\n target.set(buf, offset);\n offset += buf.length;\n }\n if (offset < totalLength) {\n return new FastBuffer(target.buffer, target.byteOffset, offset);\n }\n return target;\n}\n\n/**\n * Masks a buffer using the given mask.\n *\n * @param {Buffer} source The buffer to mask\n * @param {Buffer} mask The mask to use\n * @param {Buffer} output The buffer where to store the result\n * @param {Number} offset The offset at which to start writing\n * @param {Number} length The number of bytes to mask.\n * @public\n */\nfunction _mask(source, mask, output, offset, length) {\n for (let i = 0; i < length; i++) {\n output[offset + i] = source[i] ^ mask[i & 3];\n }\n}\n\n/**\n * Unmasks a buffer using the given mask.\n *\n * @param {Buffer} buffer The buffer to unmask\n * @param {Buffer} mask The mask to use\n * @public\n */\nfunction _unmask(buffer, mask) {\n for (let i = 0; i < buffer.length; i++) {\n buffer[i] ^= mask[i & 3];\n }\n}\n\n/**\n * Converts a buffer to an `ArrayBuffer`.\n *\n * @param {Buffer} buf The buffer to convert\n * @return {ArrayBuffer} Converted buffer\n * @public\n */\nfunction toArrayBuffer(buf) {\n if (buf.length === buf.buffer.byteLength) {\n return buf.buffer;\n }\n return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.length);\n}\n\n/**\n * Converts `data` to a `Buffer`.\n *\n * @param {*} data The data to convert\n * @return {Buffer} The buffer\n * @throws {TypeError}\n * @public\n */\nfunction toBuffer(data) {\n toBuffer.readOnly = true;\n if (Buffer.isBuffer(data)) return data;\n let buf;\n if (data instanceof ArrayBuffer) {\n buf = new FastBuffer(data);\n } else if (ArrayBuffer.isView(data)) {\n buf = new FastBuffer(data.buffer, data.byteOffset, data.byteLength);\n } else {\n buf = Buffer.from(data);\n toBuffer.readOnly = false;\n }\n return buf;\n}\nmodule.exports = {\n concat,\n mask: _mask,\n toArrayBuffer,\n toBuffer,\n unmask: _unmask\n};\n\n/* istanbul ignore else */\nif (!process.env.WS_NO_BUFFER_UTIL) {\n try {\n const bufferUtil = require('bufferutil');\n module.exports.mask = function (source, mask, output, offset, length) {\n if (length < 48) _mask(source, mask, output, offset, length);else bufferUtil.mask(source, mask, output, offset, length);\n };\n module.exports.unmask = function (buffer, mask) {\n if (buffer.length < 32) _unmask(buffer, mask);else bufferUtil.unmask(buffer, mask);\n };\n } catch (e) {\n // Continue regardless of the error.\n }\n}","map":{"version":3,"names":["EMPTY_BUFFER","require","FastBuffer","Buffer","Symbol","species","concat","list","totalLength","length","target","allocUnsafe","offset","i","buf","set","buffer","byteOffset","_mask","source","mask","output","_unmask","toArrayBuffer","byteLength","slice","toBuffer","data","readOnly","isBuffer","ArrayBuffer","isView","from","module","exports","unmask","process","env","WS_NO_BUFFER_UTIL","bufferUtil","e"],"sources":["/Users/shoofle/Projects/the-forest/node_modules/@libsql/isomorphic-ws/node_modules/ws/lib/buffer-util.js"],"sourcesContent":["'use strict';\n\nconst { EMPTY_BUFFER } = require('./constants');\n\nconst FastBuffer = Buffer[Symbol.species];\n\n/**\n * Merges an array of buffers into a new buffer.\n *\n * @param {Buffer[]} list The array of buffers to concat\n * @param {Number} totalLength The total length of buffers in the list\n * @return {Buffer} The resulting buffer\n * @pub
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