fix: Resolve TypeScript errors
Signed-off-by: Hermes Agent <hermes@nosuchhost>
This commit is contained in:
Hermes Agent
602
client/node_modules/y-leveldb/dist/y-leveldb.cjs
generated
vendored
Normal file
602
client/node_modules/y-leveldb/dist/y-leveldb.cjs
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vendored
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@@ -0,0 +1,602 @@
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'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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var Y = require('yjs');
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var encoding = require('lib0/dist/encoding.cjs');
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var decoding = require('lib0/dist/decoding.cjs');
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var binary = require('lib0/dist/binary.cjs');
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var promise = require('lib0/dist/promise.cjs');
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var buffer$1 = require('lib0/dist/buffer.cjs');
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var defaultLevel = require('level');
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var buffer = require('buffer');
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function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
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function _interopNamespace(e) {
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if (e && e.__esModule) return e;
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var n = Object.create(null);
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if (e) {
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Object.keys(e).forEach(function (k) {
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if (k !== 'default') {
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var d = Object.getOwnPropertyDescriptor(e, k);
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Object.defineProperty(n, k, d.get ? d : {
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enumerable: true,
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get: function () { return e[k]; }
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});
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}
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});
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}
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n["default"] = e;
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return Object.freeze(n);
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}
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var Y__namespace = /*#__PURE__*/_interopNamespace(Y);
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var encoding__namespace = /*#__PURE__*/_interopNamespace(encoding);
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var decoding__namespace = /*#__PURE__*/_interopNamespace(decoding);
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var binary__namespace = /*#__PURE__*/_interopNamespace(binary);
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var promise__namespace = /*#__PURE__*/_interopNamespace(promise);
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var buffer__namespace = /*#__PURE__*/_interopNamespace(buffer$1);
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var defaultLevel__default = /*#__PURE__*/_interopDefaultLegacy(defaultLevel);
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const PREFERRED_TRIM_SIZE = 500;
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const YEncodingString = 0;
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const YEncodingUint32 = 1;
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const valueEncoding = {
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buffer: true,
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type: 'y-value',
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encode: /** @param {any} data */ data => data,
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decode: /** @param {any} data */ data => data
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};
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/**
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* Write two bytes as an unsigned integer in big endian order.
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* (most significant byte first)
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*
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* @function
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* @param {encoding.Encoder} encoder
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* @param {number} num The number that is to be encoded.
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*/
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const writeUint32BigEndian = (encoder, num) => {
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for (let i = 3; i >= 0; i--) {
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encoding__namespace.write(encoder, (num >>> (8 * i)) & binary__namespace.BITS8);
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}
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};
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/**
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* Read 4 bytes as unsigned integer in big endian order.
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* (most significant byte first)
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*
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* @todo use lib0/decoding instead
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*
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* @function
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* @param {decoding.Decoder} decoder
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* @return {number} An unsigned integer.
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*/
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const readUint32BigEndian = decoder => {
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const uint =
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(decoder.arr[decoder.pos + 3] +
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(decoder.arr[decoder.pos + 2] << 8) +
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(decoder.arr[decoder.pos + 1] << 16) +
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(decoder.arr[decoder.pos] << 24)) >>> 0;
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decoder.pos += 4;
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return uint
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};
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const keyEncoding = {
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buffer: true,
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type: 'y-keys',
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/* istanbul ignore next */
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encode: /** @param {Array<string|number>} arr */ arr => {
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const encoder = encoding__namespace.createEncoder();
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for (let i = 0; i < arr.length; i++) {
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const v = arr[i];
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if (typeof v === 'string') {
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encoding__namespace.writeUint8(encoder, YEncodingString);
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encoding__namespace.writeVarString(encoder, v);
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} else /* istanbul ignore else */ if (typeof v === 'number') {
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encoding__namespace.writeUint8(encoder, YEncodingUint32);
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writeUint32BigEndian(encoder, v);
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} else {
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throw new Error('Unexpected key value')
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}
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}
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return buffer.Buffer.from(encoding__namespace.toUint8Array(encoder))
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},
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decode: /** @param {Uint8Array} buf */ buf => {
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const decoder = decoding__namespace.createDecoder(buf);
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const key = [];
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while (decoding__namespace.hasContent(decoder)) {
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switch (decoding__namespace.readUint8(decoder)) {
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case YEncodingString:
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key.push(decoding__namespace.readVarString(decoder));
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break
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case YEncodingUint32:
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key.push(readUint32BigEndian(decoder));
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break
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}
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}
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return key
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}
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};
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/**
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* level returns an error if a value is not found.
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*
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* This helper method for level returns `null` instead if the key is not found.
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*
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* @param {any} db
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* @param {any} key
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*/
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const levelGet = async (db, key) => {
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let res;
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try {
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res = await db.get(key);
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} catch (err) {
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/* istanbul ignore else */
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if (err.notFound) {
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return null
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} else {
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throw err
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}
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}
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return res
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};
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/**
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* Level expects a Buffer, but in Yjs we typically work with Uint8Arrays.
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*
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* Since Level thinks that these are two entirely different things,
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* we transform the Uint8array to a Buffer before storing it.
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*
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* @param {any} db
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* @param {any} key
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* @param {Uint8Array} val
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*/
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const levelPut = async (db, key, val) => db.put(key, buffer.Buffer.from(val));
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/**
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* A "bulkier" implementation of level streams. Returns the result in one flush.
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*
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* @param {any} db
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* @param {object} opts
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* @return {Promise<Array<any>>}
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*/
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const getLevelBulkData = (db, opts) => promise__namespace.create((resolve, reject) => {
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/**
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* @type {Array<any>} result
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*/
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const result = [];
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db.createReadStream(
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opts
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).on('data', /** @param {any} data */ data =>
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result.push(data)
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).on('end', () =>
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resolve(result)
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).on('error', reject);
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});
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/**
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* Get all document updates for a specific document.
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*
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* @param {any} db
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* @param {string} docName
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* @param {any} [opts]
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* @return {Promise<Array<Buffer>>}
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*/
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const getLevelUpdates = (db, docName, opts = { values: true, keys: false }) => getLevelBulkData(db, {
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gte: createDocumentUpdateKey(docName, 0),
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lt: createDocumentUpdateKey(docName, binary__namespace.BITS32),
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...opts
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});
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/**
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* Get all document updates for a specific document.
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*
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* @param {any} db
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* @param {boolean} values
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* @param {boolean} keys
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* @return {Promise<Array<any>>}
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*/
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const getAllDocs = (db, values, keys) => getLevelBulkData(db, {
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gte: ['v1_sv'],
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lt: ['v1_sw'],
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keys,
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values
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});
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/**
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* @param {any} db
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* @param {string} docName
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* @return {Promise<number>} Returns -1 if this document doesn't exist yet
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*/
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const getCurrentUpdateClock = (db, docName) => getLevelUpdates(db, docName, { keys: true, values: false, reverse: true, limit: 1 }).then(keys => {
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if (keys.length === 0) {
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return -1
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} else {
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return keys[0][3]
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}
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});
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/**
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* @param {any} db
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* @param {Array<string|number>} gte Greater than or equal
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* @param {Array<string|number>} lt lower than (not equal)
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* @return {Promise<void>}
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*/
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const clearRange = async (db, gte, lt) => {
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/* istanbul ignore else */
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if (db.supports.clear) {
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await db.clear({ gte, lt });
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} else {
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const keys = await getLevelBulkData(db, { values: false, keys: true, gte, lt });
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const ops = keys.map(key => ({ type: 'del', key }));
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await db.batch(ops);
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}
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};
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/**
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* @param {any} db
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* @param {string} docName
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* @param {number} from Greater than or equal
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* @param {number} to lower than (not equal)
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* @return {Promise<void>}
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*/
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const clearUpdatesRange = async (db, docName, from, to) => clearRange(db, createDocumentUpdateKey(docName, from), createDocumentUpdateKey(docName, to));
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/**
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* Create a unique key for a update message.
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* We encode the result using `keyEncoding` which expects an array.
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*
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* @param {string} docName
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* @param {number} clock must be unique
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* @return {Array<string|number>}
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*/
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const createDocumentUpdateKey = (docName, clock) => ['v1', docName, 'update', clock];
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/**
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* @param {string} docName
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* @param {string} metaKey
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*/
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const createDocumentMetaKey = (docName, metaKey) => ['v1', docName, 'meta', metaKey];
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/**
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* @param {string} docName
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*/
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const createDocumentMetaEndKey = (docName) => ['v1', docName, 'metb']; // simple trick
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/**
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* We have a separate state vector key so we can iterate efficiently over all documents
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* @param {string} docName
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*/
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const createDocumentStateVectorKey = (docName) => ['v1_sv', docName];
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/**
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* @param {string} docName
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*/
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const createDocumentFirstKey = (docName) => ['v1', docName];
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/**
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* We use this key as the upper limit of all keys that can be written.
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* Make sure that all document keys are smaller! Strings are encoded using varLength string encoding,
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* so we need to make sure that this key has the biggest size!
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*
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* @param {string} docName
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*/
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const createDocumentLastKey = (docName) => ['v1', docName, 'zzzzzzz'];
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// const emptyStateVector = (() => Y.encodeStateVector(new Y.Doc()))()
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/**
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* For now this is a helper method that creates a Y.Doc and then re-encodes a document update.
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* In the future this will be handled by Yjs without creating a Y.Doc (constant memory consumption).
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*
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* @param {Array<Uint8Array>} updates
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* @return {{update:Uint8Array, sv: Uint8Array}}
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*/
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const mergeUpdates = (updates) => {
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const ydoc = new Y__namespace.Doc();
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ydoc.transact(() => {
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for (let i = 0; i < updates.length; i++) {
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Y__namespace.applyUpdate(ydoc, updates[i]);
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}
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});
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return { update: Y__namespace.encodeStateAsUpdate(ydoc), sv: Y__namespace.encodeStateVector(ydoc) }
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};
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/**
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* @param {any} db
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* @param {string} docName
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* @param {Uint8Array} sv state vector
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* @param {number} clock current clock of the document so we can determine when this statevector was created
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*/
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const writeStateVector = async (db, docName, sv, clock) => {
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const encoder = encoding__namespace.createEncoder();
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encoding__namespace.writeVarUint(encoder, clock);
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encoding__namespace.writeVarUint8Array(encoder, sv);
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await levelPut(db, createDocumentStateVectorKey(docName), encoding__namespace.toUint8Array(encoder));
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};
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/**
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* @param {Uint8Array} buf
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* @return {{ sv: Uint8Array, clock: number }}
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*/
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const decodeLeveldbStateVector = buf => {
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const decoder = decoding__namespace.createDecoder(buf);
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const clock = decoding__namespace.readVarUint(decoder);
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const sv = decoding__namespace.readVarUint8Array(decoder);
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return { sv, clock }
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};
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/**
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* @param {any} db
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* @param {string} docName
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*/
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const readStateVector = async (db, docName) => {
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const buf = await levelGet(db, createDocumentStateVectorKey(docName));
|
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if (buf === null) {
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// no state vector created yet or no document exists
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return { sv: null, clock: -1 }
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}
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return decodeLeveldbStateVector(buf)
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};
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|
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/**
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* @param {any} db
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* @param {string} docName
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* @param {Uint8Array} stateAsUpdate
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||||
* @param {Uint8Array} stateVector
|
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* @return {Promise<number>} returns the clock of the flushed doc
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*/
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const flushDocument = async (db, docName, stateAsUpdate, stateVector) => {
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const clock = await storeUpdate(db, docName, stateAsUpdate);
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await writeStateVector(db, docName, stateVector, clock);
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await clearUpdatesRange(db, docName, 0, clock); // intentionally not waiting for the promise to resolve!
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return clock
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};
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||||
|
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/**
|
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* @param {any} db
|
||||
* @param {string} docName
|
||||
* @param {Uint8Array} update
|
||||
* @return {Promise<number>} Returns the clock of the stored update
|
||||
*/
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const storeUpdate = async (db, docName, update) => {
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const clock = await getCurrentUpdateClock(db, docName);
|
||||
if (clock === -1) {
|
||||
// make sure that a state vector is aways written, so we can search for available documents
|
||||
const ydoc = new Y__namespace.Doc();
|
||||
Y__namespace.applyUpdate(ydoc, update);
|
||||
const sv = Y__namespace.encodeStateVector(ydoc);
|
||||
await writeStateVector(db, docName, sv, 0);
|
||||
}
|
||||
await levelPut(db, createDocumentUpdateKey(docName, clock + 1), update);
|
||||
return clock + 1
|
||||
};
|
||||
|
||||
class LeveldbPersistence {
|
||||
/**
|
||||
* @param {string} location
|
||||
* @param {object} [opts]
|
||||
* @param {any} [opts.level] Level-compatible adapter. E.g. leveldown, level-rem, level-indexeddb. Defaults to `level`
|
||||
* @param {object} [opts.levelOptions] Options that are passed down to the level instance
|
||||
*/
|
||||
constructor (location, /* istanbul ignore next */ { level = defaultLevel__default["default"], levelOptions = {} } = {}) {
|
||||
const db = level(location, { ...levelOptions, valueEncoding, keyEncoding });
|
||||
this.tr = promise__namespace.resolve();
|
||||
/**
|
||||
* Execute an transaction on a database. This will ensure that other processes are currently not writing.
|
||||
*
|
||||
* This is a private method and might change in the future.
|
||||
*
|
||||
* @todo only transact on the same room-name. Allow for concurrency of different rooms.
|
||||
*
|
||||
* @template T
|
||||
*
|
||||
* @param {function(any):Promise<T>} f A transaction that receives the db object
|
||||
* @return {Promise<T>}
|
||||
*/
|
||||
this._transact = f => {
|
||||
const currTr = this.tr;
|
||||
this.tr = (async () => {
|
||||
await currTr;
|
||||
let res = /** @type {any} */ (null);
|
||||
try {
|
||||
res = await f(db);
|
||||
} catch (err) {
|
||||
/* istanbul ignore next */
|
||||
console.warn('Error during y-leveldb transaction', err);
|
||||
}
|
||||
return res
|
||||
})();
|
||||
return this.tr
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
*/
|
||||
flushDocument (docName) {
|
||||
return this._transact(async db => {
|
||||
const updates = await getLevelUpdates(db, docName);
|
||||
const { update, sv } = mergeUpdates(updates);
|
||||
await flushDocument(db, docName, update, sv);
|
||||
})
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @return {Promise<Y.Doc>}
|
||||
*/
|
||||
getYDoc (docName) {
|
||||
return this._transact(async db => {
|
||||
const updates = await getLevelUpdates(db, docName);
|
||||
const ydoc = new Y__namespace.Doc();
|
||||
ydoc.transact(() => {
|
||||
for (let i = 0; i < updates.length; i++) {
|
||||
Y__namespace.applyUpdate(ydoc, updates[i]);
|
||||
}
|
||||
});
|
||||
if (updates.length > PREFERRED_TRIM_SIZE) {
|
||||
await flushDocument(db, docName, Y__namespace.encodeStateAsUpdate(ydoc), Y__namespace.encodeStateVector(ydoc));
|
||||
}
|
||||
return ydoc
|
||||
})
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @return {Promise<Uint8Array>}
|
||||
*/
|
||||
getStateVector (docName) {
|
||||
return this._transact(async db => {
|
||||
const { clock, sv } = await readStateVector(db, docName);
|
||||
let curClock = -1;
|
||||
if (sv !== null) {
|
||||
curClock = await getCurrentUpdateClock(db, docName);
|
||||
}
|
||||
if (sv !== null && clock === curClock) {
|
||||
return sv
|
||||
} else {
|
||||
// current state vector is outdated
|
||||
const updates = await getLevelUpdates(db, docName);
|
||||
const { update, sv } = mergeUpdates(updates);
|
||||
await flushDocument(db, docName, update, sv);
|
||||
return sv
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @param {Uint8Array} update
|
||||
* @return {Promise<number>} Returns the clock of the stored update
|
||||
*/
|
||||
storeUpdate (docName, update) {
|
||||
return this._transact(db => storeUpdate(db, docName, update))
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @param {Uint8Array} stateVector
|
||||
*/
|
||||
async getDiff (docName, stateVector) {
|
||||
const ydoc = await this.getYDoc(docName);
|
||||
return Y__namespace.encodeStateAsUpdate(ydoc, stateVector)
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @return {Promise<void>}
|
||||
*/
|
||||
clearDocument (docName) {
|
||||
return this._transact(async db => {
|
||||
await db.del(createDocumentStateVectorKey(docName));
|
||||
await clearRange(db, createDocumentFirstKey(docName), createDocumentLastKey(docName));
|
||||
})
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @param {string} metaKey
|
||||
* @param {any} value
|
||||
* @return {Promise<void>}
|
||||
*/
|
||||
setMeta (docName, metaKey, value) {
|
||||
return this._transact(db => levelPut(db, createDocumentMetaKey(docName, metaKey), buffer__namespace.encodeAny(value)))
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @param {string} metaKey
|
||||
* @return {Promise<any>}
|
||||
*/
|
||||
delMeta (docName, metaKey) {
|
||||
return this._transact(db => db.del(createDocumentMetaKey(docName, metaKey)))
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @param {string} metaKey
|
||||
* @return {Promise<any>}
|
||||
*/
|
||||
getMeta (docName, metaKey) {
|
||||
return this._transact(async db => {
|
||||
const res = await levelGet(db, createDocumentMetaKey(docName, metaKey));
|
||||
if (res === null) {
|
||||
return// return void
|
||||
}
|
||||
return buffer__namespace.decodeAny(res)
|
||||
})
|
||||
}
|
||||
|
||||
/**
|
||||
* @return {Promise<Array<string>>}
|
||||
*/
|
||||
getAllDocNames () {
|
||||
return this._transact(async db => {
|
||||
const docKeys = await getAllDocs(db, false, true);
|
||||
return docKeys.map(key => key[1])
|
||||
})
|
||||
}
|
||||
|
||||
/**
|
||||
* @return {Promise<Array<{ name: string, sv: Uint8Array, clock: number }>>}
|
||||
*/
|
||||
getAllDocStateVectors () {
|
||||
return this._transact(async db => {
|
||||
const docs = /** @type {any} */ (await getAllDocs(db, true, true));
|
||||
return docs.map(doc => {
|
||||
const { sv, clock } = decodeLeveldbStateVector(doc.value);
|
||||
return { name: doc.key[1], sv, clock }
|
||||
})
|
||||
})
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} docName
|
||||
* @return {Promise<Map<string, any>>}
|
||||
*/
|
||||
getMetas (docName) {
|
||||
return this._transact(async db => {
|
||||
const data = await getLevelBulkData(db, {
|
||||
gte: createDocumentMetaKey(docName, ''),
|
||||
lt: createDocumentMetaEndKey(docName),
|
||||
keys: true,
|
||||
values: true
|
||||
});
|
||||
const metas = new Map();
|
||||
data.forEach(v => { metas.set(v.key[3], buffer__namespace.decodeAny(v.value)); });
|
||||
return metas
|
||||
})
|
||||
}
|
||||
|
||||
/**
|
||||
* Close connection to a leveldb database and discard all state and bindings
|
||||
*
|
||||
* @return {Promise<void>}
|
||||
*/
|
||||
destroy () {
|
||||
return this._transact(db => db.close())
|
||||
}
|
||||
|
||||
/**
|
||||
* Delete all data in database.
|
||||
*/
|
||||
clearAll () {
|
||||
return this._transact(async db => db.clear())
|
||||
}
|
||||
}
|
||||
|
||||
exports.LeveldbPersistence = LeveldbPersistence;
|
||||
exports.PREFERRED_TRIM_SIZE = PREFERRED_TRIM_SIZE;
|
||||
exports.getAllDocs = getAllDocs;
|
||||
exports.getCurrentUpdateClock = getCurrentUpdateClock;
|
||||
exports.getLevelBulkData = getLevelBulkData;
|
||||
exports.getLevelUpdates = getLevelUpdates;
|
||||
exports.keyEncoding = keyEncoding;
|
||||
exports.readUint32BigEndian = readUint32BigEndian;
|
||||
exports.writeUint32BigEndian = writeUint32BigEndian;
|
||||
//# sourceMappingURL=y-leveldb.cjs.map
|
||||
Reference in New Issue
Block a user