@duckdb/duckdb-wasm/dist/duckdb-node.cjs.map

DuckDB powered by WebAssembly

{
  "version": 3,
  "sources": ["../../web-worker/cjs/node.js", "../src/targets/duckdb.ts", "../src/bindings/config.ts", "../src/bindings/tokens.ts", "../src/log.ts", "../src/status.ts", "../src/parallel/async_connection.ts", "../src/parallel/worker_request.ts", "../src/json_typedef.ts", "../src/parallel/async_bindings.ts", "../src/bindings/runtime.ts", "../src/parallel/worker_dispatcher.ts", "../../wasm-feature-detect/dist/esm/index.js", "../package.json", "../src/version.ts", "../src/platform.ts", "../src/worker.ts"],
  "sourcesContent": ["/**\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *     http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nconst URL = require('url');\n\nconst VM = require('vm');\n\nconst threads = require('worker_threads');\n\nconst WORKER = Symbol.for('worker');\nconst EVENTS = Symbol.for('events');\n\nclass EventTarget {\n  constructor() {\n    Object.defineProperty(this, EVENTS, {\n      value: new Map()\n    });\n  }\n\n  dispatchEvent(event) {\n    event.target = event.currentTarget = this;\n\n    if (this['on' + event.type]) {\n      try {\n        this['on' + event.type](event);\n      } catch (err) {\n        console.error(err);\n      }\n    }\n\n    const list = this[EVENTS].get(event.type);\n    if (list == null) return;\n    list.forEach(handler => {\n      try {\n        handler.call(this, event);\n      } catch (err) {\n        console.error(err);\n      }\n    });\n  }\n\n  addEventListener(type, fn) {\n    let events = this[EVENTS].get(type);\n    if (!events) this[EVENTS].set(type, events = []);\n    events.push(fn);\n  }\n\n  removeEventListener(type, fn) {\n    let events = this[EVENTS].get(type);\n\n    if (events) {\n      const index = events.indexOf(fn);\n      if (index !== -1) events.splice(index, 1);\n    }\n  }\n\n}\n\nfunction Event(type, target) {\n  this.type = type;\n  this.timeStamp = Date.now();\n  this.target = this.currentTarget = this.data = null;\n} // this module is used self-referentially on both sides of the\n// thread boundary, but behaves differently in each context.\n\n\nmodule.exports = threads.isMainThread ? mainThread() : workerThread();\nconst baseUrl = URL.pathToFileURL(process.cwd() + '/');\n\nfunction mainThread() {\n  /**\n   * A web-compatible Worker implementation atop Node's worker_threads.\n   *  - uses DOM-style events (Event.data, Event.type, etc)\n   *  - supports event handler properties (worker.onmessage)\n   *  - Worker() constructor accepts a module URL\n   *  - accepts the {type:'module'} option\n   *  - emulates WorkerGlobalScope within the worker\n   * @param {string} url  The URL or module specifier to load\n   * @param {object} [options]  Worker construction options\n   * @param {string} [options.name]  Available as `self.name` within the Worker\n   * @param {string} [options.type=\"classic\"]  Pass \"module\" to create a Module Worker.\n   */\n  class Worker extends EventTarget {\n    constructor(url, options) {\n      super();\n      const {\n        name,\n        type\n      } = options || {};\n      url += '';\n      let mod;\n\n      if (/^data:/.test(url)) {\n        mod = url;\n      } else {\n        mod = URL.fileURLToPath(new URL.URL(url, baseUrl));\n      }\n\n      const worker = new threads.Worker(__filename, {\n        workerData: {\n          mod,\n          name,\n          type\n        }\n      });\n      Object.defineProperty(this, WORKER, {\n        value: worker\n      });\n      worker.on('message', data => {\n        const event = new Event('message');\n        event.data = data;\n        this.dispatchEvent(event);\n      });\n      worker.on('error', error => {\n        error.type = 'error';\n        this.dispatchEvent(error);\n      });\n      worker.on('exit', () => {\n        this.dispatchEvent(new Event('close'));\n      });\n    }\n\n    postMessage(data, transferList) {\n      this[WORKER].postMessage(data, transferList);\n    }\n\n    terminate() {\n      this[WORKER].terminate();\n    }\n\n  }\n\n  Worker.prototype.onmessage = Worker.prototype.onerror = Worker.prototype.onclose = null;\n  return Worker;\n}\n\nfunction workerThread() {\n  let {\n    mod,\n    name,\n    type\n  } = threads.workerData; // turn global into a mock WorkerGlobalScope\n\n  const self = global.self = global; // enqueue messages to dispatch after modules are loaded\n\n  let q = [];\n\n  function flush() {\n    const buffered = q;\n    q = null;\n    buffered.forEach(event => {\n      self.dispatchEvent(event);\n    });\n  }\n\n  threads.parentPort.on('message', data => {\n    const event = new Event('message');\n    event.data = data;\n    if (q == null) self.dispatchEvent(event);else q.push(event);\n  });\n  threads.parentPort.on('error', err => {\n    err.type = 'Error';\n    self.dispatchEvent(err);\n  });\n\n  class WorkerGlobalScope extends EventTarget {\n    postMessage(data, transferList) {\n      threads.parentPort.postMessage(data, transferList);\n    } // Emulates https://developer.mozilla.org/en-US/docs/Web/API/DedicatedWorkerGlobalScope/close\n\n\n    close() {\n      process.exit();\n    }\n\n  }\n\n  let proto = Object.getPrototypeOf(global);\n  delete proto.constructor;\n  Object.defineProperties(WorkerGlobalScope.prototype, proto);\n  proto = Object.setPrototypeOf(global, new WorkerGlobalScope());\n  ['postMessage', 'addEventListener', 'removeEventListener', 'dispatchEvent'].forEach(fn => {\n    proto[fn] = proto[fn].bind(global);\n  });\n  global.name = name;\n  const isDataUrl = /^data:/.test(mod);\n\n  if (type === 'module') {\n    import(mod).catch(err => {\n      if (isDataUrl && err.message === 'Not supported') {\n        console.warn('Worker(): Importing data: URLs requires Node 12.10+. Falling back to classic worker.');\n        return evaluateDataUrl(mod, name);\n      }\n\n      console.error(err);\n    }).then(flush);\n  } else {\n    try {\n      if (/^data:/.test(mod)) {\n        evaluateDataUrl(mod, name);\n      } else {\n        require(mod);\n      }\n    } catch (err) {\n      console.error(err);\n    }\n\n    Promise.resolve().then(flush);\n  }\n}\n\nfunction evaluateDataUrl(url, name) {\n  const {\n    data\n  } = parseDataUrl(url);\n  return VM.runInThisContext(data, {\n    filename: 'worker.<' + (name || 'data:') + '>'\n  });\n}\n\nfunction parseDataUrl(url) {\n  let [m, type, encoding, data] = url.match(/^data: *([^;,]*)(?: *; *([^,]*))? *,(.*)$/) || [];\n  if (!m) throw Error('Invalid Data URL.');\n  if (encoding) switch (encoding.toLowerCase()) {\n    case 'base64':\n      data = Buffer.from(data, 'base64').toString();\n      break;\n\n    default:\n      throw Error('Unknown Data URL encoding \"' + encoding + '\"');\n  }\n  return {\n    type,\n    data\n  };\n}", "export * from '../bindings/config';\nexport * from '../bindings/tokens';\nexport * from '../log';\nexport * from '../status';\nexport * from '../parallel';\nexport * from '../platform';\nexport * from '../version';\nexport * from '../worker';\n\nexport { InstantiationProgress, InstantiationProgressHandler, DuckDBDataProtocol, WebFile } from '../bindings';\n", "export interface DuckDBQueryConfig {\n    /**\n     * The polling interval for queries\n     */\n    queryPollingInterval?: number;\n    /**\n     * Cast BigInt to Double?\n     */\n    castBigIntToDouble?: boolean;\n    /**\n     * Cast Timestamp to Date64?\n     */\n    castTimestampToDate?: boolean;\n    /**\n     * Cast Timestamp to Date64?\n     */\n    castDurationToTime64?: boolean;\n    /**\n     * Cast Decimal to Double?\n     */\n    castDecimalToDouble?: boolean;\n}\n\nexport interface DuckDBFilesystemConfig {\n    /**\n     * Allow falling back to full HTTP reads if the server does not support range requests.\n     */\n    reliableHeadRequests?: boolean;\n    allowFullHTTPReads?: boolean;\n}\n\nexport enum DuckDBAccessMode {\n    UNDEFINED = 0,\n    AUTOMATIC = 1,\n    READ_ONLY = 2,\n    READ_WRITE = 3,\n}\n\nexport interface DuckDBConfig {\n    /**\n     * The database path\n     */\n    path?: string;\n    /**\n     * The access mode\n     */\n    accessMode?: DuckDBAccessMode;\n    /**\n     * The maximum number of threads.\n     * Note that this will only work with cross-origin isolated sites since it requires SharedArrayBuffers.\n     */\n    maximumThreads?: number;\n    /**\n     * The direct io flag\n     */\n    useDirectIO?: boolean;\n    /**\n     * The query config\n     */\n    query?: DuckDBQueryConfig;\n    /**\n     * The filesystem config\n     */\n    filesystem?: DuckDBFilesystemConfig;\n    /**\n     * Whether to allow unsigned extensions\n     */\n    allowUnsignedExtensions?: boolean;\n    /**\n     * Custom user agent string\n     */\n    customUserAgent?: string;\n}\n", "export enum TokenType {\n    IDENTIFIER = 0,\n    NUMERIC_CONSTANT = 1,\n    STRING_CONSTANT = 2,\n    OPERATOR = 3,\n    KEYWORD = 4,\n    COMMENT = 5,\n}\n\nexport interface ScriptTokens {\n    offsets: number[];\n    types: TokenType[];\n}\n", "export enum LogLevel {\n    NONE = 0,\n    DEBUG = 1,\n    INFO = 2,\n    WARNING = 3,\n    ERROR = 4,\n}\n\nexport enum LogTopic {\n    NONE = 0,\n    CONNECT = 1,\n    DISCONNECT = 2,\n    OPEN = 3,\n    QUERY = 4,\n    INSTANTIATE = 5,\n}\n\nexport enum LogEvent {\n    NONE = 0,\n    OK = 1,\n    ERROR = 2,\n    START = 3,\n    RUN = 4,\n    CAPTURE = 5,\n}\n\nexport enum LogOrigin {\n    NONE = 0,\n    WEB_WORKER = 1,\n    NODE_WORKER = 2,\n    BINDINGS = 3,\n    ASYNC_DUCKDB = 4,\n}\n\nexport type LogEntry<O, T, E, V> = {\n    readonly timestamp: Date;\n    readonly level: LogLevel;\n    readonly origin: O;\n    readonly topic: T;\n    readonly event: E;\n    readonly value: V;\n};\n\nexport type ProgressEntry = {\n    readonly status: string;\n    readonly percentage: string;\n    readonly repetitions: string;\n}\n\n/** An execution progress handler */\nexport type ExecutionProgressHandler = (p: ProgressEntry) => void;\n\nexport type LogEntryVariant =\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.INSTANTIATE, LogEvent.ERROR, string>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.QUERY, LogEvent.START, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.QUERY, LogEvent.OK, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.QUERY, LogEvent.ERROR, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.CONNECT, LogEvent.OK, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.CONNECT, LogEvent.ERROR, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.DISCONNECT, LogEvent.OK, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.DISCONNECT, LogEvent.ERROR, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.OPEN, LogEvent.START, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.OPEN, LogEvent.OK, void>\n    | LogEntry<LogOrigin.BINDINGS, LogTopic.OPEN, LogEvent.ERROR, void>\n    | LogEntry<LogOrigin.ASYNC_DUCKDB, LogTopic.QUERY, LogEvent.RUN, string>;\n\nexport interface Logger {\n    log(entry: LogEntryVariant): void;\n}\n\nexport class VoidLogger implements Logger {\n    public log(_entry: LogEntryVariant): void {}\n}\n\nexport class ConsoleLogger implements Logger {\n    constructor(protected level: LogLevel = LogLevel.INFO) {}\n    public log(entry: LogEntryVariant): void {\n        if (entry.level >= this.level) {\n            console.log(entry);\n        }\n    }\n}\n\nexport function getLogLevelLabel(level: LogLevel): string {\n    switch (level) {\n        case LogLevel.NONE:\n            return 'NONE';\n        case LogLevel.DEBUG:\n            return 'DEBUG';\n        case LogLevel.INFO:\n            return 'INFO';\n        case LogLevel.WARNING:\n            return 'WARNING';\n        case LogLevel.ERROR:\n            return 'ERROR';\n        default:\n            return '?';\n    }\n}\n\nexport function getLogEventLabel(event: LogEvent): string {\n    switch (event) {\n        case LogEvent.NONE:\n            return 'NONE';\n        case LogEvent.OK:\n            return 'OK';\n        case LogEvent.ERROR:\n            return 'ERROR';\n        case LogEvent.START:\n            return 'START';\n        case LogEvent.RUN:\n            return 'RUN';\n        case LogEvent.CAPTURE:\n            return 'CAPTURE';\n        default:\n            return '?';\n    }\n}\n\nexport function getLogTopicLabel(topic: LogTopic): string {\n    switch (topic) {\n        case LogTopic.CONNECT:\n            return 'CONNECT';\n        case LogTopic.DISCONNECT:\n            return 'DISCONNECT';\n        case LogTopic.INSTANTIATE:\n            return 'INSTANTIATE';\n        case LogTopic.OPEN:\n            return 'OPEN';\n        case LogTopic.QUERY:\n            return 'QUERY';\n        default:\n            return '?';\n    }\n}\n\nexport function getLogOriginLabel(origin: LogOrigin): string {\n    switch (origin) {\n        case LogOrigin.NONE:\n            return 'NONE';\n        case LogOrigin.WEB_WORKER:\n            return 'WEB WORKER';\n        case LogOrigin.NODE_WORKER:\n            return 'NODE WORKER';\n        case LogOrigin.BINDINGS:\n            return 'DUCKDB BINDINGS';\n        case LogOrigin.ASYNC_DUCKDB:\n            return 'DUCKDB';\n        default:\n            return '?';\n    }\n}\n", "export enum StatusCode {\n    SUCCESS = 0,\n}\n", "import * as arrow from 'apache-arrow';\nimport { AsyncDuckDB } from './async_bindings';\nimport { LogLevel, LogTopic, LogOrigin, LogEvent } from '../log';\nimport { ArrowInsertOptions, CSVInsertOptions, JSONInsertOptions } from '../bindings/insert_options';\n\n/** A thin helper to memoize the connection id */\nexport class AsyncDuckDBConnection {\n    /** The async duckdb */\n    protected readonly _bindings: AsyncDuckDB;\n    /** The conn handle */\n    protected readonly _conn: number;\n\n    constructor(bindings: AsyncDuckDB, conn: number) {\n        this._bindings = bindings;\n        this._conn = conn;\n    }\n\n    /** Access the database bindings */\n    public get bindings(): AsyncDuckDB {\n        return this._bindings;\n    }\n\n    /** Disconnect from the database */\n    public async close(): Promise<void> {\n        return this._bindings.disconnect(this._conn);\n    }\n\n    /** Brave souls may use this function to consume the underlying connection id */\n    public useUnsafe<R>(callback: (bindings: AsyncDuckDB, conn: number) => R) {\n        return callback(this._bindings, this._conn);\n    }\n\n    /** Run a query */\n    public async query<T extends { [key: string]: arrow.DataType } = any>(text: string): Promise<arrow.Table<T>> {\n        this._bindings.logger.log({\n            timestamp: new Date(),\n            level: LogLevel.INFO,\n            origin: LogOrigin.ASYNC_DUCKDB,\n            topic: LogTopic.QUERY,\n            event: LogEvent.RUN,\n            value: text,\n        });\n        const buffer = await this._bindings.runQuery(this._conn, text);\n        const reader = arrow.RecordBatchReader.from<T>(buffer);\n        console.assert(reader.isSync(), \"Reader is not sync\");\n        console.assert(reader.isFile(), \"Reader is not file\");\n        return new arrow.Table(reader as arrow.RecordBatchFileReader);\n    }\n\n    /** Send a query */\n    public async send<T extends { [key: string]: arrow.DataType } = any>(\n        text: string,\n        allowStreamResult: boolean = false,\n    ): Promise<arrow.AsyncRecordBatchStreamReader<T>> {\n        this._bindings.logger.log({\n            timestamp: new Date(),\n            level: LogLevel.INFO,\n            origin: LogOrigin.ASYNC_DUCKDB,\n            topic: LogTopic.QUERY,\n            event: LogEvent.RUN,\n            value: text,\n        });\n        let header = await this._bindings.startPendingQuery(this._conn, text, allowStreamResult);\n        while (header == null) {\n            header = await this._bindings.pollPendingQuery(this._conn);\n        }\n        const iter = new AsyncResultStreamIterator(this._bindings, this._conn, header);\n        const reader = await arrow.RecordBatchReader.from<T>(iter);\n        console.assert(reader.isAsync());\n        console.assert(reader.isStream());\n        return reader as unknown as arrow.AsyncRecordBatchStreamReader<T>; // XXX\n    }\n\n    /** Cancel a query that was sent earlier */\n    public async cancelSent(): Promise<boolean> {\n        return await this._bindings.cancelPendingQuery(this._conn);\n    }\n\n    /** Get table names */\n    public async getTableNames(query: string): Promise<string[]> {\n        return await this._bindings.getTableNames(this._conn, query);\n    }\n\n    /** Create a prepared statement */\n    public async prepare<T extends { [key: string]: arrow.DataType } = any>(\n        text: string,\n    ): Promise<AsyncPreparedStatement<T>> {\n        const stmt = await this._bindings.createPrepared(this._conn, text);\n        return new AsyncPreparedStatement<T>(this._bindings, this._conn, stmt);\n    }\n\n    /** Insert an arrow table */\n    public async insertArrowTable(table: arrow.Table, options: ArrowInsertOptions): Promise<void> {\n        const buffer = arrow.tableToIPC(table, 'stream');\n        await this.insertArrowFromIPCStream(buffer, options);\n    }\n    /** Insert an arrow table from an ipc stream */\n    public async insertArrowFromIPCStream(buffer: Uint8Array, options: ArrowInsertOptions): Promise<void> {\n        await this._bindings.insertArrowFromIPCStream(this._conn, buffer, options);\n    }\n    /** Insert csv file from path */\n    public async insertCSVFromPath(text: string, options: CSVInsertOptions): Promise<void> {\n        await this._bindings.insertCSVFromPath(this._conn, text, options);\n    }\n    /** Insert json file from path */\n    public async insertJSONFromPath(text: string, options: JSONInsertOptions): Promise<void> {\n        await this._bindings.insertJSONFromPath(this._conn, text, options);\n    }\n}\n\n/** An async result stream iterator */\nexport class AsyncResultStreamIterator implements AsyncIterable<Uint8Array> {\n    /** First chunk? */\n    protected _first: boolean;\n    /** Reached end of stream? */\n    protected _depleted: boolean;\n    /** In-flight */\n    protected _inFlight: Promise<Uint8Array> | null;\n\n    constructor(\n        protected readonly db: AsyncDuckDB,\n        protected readonly conn: number,\n        protected readonly header: Uint8Array,\n    ) {\n        this._first = true;\n        this._depleted = false;\n        this._inFlight = null;\n    }\n\n    async next(): Promise<IteratorResult<Uint8Array>> {\n        if (this._first) {\n            this._first = false;\n            return { done: false, value: this.header };\n        }\n        if (this._depleted) {\n            return { done: true, value: null };\n        }\n        let buffer: Uint8Array;\n        if (this._inFlight != null) {\n            buffer = await this._inFlight;\n            this._inFlight = null;\n        } else {\n            buffer = await this.db.fetchQueryResults(this.conn);\n        }\n        this._depleted = buffer.length == 0;\n        if (!this._depleted) {\n            this._inFlight = this.db.fetchQueryResults(this.conn);\n        }\n        return {\n            done: this._depleted,\n            value: buffer,\n        };\n    }\n\n    [Symbol.asyncIterator]() {\n        return this;\n    }\n}\n\n/** A thin helper to bind the prepared statement id */\nexport class AsyncPreparedStatement<T extends { [key: string]: arrow.DataType } = any> {\n    /** The bindings */\n    protected readonly bindings: AsyncDuckDB;\n    /** The connection id */\n    protected readonly connectionId: number;\n    /** The statement id */\n    protected readonly statementId: number;\n\n    /** Constructor */\n    constructor(bindings: AsyncDuckDB, connectionId: number, statementId: number) {\n        this.bindings = bindings;\n        this.connectionId = connectionId;\n        this.statementId = statementId;\n    }\n\n    /** Close a prepared statement */\n    public async close() {\n        await this.bindings.closePrepared(this.connectionId, this.statementId);\n    }\n\n    /** Run a prepared statement */\n    public async query(...params: any[]): Promise<arrow.Table<T>> {\n        const buffer = await this.bindings.runPrepared(this.connectionId, this.statementId, params);\n        const reader = arrow.RecordBatchReader.from<T>(buffer);\n        console.assert(reader.isSync());\n        console.assert(reader.isFile());\n        return new arrow.Table(reader as arrow.RecordBatchFileReader);\n    }\n\n    /** Send a prepared statement */\n    public async send(...params: any[]): Promise<arrow.AsyncRecordBatchStreamReader<T>> {\n        const header = await this.bindings.sendPrepared(this.connectionId, this.statementId, params);\n        const iter = new AsyncResultStreamIterator(this.bindings, this.connectionId, header);\n        const reader = await arrow.RecordBatchReader.from<T>(iter);\n        console.assert(reader.isAsync());\n        console.assert(reader.isStream());\n        return reader as unknown as arrow.AsyncRecordBatchStreamReader<T>; // XXX\n    }\n}\n", "import { CSVInsertOptions, JSONInsertOptions, ArrowInsertOptions } from '../bindings/insert_options';\nimport { LogEntryVariant, ProgressEntry } from '../log';\nimport { ScriptTokens } from '../bindings/tokens';\nimport { FileStatistics } from '../bindings/file_stats';\nimport { DuckDBConfig } from '../bindings/config';\nimport { WebFile } from '../bindings/web_file';\nimport { InstantiationProgress } from '../bindings/progress';\nimport { DuckDBDataProtocol } from '../bindings';\n\nexport type ConnectionID = number;\nexport type StatementID = number;\n\nexport enum WorkerRequestType {\n    CANCEL_PENDING_QUERY = 'CANCEL_PENDING_QUERY',\n    CLOSE_PREPARED = 'CLOSE_PREPARED',\n    COLLECT_FILE_STATISTICS = 'COLLECT_FILE_STATISTICS',\n    REGISTER_OPFS_FILE_NAME = 'REGISTER_OPFS_FILE_NAME',\n    CONNECT = 'CONNECT',\n    COPY_FILE_TO_BUFFER = 'COPY_FILE_TO_BUFFER',\n    COPY_FILE_TO_PATH = 'COPY_FILE_TO_PATH',\n    CREATE_PREPARED = 'CREATE_PREPARED',\n    DISCONNECT = 'DISCONNECT',\n    DROP_FILE = 'DROP_FILE',\n    DROP_FILES = 'DROP_FILES',\n    EXPORT_FILE_STATISTICS = 'EXPORT_FILE_STATISTICS',\n    FETCH_QUERY_RESULTS = 'FETCH_QUERY_RESULTS',\n    FLUSH_FILES = 'FLUSH_FILES',\n    GET_FEATURE_FLAGS = 'GET_FEATURE_FLAGS',\n    GET_TABLE_NAMES = 'GET_TABLE_NAMES',\n    GET_VERSION = 'GET_VERSION',\n    GLOB_FILE_INFOS = 'GLOB_FILE_INFOS',\n    INSERT_ARROW_FROM_IPC_STREAM = 'INSERT_ARROW_FROM_IPC_STREAM',\n    INSERT_CSV_FROM_PATH = 'IMPORT_CSV_FROM_PATH',\n    INSERT_JSON_FROM_PATH = 'IMPORT_JSON_FROM_PATH',\n    INSTANTIATE = 'INSTANTIATE',\n    OPEN = 'OPEN',\n    PING = 'PING',\n    POLL_PENDING_QUERY = 'POLL_PENDING_QUERY',\n    REGISTER_FILE_BUFFER = 'REGISTER_FILE_BUFFER',\n    REGISTER_FILE_HANDLE = 'REGISTER_FILE_HANDLE',\n    REGISTER_FILE_URL = 'REGISTER_FILE_URL',\n    RESET = 'RESET',\n    RUN_PREPARED = 'RUN_PREPARED',\n    RUN_QUERY = 'RUN_QUERY',\n    SEND_PREPARED = 'SEND_PREPARED',\n    START_PENDING_QUERY = 'START_PENDING_QUERY',\n    TOKENIZE = 'TOKENIZE',\n}\n\nexport enum WorkerResponseType {\n    CONNECTION_INFO = 'CONNECTION_INFO',\n    ERROR = 'ERROR',\n    FEATURE_FLAGS = 'FEATURE_FLAGS',\n    FILE_BUFFER = 'FILE_BUFFER',\n    FILE_INFOS = 'FILE_INFOS',\n    FILE_SIZE = 'FILE_SIZE',\n    FILE_STATISTICS = 'FILE_STATISTICS',\n    INSTANTIATE_PROGRESS = 'INSTANTIATE_PROGRESS',\n    LOG = 'LOG',\n    PROGRESS_UPDATE = 'PROGRESS_UPDATE',\n    OK = 'OK',\n    PREPARED_STATEMENT_ID = 'PREPARED_STATEMENT_ID',\n    QUERY_PLAN = 'QUERY_PLAN',\n    QUERY_RESULT = 'QUERY_RESULT',\n    QUERY_RESULT_CHUNK = 'QUERY_RESULT_CHUNK',\n    QUERY_RESULT_HEADER = 'QUERY_RESULT_HEADER',\n    QUERY_RESULT_HEADER_OR_NULL = 'QUERY_RESULT_HEADER_OR_NULL',\n    REGISTERED_FILE = 'REGISTERED_FILE',\n    SCRIPT_TOKENS = 'SCRIPT_TOKENS',\n    SUCCESS = 'SUCCESS',\n    TABLE_NAMES = 'TABLE_NAMES',\n    VERSION_STRING = 'VERSION_STRING',\n}\n\nexport type WorkerRequest<T, P> = {\n    readonly messageId: number;\n    readonly type: T;\n    readonly data: P;\n};\n\nexport type WorkerResponse<T, P> = {\n    readonly messageId: number;\n    readonly requestId: number;\n    readonly type: T;\n    readonly data: P;\n};\n\nexport type WorkerTaskReturnType<T extends WorkerTaskVariant> = T extends WorkerTask<any, any, infer P> ? P : never;\n\nexport class WorkerTask<T, D, P> {\n    readonly type: T;\n    readonly data: D;\n    promise: Promise<P>;\n    promiseResolver: (value: P | PromiseLike<P>) => void = () => {};\n    promiseRejecter: (value: any) => void = () => {};\n\n    constructor(type: T, data: D) {\n        this.type = type;\n        this.data = data;\n        this.promise = new Promise<P>(\n            (resolve: (value: P | PromiseLike<P>) => void, reject: (reason?: void) => void) => {\n                this.promiseResolver = resolve;\n                this.promiseRejecter = reject;\n            },\n        );\n    }\n}\n\nexport type WorkerRequestVariant =\n    | WorkerRequest<WorkerRequestType.CLOSE_PREPARED, [ConnectionID, StatementID]>\n    | WorkerRequest<WorkerRequestType.CANCEL_PENDING_QUERY, number>\n    | WorkerRequest<WorkerRequestType.COLLECT_FILE_STATISTICS, [string, boolean]>\n    | WorkerRequest<WorkerRequestType.REGISTER_OPFS_FILE_NAME, [string]>\n    | WorkerRequest<WorkerRequestType.CONNECT, null>\n    | WorkerRequest<WorkerRequestType.COPY_FILE_TO_BUFFER, string>\n    | WorkerRequest<WorkerRequestType.COPY_FILE_TO_PATH, [string, string]>\n    | WorkerRequest<WorkerRequestType.CREATE_PREPARED, [ConnectionID, string]>\n    | WorkerRequest<WorkerRequestType.DISCONNECT, number>\n    | WorkerRequest<WorkerRequestType.DROP_FILE, string>\n    | WorkerRequest<WorkerRequestType.DROP_FILES, null>\n    | WorkerRequest<WorkerRequestType.EXPORT_FILE_STATISTICS, string>\n    | WorkerRequest<WorkerRequestType.FETCH_QUERY_RESULTS, number>\n    | WorkerRequest<WorkerRequestType.FLUSH_FILES, null>\n    | WorkerRequest<WorkerRequestType.GET_FEATURE_FLAGS, null>\n    | WorkerRequest<WorkerRequestType.GET_TABLE_NAMES, [number, string]>\n    | WorkerRequest<WorkerRequestType.GET_VERSION, null>\n    | WorkerRequest<WorkerRequestType.GLOB_FILE_INFOS, string>\n    | WorkerRequest<\n          WorkerRequestType.INSERT_ARROW_FROM_IPC_STREAM,\n          [number, Uint8Array, ArrowInsertOptions | undefined]\n      >\n    | WorkerRequest<WorkerRequestType.INSERT_CSV_FROM_PATH, [number, string, CSVInsertOptions]>\n    | WorkerRequest<WorkerRequestType.INSERT_JSON_FROM_PATH, [number, string, JSONInsertOptions]>\n    | WorkerRequest<WorkerRequestType.INSTANTIATE, [string, string | null]>\n    | WorkerRequest<WorkerRequestType.OPEN, DuckDBConfig>\n    | WorkerRequest<WorkerRequestType.PING, null>\n    | WorkerRequest<WorkerRequestType.POLL_PENDING_QUERY, number>\n    | WorkerRequest<WorkerRequestType.REGISTER_FILE_BUFFER, [string, Uint8Array]>\n    | WorkerRequest<WorkerRequestType.REGISTER_FILE_HANDLE, [string, any, DuckDBDataProtocol, boolean]>\n    | WorkerRequest<WorkerRequestType.REGISTER_FILE_URL, [string, string, DuckDBDataProtocol, boolean]>\n    | WorkerRequest<WorkerRequestType.RESET, null>\n    | WorkerRequest<WorkerRequestType.RUN_PREPARED, [number, number, any[]]>\n    | WorkerRequest<WorkerRequestType.RUN_QUERY, [number, string]>\n    | WorkerRequest<WorkerRequestType.SEND_PREPARED, [number, number, any[]]>\n    | WorkerRequest<WorkerRequestType.START_PENDING_QUERY, [number, string, boolean]>\n    | WorkerRequest<WorkerRequestType.TOKENIZE, string>;\n\nexport type WorkerResponseVariant =\n    | WorkerResponse<WorkerResponseType.CONNECTION_INFO, number>\n    | WorkerResponse<WorkerResponseType.ERROR, any>\n    | WorkerResponse<WorkerResponseType.FEATURE_FLAGS, number>\n    | WorkerResponse<WorkerResponseType.FILE_BUFFER, Uint8Array>\n    | WorkerResponse<WorkerResponseType.FILE_INFOS, WebFile[]>\n    | WorkerResponse<WorkerResponseType.FILE_SIZE, number>\n    | WorkerResponse<WorkerResponseType.FILE_STATISTICS, FileStatistics>\n    | WorkerResponse<WorkerResponseType.INSTANTIATE_PROGRESS, InstantiationProgress>\n    | WorkerResponse<WorkerResponseType.LOG, LogEntryVariant>\n    | WorkerResponse<WorkerResponseType.PROGRESS_UPDATE, ProgressEntry>\n    | WorkerResponse<WorkerResponseType.OK, null>\n    | WorkerResponse<WorkerResponseType.PREPARED_STATEMENT_ID, number>\n    | WorkerResponse<WorkerResponseType.QUERY_PLAN, Uint8Array>\n    | WorkerResponse<WorkerResponseType.QUERY_RESULT, Uint8Array>\n    | WorkerResponse<WorkerResponseType.QUERY_RESULT_CHUNK, Uint8Array>\n    | WorkerResponse<WorkerResponseType.QUERY_RESULT_HEADER, Uint8Array>\n    | WorkerResponse<WorkerResponseType.QUERY_RESULT_HEADER_OR_NULL, Uint8Array | null>\n    | WorkerResponse<WorkerResponseType.SCRIPT_TOKENS, ScriptTokens>\n    | WorkerResponse<WorkerResponseType.SUCCESS, boolean>\n    | WorkerResponse<WorkerResponseType.TABLE_NAMES, string[]>\n    | WorkerResponse<WorkerResponseType.VERSION_STRING, string>;\n\nexport type WorkerTaskVariant =\n    | WorkerTask<WorkerRequestType.COLLECT_FILE_STATISTICS, [string, boolean], null>\n    | WorkerTask<WorkerRequestType.REGISTER_OPFS_FILE_NAME, [string], null>\n    | WorkerTask<WorkerRequestType.CLOSE_PREPARED, [number, number], null>\n    | WorkerTask<WorkerRequestType.CONNECT, null, ConnectionID>\n    | WorkerTask<WorkerRequestType.COPY_FILE_TO_BUFFER, string, Uint8Array>\n    | WorkerTask<WorkerRequestType.COPY_FILE_TO_PATH, [string, string], null>\n    | WorkerTask<WorkerRequestType.CREATE_PREPARED, [number, string], number>\n    | WorkerTask<WorkerRequestType.DISCONNECT, ConnectionID, null>\n    | WorkerTask<WorkerRequestType.DROP_FILE, string, null>\n    | WorkerTask<WorkerRequestType.DROP_FILES, null, null>\n    | WorkerTask<WorkerRequestType.EXPORT_FILE_STATISTICS, string, FileStatistics>\n    | WorkerTask<WorkerRequestType.FETCH_QUERY_RESULTS, ConnectionID, Uint8Array>\n    | WorkerTask<WorkerRequestType.FLUSH_FILES, null, null>\n    | WorkerTask<WorkerRequestType.GET_FEATURE_FLAGS, null, number>\n    | WorkerTask<WorkerRequestType.GET_TABLE_NAMES, [number, string], string[]>\n    | WorkerTask<WorkerRequestType.GET_VERSION, null, string>\n    | WorkerTask<\n          WorkerRequestType.INSERT_ARROW_FROM_IPC_STREAM,\n          [number, Uint8Array, ArrowInsertOptions | undefined],\n          null\n      >\n    | WorkerTask<WorkerRequestType.INSERT_CSV_FROM_PATH, [number, string, CSVInsertOptions], null>\n    | WorkerTask<WorkerRequestType.INSERT_JSON_FROM_PATH, [number, string, JSONInsertOptions], null>\n    | WorkerTask<WorkerRequestType.INSTANTIATE, [string, string | null], null>\n    | WorkerTask<WorkerRequestType.OPEN, DuckDBConfig, null>\n    | WorkerTask<WorkerRequestType.PING, null, null>\n    | WorkerTask<WorkerRequestType.REGISTER_FILE_BUFFER, [string, Uint8Array], null>\n    | WorkerTask<WorkerRequestType.REGISTER_FILE_HANDLE, [string, any, DuckDBDataProtocol, boolean], null>\n    | WorkerTask<WorkerRequestType.REGISTER_FILE_URL, [string, string, DuckDBDataProtocol, boolean], null>\n    | WorkerTask<WorkerRequestType.GLOB_FILE_INFOS, string, WebFile[]>\n    | WorkerTask<WorkerRequestType.RESET, null, null>\n    | WorkerTask<WorkerRequestType.RUN_PREPARED, [number, number, any[]], Uint8Array>\n    | WorkerTask<WorkerRequestType.RUN_QUERY, [ConnectionID, string], Uint8Array>\n    | WorkerTask<WorkerRequestType.SEND_PREPARED, [number, number, any[]], Uint8Array>\n    | WorkerTask<WorkerRequestType.START_PENDING_QUERY, [ConnectionID, string, boolean], Uint8Array | null>\n    | WorkerTask<WorkerRequestType.POLL_PENDING_QUERY, ConnectionID, Uint8Array | null>\n    | WorkerTask<WorkerRequestType.CANCEL_PENDING_QUERY, ConnectionID, boolean>\n    | WorkerTask<WorkerRequestType.TOKENIZE, string, ScriptTokens>;\n", "import * as arrow from 'apache-arrow';\n\nexport interface SQLType {\n    /// The sql type\n    sqlType: string;\n    /// Is nullable?\n    nullable?: boolean;\n    /// Decimal precision\n    precision?: number;\n    /// Decimal scaling\n    scale?: number;\n    /// Timezone\n    timezone?: string;\n    /// Byte width (FixedSizeBinary)\n    byteWidth?: number;\n    /// Key type\n    keyType?: SQLType;\n    /// Value type\n    valueType?: SQLType;\n    /// Fields\n    fields?: SQLField[];\n}\n\nexport function arrowToSQLType(type: arrow.DataType): SQLType {\n    switch (type.typeId) {\n        case arrow.Type.Binary:\n            return { sqlType: 'binary' };\n        case arrow.Type.Bool:\n            return { sqlType: 'bool' };\n        case arrow.Type.Date:\n            return { sqlType: 'date' };\n        case arrow.Type.DateDay:\n            return { sqlType: 'date32[d]' };\n        case arrow.Type.DateMillisecond:\n            return { sqlType: 'date64[ms]' };\n        case arrow.Type.Decimal: {\n            const dec = type as arrow.Decimal;\n            return { sqlType: 'decimal', precision: dec.precision, scale: dec.scale };\n        }\n        case arrow.Type.Float:\n            return { sqlType: 'float' };\n        case arrow.Type.Float16:\n            return { sqlType: 'float16' };\n        case arrow.Type.Float32:\n            return { sqlType: 'float32' };\n        case arrow.Type.Float64:\n            return { sqlType: 'float64' };\n        case arrow.Type.Int:\n            return { sqlType: 'int32' };\n        case arrow.Type.Int16:\n            return { sqlType: 'int16' };\n        case arrow.Type.Int32:\n            return { sqlType: 'int32' };\n        case arrow.Type.Int64:\n            return { sqlType: 'int64' };\n        case arrow.Type.Uint16:\n            return { sqlType: 'uint16' };\n        case arrow.Type.Uint32:\n            return { sqlType: 'uint32' };\n        case arrow.Type.Uint64:\n            return { sqlType: 'uint64' };\n        case arrow.Type.Uint8:\n            return { sqlType: 'uint8' };\n        case arrow.Type.IntervalDayTime:\n            return { sqlType: 'interval[dt]' };\n        case arrow.Type.IntervalYearMonth:\n            return { sqlType: 'interval[m]' };\n        case arrow.Type.List: {\n            const list = type as arrow.List;\n            return {\n                sqlType: 'list',\n                valueType: arrowToSQLType(list.valueType),\n            };\n        }\n        case arrow.Type.FixedSizeBinary: {\n            const bin = type as arrow.FixedSizeBinary;\n            return { sqlType: 'fixedsizebinary', byteWidth: bin.byteWidth };\n        }\n        case arrow.Type.Null:\n            return { sqlType: 'null' };\n        case arrow.Type.Utf8:\n            return { sqlType: 'utf8' };\n        case arrow.Type.Struct: {\n            const struct_ = type as arrow.Struct;\n            return {\n                sqlType: 'struct',\n                fields: struct_.children.map(c => arrowToSQLField(c.name, c.type)),\n            };\n        }\n        case arrow.Type.Map: {\n            const map_ = type as arrow.Map_;\n            return {\n                sqlType: 'map',\n                keyType: arrowToSQLType(map_.keyType),\n                valueType: arrowToSQLType(map_.valueType),\n            };\n        }\n        case arrow.Type.Time:\n            return { sqlType: 'time[s]' };\n        case arrow.Type.TimeMicrosecond:\n            return { sqlType: 'time[us]' };\n        case arrow.Type.TimeMillisecond:\n            return { sqlType: 'time[ms]' };\n        case arrow.Type.TimeNanosecond:\n            return { sqlType: 'time[ns]' };\n        case arrow.Type.TimeSecond:\n            return { sqlType: 'time[s]' };\n        case arrow.Type.Timestamp: {\n            const ts = type as arrow.Timestamp;\n            return { sqlType: 'timestamp', timezone: ts.timezone || undefined };\n        }\n        case arrow.Type.TimestampSecond: {\n            const ts = type as arrow.TimestampSecond;\n            return { sqlType: 'timestamp[s]', timezone: ts.timezone || undefined };\n        }\n        case arrow.Type.TimestampMicrosecond: {\n            const ts = type as arrow.TimestampMicrosecond;\n            return { sqlType: 'timestamp[us]', timezone: ts.timezone || undefined };\n        }\n        case arrow.Type.TimestampNanosecond: {\n            const ts = type as arrow.TimestampNanosecond;\n            return { sqlType: 'timestamp[ns]', timezone: ts.timezone || undefined };\n        }\n        case arrow.Type.TimestampMillisecond: {\n            const ts = type as arrow.TimestampMillisecond;\n            return { sqlType: 'timestamp[ms]', timezone: ts.timezone || undefined };\n        }\n    }\n    throw new Error(`unsupported arrow type: ${type.toString()}`);\n}\n\nexport type SQLField = SQLType & { name: string };\n\nexport function arrowToSQLField(name: string, type: arrow.DataType): SQLField {\n    const t = arrowToSQLType(type) as SQLField;\n    t.name = name;\n    return t;\n}\n", "import {\n    WorkerRequestType,\n    WorkerResponseType,\n    WorkerResponseVariant,\n    WorkerTaskVariant,\n    WorkerTask,\n    ConnectionID,\n    WorkerTaskReturnType,\n} from './worker_request';\nimport { AsyncDuckDBBindings } from './async_bindings_interface';\nimport { Logger } from '../log';\nimport { AsyncDuckDBConnection } from './async_connection';\nimport { CSVInsertOptions, JSONInsertOptions, ArrowInsertOptions } from '../bindings/insert_options';\nimport { ScriptTokens } from '../bindings/tokens';\nimport { FileStatistics } from '../bindings/file_stats';\nimport { DuckDBConfig } from '../bindings/config';\nimport { InstantiationProgress } from '../bindings/progress';\nimport { arrowToSQLField } from '../json_typedef';\nimport { WebFile } from '../bindings/web_file';\nimport { DuckDBDataProtocol } from '../bindings';\nimport { ProgressEntry } from '../log';\n\nconst TEXT_ENCODER = new TextEncoder();\n\nexport class AsyncDuckDB implements AsyncDuckDBBindings {\n    /** The message handler */\n    protected readonly _onMessageHandler: (event: MessageEvent) => void;\n    /** The error handler */\n    protected readonly _onErrorHandler: (event: ErrorEvent) => void;\n    /** The close handler */\n    protected readonly _onCloseHandler: () => void;\n\n    /** Instantiate the module */\n    protected _onInstantiationProgress: ((p: InstantiationProgress) => void)[] = [];\n\n    /** Progress callbacks */\n    protected _onExecutionProgress: ((p: ProgressEntry) => void)[] = [];\n\n    /** The logger */\n    protected readonly _logger: Logger;\n    /** The worker */\n    protected _worker: Worker | null = null;\n    /** The promise for the worker shutdown */\n    protected _workerShutdownPromise: Promise<null> | null = null;\n    /** Make the worker as terminated */\n    protected _workerShutdownResolver: (value: PromiseLike<null> | null) => void = () => {};\n\n    /** The next message id */\n    protected _nextMessageId = 0;\n    /** The pending requests */\n    protected _pendingRequests: Map<number, WorkerTaskVariant> = new Map();\n\n    constructor(logger: Logger, worker: Worker | null = null) {\n        this._logger = logger;\n        this._onMessageHandler = this.onMessage.bind(this);\n        this._onErrorHandler = this.onError.bind(this);\n        this._onCloseHandler = this.onClose.bind(this);\n        if (worker != null) this.attach(worker);\n    }\n\n    /** Get the logger */\n    public get logger(): Logger {\n        return this._logger;\n    }\n\n    /** Attach to worker */\n    protected attach(worker: Worker): void {\n        this._worker = worker;\n        this._worker.addEventListener('message', this._onMessageHandler);\n        this._worker.addEventListener('error', this._onErrorHandler);\n        this._worker.addEventListener('close', this._onCloseHandler);\n        this._workerShutdownPromise = new Promise<null>(\n            (resolve: (value: PromiseLike<null> | null) => void, _reject: (reason?: void) => void) => {\n                this._workerShutdownResolver = resolve;\n            },\n        );\n    }\n\n    /** Detach from worker */\n    public detach(): void {\n        if (!this._worker) return;\n        this._worker.removeEventListener('message', this._onMessageHandler);\n        this._worker.removeEventListener('error', this._onErrorHandler);\n        this._worker.removeEventListener('close', this._onCloseHandler);\n        this._worker = null;\n        this._workerShutdownResolver(null);\n        this._workerShutdownPromise = null;\n        this._workerShutdownResolver = () => {};\n    }\n\n    /** Kill the worker */\n    public async terminate(): Promise<void> {\n        if (!this._worker) return;\n        this._worker.terminate();\n        //await this._workerShutdownPromise; TODO deadlocking in karma?\n        this._worker = null;\n        this._workerShutdownPromise = null;\n        this._workerShutdownResolver = () => {};\n    }\n\n    /** Post a task */\n    protected async postTask<W extends WorkerTaskVariant>(\n        task: W,\n        transfer: ArrayBuffer[] = [],\n    ): Promise<WorkerTaskReturnType<W>> {\n        if (!this._worker) {\n            console.error('cannot send a message since the worker is not set!');\n            return undefined as any;\n        }\n        const mid = this._nextMessageId++;\n        this._pendingRequests.set(mid, task);\n        this._worker.postMessage(\n            {\n                messageId: mid,\n                type: task.type,\n                data: task.data,\n            },\n            transfer,\n        );\n        return (await task.promise) as WorkerTaskReturnType<W>;\n    }\n\n    /** Received a message */\n    protected onMessage(event: MessageEvent): void {\n        // Unassociated responses?\n        const response = event.data as WorkerResponseVariant;\n        switch (response.type) {\n            // Request failed?\n            case WorkerResponseType.PROGRESS_UPDATE: {\n                for (const p of this._onExecutionProgress) {\n                    p(response.data);\n\t\t}\n                return;\n            }\n            case WorkerResponseType.LOG: {\n                this._logger.log(response.data);\n                return;\n            }\n            // Call progress callback\n            case WorkerResponseType.INSTANTIATE_PROGRESS: {\n                for (const p of this._onInstantiationProgress) {\n                    p(response.data);\n                }\n                return;\n            }\n        }\n\n        // Get associated task\n        const task = this._pendingRequests.get(response.requestId);\n        if (!task) {\n            console.warn(`unassociated response: [${response.requestId}, ${response.type.toString()}]`);\n            return;\n        }\n        this._pendingRequests.delete(response.requestId);\n\n        // Request failed?\n        if (response.type == WorkerResponseType.ERROR) {\n            // Workaround for Firefox not being able to perform structured-clone on Native Errors\n            // https://bugzilla.mozilla.org/show_bug.cgi?id=1556604\n            const e = new Error(response.data.message);\n            e.name = response.data.name;\n            if (Object.getOwnPropertyDescriptor(e, 'stack')?.writable) {\n                e.stack = response.data.stack;\n            }\n            task.promiseRejecter(e);\n            return;\n        }\n\n        // Otherwise differentiate between the tasks first\n        switch (task.type) {\n            case WorkerRequestType.CLOSE_PREPARED:\n            case WorkerRequestType.COLLECT_FILE_STATISTICS:\n            case WorkerRequestType.REGISTER_OPFS_FILE_NAME:\n            case WorkerRequestType.COPY_FILE_TO_PATH:\n            case WorkerRequestType.DISCONNECT:\n            case WorkerRequestType.DROP_FILE:\n            case WorkerRequestType.DROP_FILES:\n            case WorkerRequestType.FLUSH_FILES:\n            case WorkerRequestType.INSERT_ARROW_FROM_IPC_STREAM:\n            case WorkerRequestType.INSERT_CSV_FROM_PATH:\n            case WorkerRequestType.INSERT_JSON_FROM_PATH:\n            case WorkerRequestType.OPEN:\n            case WorkerRequestType.PING:\n            case WorkerRequestType.REGISTER_FILE_BUFFER:\n            case WorkerRequestType.REGISTER_FILE_HANDLE:\n            case WorkerRequestType.REGISTER_FILE_URL:\n            case WorkerRequestType.RESET:\n                if (response.type == WorkerResponseType.OK) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.INSTANTIATE:\n                this._onInstantiationProgress = [];\n                if (response.type == WorkerResponseType.OK) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.GLOB_FILE_INFOS:\n                if (response.type == WorkerResponseType.FILE_INFOS) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.GET_VERSION:\n                if (response.type == WorkerResponseType.VERSION_STRING) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.GET_FEATURE_FLAGS:\n                if (response.type == WorkerResponseType.FEATURE_FLAGS) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.GET_TABLE_NAMES:\n                if (response.type == WorkerResponseType.TABLE_NAMES) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.TOKENIZE:\n                if (response.type == WorkerResponseType.SCRIPT_TOKENS) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.COPY_FILE_TO_BUFFER:\n                if (response.type == WorkerResponseType.FILE_BUFFER) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.EXPORT_FILE_STATISTICS:\n                if (response.type == WorkerResponseType.FILE_STATISTICS) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.CONNECT:\n                if (response.type == WorkerResponseType.CONNECTION_INFO) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.RUN_PREPARED:\n            case WorkerRequestType.RUN_QUERY:\n                if (response.type == WorkerResponseType.QUERY_RESULT) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.SEND_PREPARED:\n                if (response.type == WorkerResponseType.QUERY_RESULT_HEADER) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.START_PENDING_QUERY:\n                if (response.type == WorkerResponseType.QUERY_RESULT_HEADER_OR_NULL) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.POLL_PENDING_QUERY:\n                if (response.type == WorkerResponseType.QUERY_RESULT_HEADER_OR_NULL) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.CANCEL_PENDING_QUERY:\n                this._onInstantiationProgress = [];\n                if (response.type == WorkerResponseType.SUCCESS) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.FETCH_QUERY_RESULTS:\n                if (response.type == WorkerResponseType.QUERY_RESULT_CHUNK) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n            case WorkerRequestType.CREATE_PREPARED:\n                if (response.type == WorkerResponseType.PREPARED_STATEMENT_ID) {\n                    task.promiseResolver(response.data);\n                    return;\n                }\n                break;\n        }\n        task.promiseRejecter(new Error(`unexpected response type: ${response.type.toString()}`));\n    }\n\n    /** Received an error */\n    protected onError(event: ErrorEvent): void {\n        console.error(event);\n        console.error(`error in duckdb worker: ${event.message}`);\n        this._pendingRequests.clear();\n    }\n\n    /** The worker was closed */\n    protected onClose(): void {\n        this._workerShutdownResolver(null);\n        if (this._pendingRequests.size != 0) {\n            console.warn(`worker terminated with ${this._pendingRequests.size} pending requests`);\n            return;\n        }\n        this._pendingRequests.clear();\n    }\n\n    /** Reset the duckdb */\n    public async reset(): Promise<null> {\n        const task = new WorkerTask<WorkerRequestType.RESET, null, null>