{
  "version": 3,
  "sources": ["index.js", "lib/env-utils/version.js", "lib/env-utils/assert.js", "lib/env-utils/globals.js", "lib/worker-farm/worker-job.js", "lib/node/worker_threads-browser.js", "lib/worker-utils/get-loadable-worker-url.js", "lib/worker-utils/get-transfer-list.js", "lib/worker-farm/worker-thread.js", "lib/worker-farm/worker-pool.js", "lib/worker-farm/worker-farm.js", "lib/worker-farm/worker-body.js", "lib/worker-api/get-worker-url.js", "lib/worker-api/process-on-worker.js", "lib/async-queue/async-queue.js", "lib/worker-api/create-worker.js", "lib/worker-api/validate-worker-version.js", "lib/library-utils/library-utils.js", "lib/process-utils/child-process-proxy.js", "lib/process-utils/process-utils.js"],
  "sourcesContent": ["// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { VERSION } from \"./lib/env-utils/version.js\";\n// GENERAL UTILS\nexport { assert } from \"./lib/env-utils/assert.js\";\nexport { isBrowser, isWorker } from \"./lib/env-utils/globals.js\";\n// WORKER UTILS - TYPES\nexport { default as WorkerJob } from \"./lib/worker-farm/worker-job.js\";\nexport { default as WorkerThread } from \"./lib/worker-farm/worker-thread.js\";\n// WORKER FARMS\nexport { default as WorkerFarm } from \"./lib/worker-farm/worker-farm.js\";\nexport { default as WorkerPool } from \"./lib/worker-farm/worker-pool.js\";\nexport { default as WorkerBody } from \"./lib/worker-farm/worker-body.js\";\nexport { processOnWorker, canProcessOnWorker } from \"./lib/worker-api/process-on-worker.js\";\nexport { createWorker } from \"./lib/worker-api/create-worker.js\";\n// WORKER UTILS - EXPORTS\nexport { getWorkerURL } from \"./lib/worker-api/get-worker-url.js\";\nexport { validateWorkerVersion } from \"./lib/worker-api/validate-worker-version.js\";\nexport { getTransferList, getTransferListForWriter } from \"./lib/worker-utils/get-transfer-list.js\";\n// LIBRARY UTILS\nexport { getLibraryUrl, loadLibrary } from \"./lib/library-utils/library-utils.js\";\n// PARSER UTILS\nexport { default as AsyncQueue } from \"./lib/async-queue/async-queue.js\";\n// PROCESS UTILS\nexport { default as ChildProcessProxy } from \"./lib/process-utils/child-process-proxy.js\";\n// WORKER OBJECTS\n/** A null worker to test that worker processing is functional */\nexport const NullWorker = {\n    id: 'null',\n    name: 'null',\n    module: 'worker-utils',\n    version: VERSION,\n    options: {\n        null: {}\n    }\n};\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\n// Version constant cannot be imported, it needs to correspond to the build version of **this** module.\n/**\n * TODO - unpkg.com doesn't seem to have a `latest` specifier for alpha releases...\n * 'beta' on beta branch, 'latest' on prod branch\n */\nexport const NPM_TAG = 'latest';\nfunction getVersion() {\n    if (!globalThis._loadersgl_?.version) {\n        globalThis._loadersgl_ = globalThis._loadersgl_ || {};\n        // __VERSION__ is injected by babel-plugin-version-inline\n        if (typeof \"4.3.2\" === 'undefined') {\n            // eslint-disable-next-line\n            console.warn('loaders.gl: The __VERSION__ variable is not injected using babel plugin. Latest unstable workers would be fetched from the CDN.');\n            globalThis._loadersgl_.version = NPM_TAG;\n        }\n        else {\n            globalThis._loadersgl_.version = \"4.3.2\";\n        }\n    }\n    return globalThis._loadersgl_.version;\n}\nexport const VERSION = getVersion();\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\n// Replacement for the external assert method to reduce bundle size\n// Note: We don't use the second \"message\" argument in calling code,\n// so no need to support it here\n/** Throws an `Error` with the optional `message` if `condition` is falsy */\nexport function assert(condition, message) {\n    if (!condition) {\n        throw new Error(message || 'loaders.gl assertion failed.');\n    }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\n// Purpose: include this in your module to avoids adding dependencies on\n// micro modules like 'global' and 'is-browser';\n/* eslint-disable no-restricted-globals */\nconst globals = {\n    self: typeof self !== 'undefined' && self,\n    window: typeof window !== 'undefined' && window,\n    global: typeof global !== 'undefined' && global,\n    document: typeof document !== 'undefined' && document\n};\nconst self_ = globals.self || globals.window || globals.global || {};\nconst window_ = globals.window || globals.self || globals.global || {};\nconst global_ = globals.global || globals.self || globals.window || {};\nconst document_ = globals.document || {};\nexport { self_ as self, window_ as window, global_ as global, document_ as document };\n/** true if running in the browser, false if running in Node.js */\nexport const isBrowser = \n// @ts-ignore process.browser\ntypeof process !== 'object' || String(process) !== '[object process]' || process.browser;\n/** true if running on a worker thread */\nexport const isWorker = typeof importScripts === 'function';\n/** true if running on a mobile device */\nexport const isMobile = typeof window !== 'undefined' && typeof window.orientation !== 'undefined';\n// Extract node major version\nconst matches = typeof process !== 'undefined' && process.version && /v([0-9]*)/.exec(process.version);\n/** Version of Node.js if running under Node, otherwise 0 */\nexport const nodeVersion = (matches && parseFloat(matches[1])) || 0;\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { assert } from \"../env-utils/assert.js\";\n/**\n * Represents one Job handled by a WorkerPool or WorkerFarm\n */\nexport default class WorkerJob {\n    name;\n    workerThread;\n    isRunning = true;\n    /** Promise that resolves when Job is done */\n    result;\n    _resolve = () => { };\n    _reject = () => { };\n    constructor(jobName, workerThread) {\n        this.name = jobName;\n        this.workerThread = workerThread;\n        this.result = new Promise((resolve, reject) => {\n            this._resolve = resolve;\n            this._reject = reject;\n        });\n    }\n    /**\n     * Send a message to the job's worker thread\n     * @param data any data structure, ideally consisting mostly of transferrable objects\n     */\n    postMessage(type, payload) {\n        this.workerThread.postMessage({\n            source: 'loaders.gl', // Lets worker ignore unrelated messages\n            type,\n            payload\n        });\n    }\n    /**\n     * Call to resolve the `result` Promise with the supplied value\n     */\n    done(value) {\n        assert(this.isRunning);\n        this.isRunning = false;\n        this._resolve(value);\n    }\n    /**\n     * Call to reject the `result` Promise with the supplied error\n     */\n    error(error) {\n        assert(this.isRunning);\n        this.isRunning = false;\n        this._reject(error);\n    }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\n/** Browser polyfill for Node.js built-in `worker_threads` module.\n * These fills are non-functional, and just intended to ensure that\n * `import 'worker_threads` doesn't break browser builds.\n * The replacement is done in package.json browser field\n */\nexport class NodeWorker {\n    terminate() { }\n}\nexport const parentPort = null;\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { assert } from \"../env-utils/assert.js\";\nconst workerURLCache = new Map();\n/**\n * Creates a loadable URL from worker source or URL\n * that can be used to create `Worker` instances.\n * Due to CORS issues it may be necessary to wrap a URL in a small importScripts\n * @param props\n * @param props.source Worker source\n * @param props.url Worker URL\n * @returns loadable url\n */\nexport function getLoadableWorkerURL(props) {\n    assert((props.source && !props.url) || (!props.source && props.url)); // Either source or url must be defined\n    let workerURL = workerURLCache.get(props.source || props.url);\n    if (!workerURL) {\n        // Differentiate worker urls from worker source code\n        if (props.url) {\n            workerURL = getLoadableWorkerURLFromURL(props.url);\n            workerURLCache.set(props.url, workerURL);\n        }\n        if (props.source) {\n            workerURL = getLoadableWorkerURLFromSource(props.source);\n            workerURLCache.set(props.source, workerURL);\n        }\n    }\n    assert(workerURL);\n    return workerURL;\n}\n/**\n * Build a loadable worker URL from worker URL\n * @param url\n * @returns loadable URL\n */\nfunction getLoadableWorkerURLFromURL(url) {\n    // A local script url, we can use it to initialize a Worker directly\n    if (!url.startsWith('http')) {\n        return url;\n    }\n    // A remote script, we need to use `importScripts` to load from different origin\n    const workerSource = buildScriptSource(url);\n    return getLoadableWorkerURLFromSource(workerSource);\n}\n/**\n * Build a loadable worker URL from worker source\n * @param workerSource\n * @returns loadable url\n */\nfunction getLoadableWorkerURLFromSource(workerSource) {\n    const blob = new Blob([workerSource], { type: 'application/javascript' });\n    return URL.createObjectURL(blob);\n}\n/**\n * Per spec, worker cannot be initialized with a script from a different origin\n * However a local worker script can still import scripts from other origins,\n * so we simply build a wrapper script.\n *\n * @param workerUrl\n * @returns source\n */\nfunction buildScriptSource(workerUrl) {\n    return `\\\ntry {\n  importScripts('${workerUrl}');\n} catch (error) {\n  console.error(error);\n  throw error;\n}`;\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\n// NOTE - there is a copy of this function is both in core and loader-utils\n// core does not need all the utils in loader-utils, just this one.\n/**\n * Returns an array of Transferrable objects that can be used with postMessage\n * https://developer.mozilla.org/en-US/docs/Web/API/Worker/postMessage\n * @param object data to be sent via postMessage\n * @param recursive - not for application use\n * @param transfers - not for application use\n * @returns a transfer list that can be passed to postMessage\n */\nexport function getTransferList(object, recursive = true, transfers) {\n    // Make sure that items in the transfer list is unique\n    const transfersSet = transfers || new Set();\n    if (!object) {\n        // ignore\n    }\n    else if (isTransferable(object)) {\n        transfersSet.add(object);\n    }\n    else if (isTransferable(object.buffer)) {\n        // Typed array\n        transfersSet.add(object.buffer);\n    }\n    else if (ArrayBuffer.isView(object)) {\n        // object is a TypeArray viewing into a SharedArrayBuffer (not transferable)\n        // Do not iterate through the content in this case\n    }\n    else if (recursive && typeof object === 'object') {\n        for (const key in object) {\n            // Avoid perf hit - only go one level deep\n            getTransferList(object[key], recursive, transfersSet);\n        }\n    }\n    // If transfers is defined, is internal recursive call\n    // Otherwise it's called by the user\n    return transfers === undefined ? Array.from(transfersSet) : [];\n}\n// https://developer.mozilla.org/en-US/docs/Web/API/Transferable\nfunction isTransferable(object) {\n    if (!object) {\n        return false;\n    }\n    if (object instanceof ArrayBuffer) {\n        return true;\n    }\n    if (typeof MessagePort !== 'undefined' && object instanceof MessagePort) {\n        return true;\n    }\n    if (typeof ImageBitmap !== 'undefined' && object instanceof ImageBitmap) {\n        return true;\n    }\n    // @ts-ignore\n    if (typeof OffscreenCanvas !== 'undefined' && object instanceof OffscreenCanvas) {\n        return true;\n    }\n    return false;\n}\n/**\n * Recursively drop non serializable values like functions and regexps.\n * @param object\n */\nexport function getTransferListForWriter(object) {\n    if (object === null) {\n        return {};\n    }\n    const clone = Object.assign({}, object);\n    Object.keys(clone).forEach((key) => {\n        // Typed Arrays and Arrays are passed with no change\n        if (typeof object[key] === 'object' &&\n            !ArrayBuffer.isView(object[key]) &&\n            !(object[key] instanceof Array)) {\n            clone[key] = getTransferListForWriter(object[key]);\n        }\n        else if (typeof clone[key] === 'function' || clone[key] instanceof RegExp) {\n            clone[key] = {};\n        }\n        else {\n            clone[key] = object[key];\n        }\n    });\n    return clone;\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { NodeWorker } from \"../node/worker_threads.js\";\nimport { isBrowser } from \"../env-utils/globals.js\";\nimport { assert } from \"../env-utils/assert.js\";\nimport { getLoadableWorkerURL } from \"../worker-utils/get-loadable-worker-url.js\";\nimport { getTransferList } from \"../worker-utils/get-transfer-list.js\";\nconst NOOP = () => { };\n/**\n * Represents one worker thread\n */\nexport default class WorkerThread {\n    name;\n    source;\n    url;\n    terminated = false;\n    worker;\n    onMessage;\n    onError;\n    _loadableURL = '';\n    /** Checks if workers are supported on this platform */\n    static isSupported() {\n        return ((typeof Worker !== 'undefined' && isBrowser) ||\n            (typeof NodeWorker !== 'undefined' && !isBrowser));\n    }\n    constructor(props) {\n        const { name, source, url } = props;\n        assert(source || url); // Either source or url must be defined\n        this.name = name;\n        this.source = source;\n        this.url = url;\n        this.onMessage = NOOP;\n        this.onError = (error) => console.log(error); // eslint-disable-line\n        this.worker = isBrowser ? this._createBrowserWorker() : this._createNodeWorker();\n    }\n    /**\n     * Terminate this worker thread\n     * @note Can free up significant memory\n     */\n    destroy() {\n        this.onMessage = NOOP;\n        this.onError = NOOP;\n        this.worker.terminate(); // eslint-disable-line @typescript-eslint/no-floating-promises\n        this.terminated = true;\n    }\n    get isRunning() {\n        return Boolean(this.onMessage);\n    }\n    /**\n     * Send a message to this worker thread\n     * @param data any data structure, ideally consisting mostly of transferrable objects\n     * @param transferList If not supplied, calculated automatically by traversing data\n     */\n    postMessage(data, transferList) {\n        transferList = transferList || getTransferList(data);\n        // @ts-ignore\n        this.worker.postMessage(data, transferList);\n    }\n    // PRIVATE\n    /**\n     * Generate a standard Error from an ErrorEvent\n     * @param event\n     */\n    _getErrorFromErrorEvent(event) {\n        // Note Error object does not have the expected fields if loading failed completely\n        // https://developer.mozilla.org/en-US/docs/Web/API/Worker#Event_handlers\n        // https://developer.mozilla.org/en-US/docs/Web/API/ErrorEvent\n        let message = 'Failed to load ';\n        message += `worker ${this.name} from ${this.url}. `;\n        if (event.message) {\n            message += `${event.message} in `;\n        }\n        // const hasFilename = event.filename && !event.filename.startsWith('blob:');\n        // message += hasFilename ? event.filename : this.source.slice(0, 100);\n        if (event.lineno) {\n            message += `:${event.lineno}:${event.colno}`;\n        }\n        return new Error(message);\n    }\n    /**\n     * Creates a worker thread on the browser\n     */\n    _createBrowserWorker() {\n        this._loadableURL = getLoadableWorkerURL({ source: this.source, url: this.url });\n        const worker = new Worker(this._loadableURL, { name: this.name });\n        worker.onmessage = (event) => {\n            if (!event.data) {\n                this.onError(new Error('No data received'));\n            }\n            else {\n                this.onMessage(event.data);\n            }\n        };\n        // This callback represents an uncaught exception in the worker thread\n        worker.onerror = (error) => {\n            this.onError(this._getErrorFromErrorEvent(error));\n            this.terminated = true;\n        };\n        // TODO - not clear when this would be called, for now just log in case it happens\n        worker.onmessageerror = (event) => console.error(event); // eslint-disable-line\n        return worker;\n    }\n    /**\n     * Creates a worker thread in node.js\n     * @todo https://nodejs.org/api/async_hooks.html#async-resource-worker-pool\n     */\n    _createNodeWorker() {\n        let worker;\n        if (this.url) {\n            // Make sure relative URLs start with './'\n            const absolute = this.url.includes(':/') || this.url.startsWith('/');\n            const url = absolute ? this.url : `./${this.url}`;\n            // console.log('Starting work from', url);\n            worker = new NodeWorker(url, { eval: false });\n        }\n        else if (this.source) {\n            worker = new NodeWorker(this.source, { eval: true });\n        }\n        else {\n            throw new Error('no worker');\n        }\n        worker.on('message', (data) => {\n            // console.error('message', data);\n            this.onMessage(data);\n        });\n        worker.on('error', (error) => {\n            // console.error('error', error);\n            this.onError(error);\n        });\n        worker.on('exit', (code) => {\n            // console.error('exit', code);\n        });\n        return worker;\n    }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { isMobile, isBrowser } from \"../env-utils/globals.js\";\nimport WorkerThread from \"./worker-thread.js\";\nimport WorkerJob from \"./worker-job.js\";\n/**\n * Process multiple data messages with small pool of identical workers\n */\nexport default class WorkerPool {\n    name = 'unnamed';\n    source; // | Function;\n    url;\n    maxConcurrency = 1;\n    maxMobileConcurrency = 1;\n    onDebug = () => { };\n    reuseWorkers = true;\n    props = {};\n    jobQueue = [];\n    idleQueue = [];\n    count = 0;\n    isDestroyed = false;\n    /** Checks if workers are supported on this platform */\n    static isSupported() {\n        return WorkerThread.isSupported();\n    }\n    /**\n     * @param processor - worker function\n     * @param maxConcurrency - max count of workers\n     */\n    constructor(props) {\n        this.source = props.source;\n        this.url = props.url;\n        this.setProps(props);\n    }\n    /**\n     * Terminates all workers in the pool\n     * @note Can free up significant memory\n     */\n    destroy() {\n        // Destroy idle workers, active Workers will be destroyed on completion\n        this.idleQueue.forEach((worker) => worker.destroy());\n        this.isDestroyed = true;\n    }\n    setProps(props) {\n        this.props = { ...this.props, ...props };\n        if (props.name !== undefined) {\n            this.name = props.name;\n        }\n        if (props.maxConcurrency !== undefined) {\n            this.maxConcurrency = props.maxConcurrency;\n        }\n        if (props.maxMobileConcurrency !== undefined) {\n            this.maxMobileConcurrency = props.maxMobileConcurrency;\n        }\n        if (props.reuseWorkers !== undefined) {\n            this.reuseWorkers = props.reuseWorkers;\n        }\n        if (props.onDebug !== undefined) {\n            this.onDebug = props.onDebug;\n        }\n    }\n    async startJob(name, onMessage = (job, type, data) => job.done(data), onError = (job, error) => job.error(error)) {\n        // Promise resolves when thread starts working on this job\n        const startPromise = new Promise((onStart) => {\n            // Promise resolves when thread completes or fails working on this job\n            this.jobQueue.push({ name, onMessage, onError, onStart });\n            return this;\n        });\n        this._startQueuedJob(); // eslint-disable-line @typescript-eslint/no-floating-promises\n        return await startPromise;\n    }\n    // PRIVATE\n    /**\n     * Starts first queued job if worker is available or can be created\n     * Called when job is started and whenever a worker returns to the idleQueue\n     */\n    async _startQueuedJob() {\n        if (!this.jobQueue.length) {\n            return;\n        }\n        const workerThread = this._getAvailableWorker();\n        if (!workerThread) {\n            return;\n        }\n        // We have a worker, dequeue and start the job\n        const queuedJob = this.jobQueue.shift();\n        if (queuedJob) {\n            // Emit a debug event\n            // @ts-ignore\n            this.onDebug({\n                message: 'Starting job',\n                name: queuedJob.name,\n                workerThread,\n                backlog: this.jobQueue.length\n            });\n            // Create a worker job to let the app access thread and manage job completion\n            const job = new WorkerJob(queuedJob.name, workerThread);\n            // Set the worker thread's message handlers\n            workerThread.onMessage = (data) => queuedJob.onMessage(job, data.type, data.payload);\n            workerThread.onError = (error) => queuedJob.onError(job, error);\n            // Resolve the start promise so that the app can start sending messages to worker\n            queuedJob.onStart(job);\n            // Wait for the app to signal that the job is complete, then return worker to queue\n            try {\n                await job.result;\n            }\n            catch (error) {\n                // eslint-disable-next-line no-console\n                console.error(`Worker exception: ${error}`);\n            }\n            finally {\n                this.returnWorkerToQueue(workerThread);\n            }\n        }\n    }\n    /**\n     * Returns a worker to the idle queue\n     * Destroys the worker if\n     *  - pool is destroyed\n     *  - if this pool doesn't reuse workers\n     *  - if maxConcurrency has been lowered\n     * @param worker\n     */\n    returnWorkerToQueue(worker) {\n        const shouldDestroyWorker = \n        // Workers on Node.js prevent the process from exiting.\n        // Until we figure out how to close them before exit, we always destroy them\n        !isBrowser ||\n            // If the pool is destroyed, there is no reason to keep the worker around\n            this.isDestroyed ||\n            // If the app has disabled worker reuse, any completed workers should be destroyed\n            !this.reuseWorkers ||\n            // If concurrency has been lowered, this worker might be surplus to requirements\n            this.count > this._getMaxConcurrency();\n        if (shouldDestroyWorker) {\n            worker.destroy();\n            this.count--;\n        }\n        else {\n            this.idleQueue.push(worker);\n        }\n        if (!this.isDestroyed) {\n            this._startQueuedJob(); // eslint-disable-line @typescript-eslint/no-floating-promises\n        }\n    }\n    /**\n     * Returns idle worker or creates new worker if maxConcurrency has not been reached\n     */\n    _getAvailableWorker() {\n        // If a worker has completed and returned to the queue, it can be used\n        if (this.idleQueue.length > 0) {\n            return this.idleQueue.shift() || null;\n        }\n        // Create fresh worker if we haven't yet created the max amount of worker threads for this worker source\n        if (this.count < this._getMaxConcurrency()) {\n            this.count++;\n            const name = `${this.name.toLowerCase()} (#${this.count} of ${this.maxConcurrency})`;\n            return new WorkerThread({ name, source: this.source, url: this.url });\n        }\n        // No worker available, have to wait\n        return null;\n    }\n    _getMaxConcurrency() {\n        return isMobile ? this.maxMobileConcurrency : this.maxConcurrency;\n    }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport WorkerPool from \"./worker-pool.js\";\nimport WorkerThread from \"./worker-thread.js\";\nconst DEFAULT_PROPS = {\n    maxConcurrency: 3,\n    maxMobileConcurrency: 1,\n    reuseWorkers: true,\n    onDebug: () => { }\n};\n/**\n * Process multiple jobs with a \"farm\" of different workers in worker pools.\n */\nexport default class WorkerFarm {\n    props;\n    workerPools = new Map();\n    // singleton\n    static _workerFarm;\n    /** Checks if workers are supported on this platform */\n    static isSupported() {\n        return WorkerThread.isSupported();\n    }\n    /** Get the singleton instance of the global worker farm */\n    static getWorkerFarm(props = {}) {\n        WorkerFarm._workerFarm = WorkerFarm._workerFarm || new WorkerFarm({});\n        WorkerFarm._workerFarm.setProps(props);\n        return WorkerFarm._workerFarm;\n    }\n    /** get global instance with WorkerFarm.getWorkerFarm() */\n    constructor(props) {\n        this.props = { ...DEFAULT_PROPS };\n        this.setProps(props);\n        /** @type Map<string, WorkerPool>} */\n        this.workerPools = new Map();\n    }\n    /**\n     * Terminate all workers in the farm\n     * @note Can free up significant memory\n     */\n    destroy() {\n        for (const workerPool of this.workerPools.values()) {\n            workerPool.destroy();\n        }\n        this.workerPools = new Map();\n    }\n    /**\n     * Set props used when initializing worker pools\n     * @param props\n     */\n    setProps(props) {\n        this.props = { ...this.props, ...props };\n        // Update worker pool props\n        for (const workerPool of this.workerPools.values()) {\n            workerPool.setProps(this._getWorkerPoolProps());\n        }\n    }\n    /**\n     * Returns a worker pool for the specified worker\n     * @param options - only used first time for a specific worker name\n     * @param options.name - the name of the worker - used to identify worker pool\n     * @param options.url -\n     * @param options.source -\n     * @example\n     *   const job = WorkerFarm.getWorkerFarm().getWorkerPool({name, url}).startJob(...);\n     */\n    getWorkerPool(options) {\n        const { name, source, url } = options;\n        let workerPool = this.workerPools.get(name);\n        if (!workerPool) {\n            workerPool = new WorkerPool({\n                name,\n                source,\n                url\n            });\n            workerPool.setProps(this._getWorkerPoolProps());\n            this.workerPools.set(name, workerPool);\n        }\n        return workerPool;\n    }\n    _getWorkerPoolProps() {\n        return {\n            maxConcurrency: this.props.maxConcurrency,\n            maxMobileConcurrency: this.props.maxMobileConcurrency,\n            reuseWorkers: this.props.reuseWorkers,\n            onDebug: this.props.onDebug\n        };\n    }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { getTransferList } from \"../worker-utils/get-transfer-list.js\";\n// import type {TransferListItem} from '../node/worker_threads';\nimport { parentPort } from \"../node/worker_threads.js\";\n/** Vile hack to defeat over-zealous bundlers from stripping out the require */\nasync function getParentPort() {\n    // const isNode = globalThis.process;\n    // let parentPort;\n    // try {\n    //   // prettier-ignore\n    //   eval('globalThis.parentPort = require(\\'worker_threads\\').parentPort'); // eslint-disable-line no-eval\n    //   parentPort = globalThis.parentPort;\n    // } catch {\n    //   try {\n    //     // prettier-ignore\n    //     eval('globalThis.workerThreadsPromise = import(\\'worker_threads\\')'); // eslint-disable-line no-eval\n    //     const workerThreads = await globalThis.workerThreadsPromise;\n    //     parentPort = workerThreads.parentPort;\n    //   } catch (error) {\n    //     console.error((error as Error).message); // eslint-disable-line no-console\n    //   }\n    // }\n    return parentPort;\n}\nconst onMessageWrapperMap = new Map();\n/**\n * Type safe wrapper for worker code\n */\nexport default class WorkerBody {\n    /** Check that we are actually in a worker thread */\n    static async inWorkerThread() {\n        return typeof self !== 'undefined' || Boolean(await getParentPort());\n    }\n    /*\n     * (type: WorkerMessageType, payload: WorkerMessagePayload) => any\n     */\n    static set onmessage(onMessage) {\n        async function handleMessage(message) {\n            const parentPort = await getParentPort();\n            // Confusingly the message itself also has a 'type' field which is always set to 'message'\n            const { type, payload } = parentPort ? message : message.data;\n            // if (!isKnownMessage(message)) {\n            //   return;\n            // }\n            onMessage(type, payload);\n        }\n        getParentPort().then((parentPort) => {\n            if (parentPort) {\n                parentPort.on('message', (message) => {\n                    handleMessage(message);\n                });\n                // if (message == 'exit') { parentPort.unref(); }\n                // eslint-disable-next-line\n                parentPort.on('exit', () => console.debug('Node worker closing'));\n            }\n            else {\n                // eslint-disable-next-line no-restricted-globals\n                globalThis.onmessage = handleMessage;\n            }\n        });\n    }\n    static async addEventListener(onMessage) {\n        let onMessageWrapper = onMessageWrapperMap.get(onMessage);\n        if (!onMessageWrapper) {\n            onMessageWrapper = async (message) => {\n                if (!isKnownMessage(message)) {\n                    return;\n                }\n                const parentPort = await getParentPort();\n                // Confusingly in the browser, the message itself also has a 'type' field which is always set to 'message'\n                const { type, payload } = parentPort ? message : message.data;\n                onMessage(type, payload);\n            };\n        }\n        const parentPort = await getParentPort();\n        if (parentPort) {\n            console.error('not implemented'); // eslint-disable-line\n        }\n        else {\n            globalThis.addEventListener('message', onMessageWrapper);\n        }\n    }\n    static async removeEventListener(onMessage) {\n        const onMessageWrapper = onMessageWrapperMap.get(onMessage);\n        onMessageWrapperMap.delete(onMessage);\n        const parentPort = await getParentPort();\n        if (parentPort) {\n            console.error('not implemented'); // eslint-disable-line\n        }\n        else {\n            globalThis.removeEventListener('message', onMessageWrapper);\n        }\n    }\n    /**\n     * Send a message from a worker to creating thread (main thread)\n     * @param type\n     * @param payload\n     */\n    static async postMessage(type, payload) {\n        const data = { source: 'loaders.gl', type, payload };\n        // console.log('posting message', data);\n        // Cast to Node compatible transfer list\n        const transferList = getTransferList(payload);\n        const parentPort = await getParentPort();\n        if (parentPort) {\n            parentPort.postMessage(data, transferList);\n            // console.log('posted message', data);\n        }\n        else {\n            // @ts-expect-error Outside of worker scopes this call has a third parameter\n            globalThis.postMessage(data, transferList);\n        }\n    }\n}\n// Filter out noise messages sent to workers\nfunction isKnownMessage(message) {\n    const { type, data } = message;\n    return (type === 'message' &&\n        data &&\n        typeof data.source === 'string' &&\n        data.source.startsWith('loaders.gl'));\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { assert } from \"../env-utils/assert.js\";\nimport { isBrowser } from \"../env-utils/globals.js\";\nimport { VERSION, NPM_TAG } from \"../env-utils/version.js\";\n/**\n * Gets worker object's name (for debugging in Chrome thread inspector window)\n */\nexport function getWorkerName(worker) {\n    const warning = worker.version !== VERSION ? ` (worker-utils@${VERSION})` : '';\n    return `${worker.name}@${worker.version}${warning}`;\n}\n/**\n * Generate a worker URL based on worker object and options\n * @returns A URL to one of the following:\n * - a published worker on unpkg CDN\n * - a local test worker\n * - a URL provided by the user in options\n */\nexport function getWorkerURL(worker, options = {}) {\n    const workerOptions = options[worker.id] || {};\n    const workerFile = isBrowser ? `${worker.id}-worker.js` : `${worker.id}-worker-node.js`;\n    let url = workerOptions.workerUrl;\n    // HACK: Allow for non-nested workerUrl for the CompressionWorker.\n    // For the compression worker, workerOptions is currently not nested correctly. For most loaders,\n    // you'd have options within an object, i.e. `{mvt: {coordinates: ...}}` but the CompressionWorker\n    // puts options at the top level, not within a `compression` key (its `id`). For this reason, the\n    // above `workerOptions` will always be a string (i.e. `'gzip'`) for the CompressionWorker. To not\n    // break backwards compatibility, we allow the CompressionWorker to have options at the top level.\n    if (!url && worker.id === 'compression') {\n        url = options.workerUrl;\n    }\n    // If URL is test, generate local loaders.gl url\n    // @ts-ignore _workerType\n    if (options._workerType === 'test') {\n        if (isBrowser) {\n            url = `modules/${worker.module}/dist/${workerFile}`;\n        }\n        else {\n            // In the test environment the ts-node loader requires TypeScript code\n            url = `modules/${worker.module}/src/workers/${worker.id}-worker-node.ts`;\n        }\n    }\n    // If url override is not provided, generate a URL to published version on npm CDN unpkg.com\n    if (!url) {\n        // GENERATE\n        let version = worker.version;\n        // On master we need to load npm alpha releases published with the `beta` tag\n        if (version === 'latest') {\n            // throw new Error('latest worker version specified');\n            version = NPM_TAG;\n        }\n        const versionTag = version ? `@${version}` : '';\n        url = `https://unpkg.com/@loaders.gl/${worker.module}${versionTag}/dist/${workerFile}`;\n    }\n    assert(url);\n    // Allow user to override location\n    return url;\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport WorkerFarm from \"../worker-farm/worker-farm.js\";\nimport { getWorkerURL, getWorkerName } from \"./get-worker-url.js\";\nimport { getTransferListForWriter } from \"../worker-utils/get-transfer-list.js\";\n/**\n * Determines if we can parse with worker\n * @param loader\n * @param data\n * @param options\n */\nexport function canProcessOnWorker(worker, options) {\n    if (!WorkerFarm.isSupported()) {\n        return false;\n    }\n    return worker.worker && options?.worker;\n}\n/**\n * This function expects that the worker thread sends certain messages,\n * Creating such a worker can be automated if the worker is wrapper by a call to\n * createWorker in @loaders.gl/worker-utils.\n */\nexport async function processOnWorker(worker, data, options = {}, context = {}) {\n    const name = getWorkerName(worker);\n    const workerFarm = WorkerFarm.getWorkerFarm(options);\n    const { source } = options;\n    const workerPoolProps = { name, source };\n    if (!source) {\n        workerPoolProps.url = getWorkerURL(worker, options);\n    }\n    const workerPool = workerFarm.getWorkerPool(workerPoolProps);\n    const jobName = options.jobName || worker.name;\n    const job = await workerPool.startJob(jobName, \n    // eslint-disable-next-line\n    onMessage.bind(null, context));\n    // Kick off the processing in the worker\n    const transferableOptions = getTransferListForWriter(options);\n    job.postMessage('process', { input: data, options: transferableOptions });\n    const result = await job.result;\n    return result.result;\n}\n/**\n * Job completes when we receive the result\n * @param job\n * @param message\n */\nasync function onMessage(context, job, type, payload) {\n    switch (type) {\n        case 'done':\n            // Worker is done\n            job.done(payload);\n            break;\n        case 'error':\n            // Worker encountered an error\n            job.error(new Error(payload.error));\n            break;\n        case 'process':\n            // Worker is asking for us (main thread) to process something\n            const { id, input, options } = payload;\n            try {\n                if (!context.process) {\n                    job.postMessage('error', { id, error: 'Worker not set up to process on main thread' });\n                    return;\n                }\n                const result = await context.process(input, options);\n                job.postMessage('done', { id, result });\n            }\n            catch (error) {\n                const message = error instanceof Error ? error.message : 'unknown error';\n                job.postMessage('error', { id, error: message });\n            }\n            break;\n        default:\n            // eslint-disable-next-line\n            console.warn(`process-on-worker: unknown message ${type}`);\n    }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\n// From https://github.com/rauschma/async-iter-demo/tree/master/src under MIT license\n// http://2ality.com/2016/10/asynchronous-iteration.html\n/**\n * Async Queue\n * - AsyncIterable: An async iterator can be\n * - Values can be pushed onto the queue\n * @example\n *   const asyncQueue = new AsyncQueue();\n *   setTimeout(() => asyncQueue.enqueue('tick'), 1000);\n *   setTimeout(() => asyncQueue.enqueue(new Error('done')), 10000);\n *   for await (const value of asyncQueue) {\n *     console.log(value); // tick\n *   }\n */\nexport default class AsyncQueue {\n    _values;\n    _settlers;\n    _closed;\n    constructor() {\n        this._values = []; // enqueues > dequeues\n        this._settlers = []; // dequeues > enqueues\n        this._closed = false;\n    }\n    /** Return an async iterator for this queue */\n    [Symbol.asyncIterator]() {\n        return this;\n    }\n    /** Push a new value - the async iterator will yield a promise resolved to this value */\n    push(value) {\n        return this.enqueue(value);\n    }\n    /**\n     * Push a new value - the async iterator will yield a promise resolved to this value\n     * Add an error - the async iterator will yield a promise rejected with this value\n     */\n    enqueue(value) {\n        if (this._closed) {\n            throw new Error('Closed');\n        }\n        if (this._settlers.length > 0) {\n            if (this._values.length > 0) {\n                throw new Error('Illegal internal state');\n            }\n            const settler = this._settlers.shift();\n            if (value instanceof Error) {\n                settler.reject(value);\n            }\n            else {\n                settler.resolve({ value });\n            }\n        }\n        else {\n            this._values.push(value);\n        }\n    }\n    /** Indicate that we not waiting for more values - The async iterator will be done */\n    close() {\n        while (this._settlers.length > 0) {\n            const settler = this._settlers.shift();\n            settler.resolve({ done: true });\n        }\n        this._closed = true;\n    }\n    // ITERATOR IMPLEMENTATION\n    /** @returns a Promise for an IteratorResult */\n    next() {\n        // If values in queue, yield the first value\n        if (this._values.length > 0) {\n            const value = this._values.shift();\n            if (value instanceof Error) {\n                return Promise.reject(value);\n            }\n            return Promise.resolve({ done: false, value });\n        }\n        // If queue is closed, the iterator is done\n        if (this._closed) {\n            if (this._settlers.length > 0) {\n                throw new Error('Illegal internal state');\n            }\n            return Promise.resolve({ done: true, value: undefined });\n        }\n        // Yield a promise that waits for new values to be enqueued\n        return new Promise((resolve, reject) => {\n            this._settlers.push({ resolve, reject });\n        });\n    }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport AsyncQueue from \"../async-queue/async-queue.js\";\nimport WorkerBody from \"../worker-farm/worker-body.js\";\n// import {validateWorkerVersion} from './validate-worker-version';\n/** Counter for jobs */\nlet requestId = 0;\nlet inputBatches;\nlet options;\n/**\n * Set up a WebWorkerGlobalScope to talk with the main thread\n */\nexport async function createWorker(process, processInBatches) {\n    if (!(await WorkerBody.inWorkerThread())) {\n        return;\n    }\n    const context = {\n        process: processOnMainThread\n    };\n    // eslint-disable-next-line complexity\n    WorkerBody.onmessage = async (type, payload) => {\n        try {\n            switch (type) {\n                case 'process':\n                    if (!process) {\n                        throw new Error('Worker does not support atomic processing');\n                    }\n                    const result = await process(payload.input, payload.options || {}, context);\n                    WorkerBody.postMessage('done', { result });\n                    break;\n                case 'process-in-batches':\n                    if (!processInBatches) {\n                        throw new Error('Worker does not support batched processing');\n                    }\n                    inputBatches = new AsyncQueue();\n                    options = payload.options || {};\n                    const resultIterator = processInBatches(inputBatches, options, context);\n                    for await (const batch of resultIterator) {\n                        WorkerBody.postMessage('output-batch', { result: batch });\n                    }\n                    WorkerBody.postMessage('done', {});\n                    break;\n                case 'input-batch':\n                    inputBatches.push(payload.input);\n                    break;\n                case 'input-done':\n                    inputBatches.close();\n                    break;\n                default:\n            }\n        }\n        catch (error) {\n            const message = error instanceof Error ? error.message : '';\n            WorkerBody.postMessage('error', { error: message });\n        }\n    };\n}\nfunction processOnMainThread(arrayBuffer, options = {}) {\n    return new Promise((resolve, reject) => {\n        const id = requestId++;\n        /**\n         */\n        const onMessage = (type, payload) => {\n            if (payload.id !== id) {\n                // not ours\n                return;\n            }\n            switch (type) {\n                case 'done':\n                    WorkerBody.removeEventListener(onMessage);\n                    resolve(payload.result);\n                    break;\n                case 'error':\n                    WorkerBody.removeEventListener(onMessage);\n                    reject(payload.error);\n                    break;\n                default:\n                // ignore\n            }\n        };\n        WorkerBody.addEventListener(onMessage);\n        // Ask the main thread to decode data\n        const payload = { id, input: arrayBuffer, options };\n        WorkerBody.postMessage('process', payload);\n    });\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { assert } from \"../env-utils/assert.js\";\nimport { VERSION } from \"../env-utils/version.js\";\n/**\n * Check if worker is compatible with this library version\n * @param worker\n * @param libVersion\n * @returns `true` if the two versions are compatible\n */\nexport function validateWorkerVersion(worker, coreVersion = VERSION) {\n    assert(worker, 'no worker provided');\n    const workerVersion = worker.version;\n    if (!coreVersion || !workerVersion) {\n        return false;\n    }\n    // TODO enable when fix the __version__ injection\n    // const coreVersions = parseVersion(coreVersion);\n    // const workerVersions = parseVersion(workerVersion);\n    // assert(\n    //   coreVersion.major === workerVersion.major && coreVersion.minor <= workerVersion.minor,\n    //   `worker: ${worker.name} is not compatible. ${coreVersion.major}.${\n    //     coreVersion.minor\n    //   }+ is required.`\n    // );\n    return true;\n}\n// @ts-ignore\n// eslint-disable-next-line @typescript-eslint/no-unused-vars\nfunction parseVersion(version) {\n    const parts = version.split('.').map(Number);\n    return { major: parts[0], minor: parts[1] };\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\n/* global importScripts */\nimport { isBrowser, isWorker } from \"../env-utils/globals.js\";\nimport { assert } from \"../env-utils/assert.js\";\nimport { VERSION } from \"../env-utils/version.js\";\nconst loadLibraryPromises = {}; // promises\n/**\n * Dynamically loads a library (\"module\")\n *\n * - wasm library: Array buffer is returned\n * - js library: Parse JS is returned\n *\n * Method depends on environment\n * - browser - script element is created and installed on document\n * - worker - eval is called on global context\n * - node - file is required\n *\n * @param libraryUrl\n * @param moduleName\n * @param options\n */\nexport async function loadLibrary(libraryUrl, moduleName = null, options = {}, libraryName = null) {\n    if (moduleName) {\n        libraryUrl = getLibraryUrl(libraryUrl, moduleName, options, libraryName);\n    }\n    // Ensure libraries are only loaded once\n    loadLibraryPromises[libraryUrl] =\n        // eslint-disable-next-line @typescript-eslint/no-misused-promises\n        loadLibraryPromises[libraryUrl] || loadLibraryFromFile(libraryUrl);\n    return await loadLibraryPromises[libraryUrl];\n}\n// TODO - sort out how to resolve paths for main/worker and dev/prod\nexport function getLibraryUrl(library, moduleName, options = {}, libraryName = null) {\n    // Check if already a URL\n    if (!options.useLocalLibraries && library.startsWith('http')) {\n        return library;\n    }\n    libraryName = libraryName || library;\n    // Allow application to import and supply libraries through `options.modules`\n    // TODO - See js-module-utils in loader-utils\n    const modules = options.modules || {};\n    if (modules[libraryName]) {\n        return modules[libraryName];\n    }\n    // Load from local files, not from CDN scripts in Node.js\n    // TODO - needs to locate the modules directory when installed!\n    if (!isBrowser) {\n        return `modules/${moduleName}/dist/libs/${libraryName}`;\n    }\n    // In browser, load from external scripts\n    if (options.CDN) {\n        assert(options.CDN.startsWith('http'));\n        return `${options.CDN}/${moduleName}@${VERSION}/dist/libs/${libraryName}`;\n    }\n    // TODO - loading inside workers requires paths relative to worker script location...\n    if (isWorker) {\n        return `../src/libs/${libraryName}`;\n    }\n    return `modules/${moduleName}/src/libs/${libraryName}`;\n}\nasync function loadLibraryFromFile(libraryUrl) {\n    if (libraryUrl.endsWith('wasm')) {\n        return await loadAsArrayBuffer(libraryUrl);\n    }\n    if (!isBrowser) {\n        // TODO - Node doesn't yet support dynamic import from https URLs\n        // try {\n        //   return await import(libraryUrl);\n        // } catch (error) {\n        //   console.error(error);\n        // }\n        try {\n            const { requireFromFile } = globalThis.loaders || {};\n            return await requireFromFile?.(libraryUrl);\n        }\n        catch (error) {\n            console.error(error); // eslint-disable-line no-console\n            return null;\n        }\n    }\n    if (isWorker) {\n        return importScripts(libraryUrl);\n    }\n    // TODO - fix - should be more secure than string parsing since observes CORS\n    // if (isBrowser) {\n    //   return await loadScriptFromFile(libraryUrl);\n    // }\n    const scriptSource = await loadAsText(libraryUrl);\n    return loadLibraryFromString(scriptSource, libraryUrl);\n}\n/*\nasync function loadScriptFromFile(libraryUrl) {\n  const script = document.createElement('script');\n  script.src = libraryUrl;\n  return await new Promise((resolve, reject) => {\n    script.onload = data => {\n      resolve(data);\n    };\n    script.onerror = reject;\n  });\n}\n*/\n// TODO - Needs security audit...\n//  - Raw eval call\n//  - Potentially bypasses CORS\n// Upside is that this separates fetching and parsing\n// we could create a`LibraryLoader` or`ModuleLoader`\nfunction loadLibraryFromString(scriptSource, id) {\n    if (!isBrowser) {\n        const { requireFromString } = globalThis.loaders || {};\n        return requireFromString?.(scriptSource, id);\n    }\n    if (isWorker) {\n        // Use lvalue trick to make eval run in global scope\n        eval.call(globalThis, scriptSource); // eslint-disable-line no-eval\n        // https://stackoverflow.com/questions/9107240/1-evalthis-vs-evalthis-in-javascript\n        // http://perfectionkills.com/global-eval-what-are-the-options/\n        return null;\n    }\n    const script = document.createElement('script');\n    script.id = id;\n    // most browsers like a separate text node but some throw an error. 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  "names": ["onMessage", "options", "onMessage", "parentPort", "options", "options", "process", "options", "onMessage", "payload", "options", "ChildProcess", "ChildProcess", "DEFAULT_PROPS"]
}