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/***/ "./examples/absurd-worker.js":
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/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

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eval("{__webpack_require__.r(__webpack_exports__);\n/* harmony import */ var _jlongster_sql_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! @jlongster/sql.js */ \"./node_modules/@jlongster/sql.js/dist/sql-wasm.js\");\n/* harmony import */ var absurd_sql__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! absurd-sql */ \"./node_modules/absurd-sql/dist/index.js\");\n/* harmony import */ var absurd_sql_dist_indexeddb_backend_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! absurd-sql/dist/indexeddb-backend.js */ \"./node_modules/absurd-sql/dist/indexeddb-backend.js\");\n\n\n\n\nlet db = null;\n\nasync function initDatabase() {\n    const SQL = await _jlongster_sql_js__WEBPACK_IMPORTED_MODULE_0__({ \n        locateFile: file => `/node_modules/@jlongster/sql.js/dist/${file}` \n    });\n    const sqlFS = new absurd_sql__WEBPACK_IMPORTED_MODULE_1__.SQLiteFS(SQL.FS, new absurd_sql_dist_indexeddb_backend_js__WEBPACK_IMPORTED_MODULE_2__[\"default\"]());\n    SQL.register_for_idb(sqlFS);\n\n    SQL.FS.mkdir('/sql');\n    SQL.FS.mount(sqlFS, {}, '/sql');\n\n    const path = '/sql/benchmark.sqlite';\n    \n    // Handle SharedArrayBuffer fallback\n    if (typeof SharedArrayBuffer === 'undefined') {\n        try {\n            let stream = SQL.FS.open(path, 'a+');\n            await stream.node.contents.readIfFallback();\n            SQL.FS.close(stream);\n        } catch (e) {\n            console.warn('SharedArrayBuffer fallback failed, continuing anyway:', e);\n        }\n    }\n\n    db = new SQL.Database(path, { filename: true });\n    db.exec(`\n        PRAGMA page_size=8192;\n        PRAGMA journal_mode=MEMORY;\n    `);\n    \n    return true;\n}\n\n// Message handler\nself.onmessage = async function(e) {\n    const { type, sql, id } = e.data;\n    \n    try {\n        if (type === 'init') {\n            await initDatabase();\n            self.postMessage({ type: 'init', success: true, id });\n        } else if (type === 'exec') {\n            const start = performance.now();\n            db.exec(sql);\n            const duration = performance.now() - start;\n            self.postMessage({ type: 'exec', success: true, duration, id });\n        } else if (type === 'close') {\n            if (db) {\n                db.close();\n                db = null;\n            }\n            self.postMessage({ type: 'close', success: true, id });\n        }\n    } catch (error) {\n        self.postMessage({ \n            type: type, \n            success: false, \n            error: error.message,\n            id \n        });\n    }\n};\n\n\n//# sourceURL=webpack://sqlite-indexeddb-benchmark/./examples/absurd-worker.js?\n}");

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/***/ "./node_modules/@jlongster/sql.js/dist/sql-wasm.js":
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/***/ }),

/***/ "./node_modules/absurd-sql/dist/index.js":
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/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
eval("{__webpack_require__.r(__webpack_exports__);\n/* harmony export */ __webpack_require__.d(__webpack_exports__, {\n/* harmony export */   SQLiteFS: () => (/* binding */ SQLiteFS)\n/* harmony export */ });\nconst ERRNO_CODES = {\n  EPERM: 63,\n  ENOENT: 44\n};\n\n// This implements an emscripten-compatible filesystem that is means\n// to be mounted to the one from `sql.js`. 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/***/ }),

/***/ "./node_modules/absurd-sql/dist/indexeddb-backend.js":
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I didn't see it this clearly in\n    // the docs). At least one of these bytes change when sqlite3 writes\n    // data. We can check this against our in-memory data to see if it's\n    // safe to write (if something changes underneath us, it's not)\n    for (let i = 24; i < 40; i++) {\n      if (localView[i] !== diskView[i]) {\n        return false;\n      }\n    }\n    return true;\n  }\n\n  // One of them is null, so it's only safe if to write if both are\n  // null, otherwise they are different\n  return localData == null && diskData == null;\n}\n\nfunction range(start, end, step) {\n  let r = [];\n  for (let i = start; i <= end; i += step) {\n    r.push(i);\n  }\n  return r;\n}\n\nfunction getBoundaryIndexes(blockSize, start, end) {\n  let startC = start - (start % blockSize);\n  let endC = end - 1 - ((end - 1) % blockSize);\n\n  return range(startC, endC, blockSize);\n}\n\nfunction readChunks(chunks, start, end) {\n  let buffer = new ArrayBuffer(end - start);\n  let bufferView = new Uint8Array(buffer);\n  for (let i = 0; i < chunks.length; i++) {\n    let chunk = chunks[i];\n\n    // TODO: jest has a bug where we can't do `instanceof ArrayBuffer`\n    if (chunk.data.constructor.name !== 'ArrayBuffer') {\n      throw new Error('Chunk data is not an ArrayBuffer');\n    }\n\n    let cstart = 0;\n    let cend = chunk.data.byteLength;\n\n    if (start > chunk.pos) {\n      cstart = start - chunk.pos;\n    }\n    if (end < chunk.pos + chunk.data.byteLength) {\n      cend = end - chunk.pos;\n    }\n\n    if (cstart > chunk.data.byteLength || cend < 0) {\n      continue;\n    }\n\n    let len = cend - cstart;\n\n    bufferView.set(\n      new Uint8Array(chunk.data, cstart, len),\n      chunk.pos - start + cstart\n    );\n  }\n\n  return buffer;\n}\n\nfunction writeChunks(bufferView, blockSize, start, end) {\n  let indexes = getBoundaryIndexes(blockSize, start, end);\n  let cursor = 0;\n\n  return indexes\n    .map(index => {\n      let cstart = 0;\n      let cend = blockSize;\n      if (start > index && start < index + blockSize) {\n        cstart = start - index;\n      }\n      if (end > index && end < index + blockSize) {\n        cend = end - index;\n      }\n\n      let len = cend - cstart;\n      let chunkBuffer = new ArrayBuffer(blockSize);\n\n      if (start > index + blockSize || end <= index) {\n        return null;\n      }\n\n      let off = bufferView.byteOffset + cursor;\n\n      let available = bufferView.buffer.byteLength - off;\n      if (available <= 0) {\n        return null;\n      }\n\n      let readLength = Math.min(len, available);\n\n      new Uint8Array(chunkBuffer).set(\n        new Uint8Array(bufferView.buffer, off, readLength),\n        cstart\n      );\n      cursor += readLength;\n\n      return {\n        pos: index,\n        data: chunkBuffer,\n        offset: cstart,\n        length: readLength\n      };\n    })\n    .filter(Boolean);\n}\n\nclass File {\n  constructor(filename, ops, meta = null) {\n    this.filename = filename;\n    this.buffer = new Map();\n    this.ops = ops;\n    this.meta = meta;\n    this._metaDirty = false;\n    this.writeLock = false;\n    this.openHandles = 0;\n  }\n\n  bufferChunks(chunks) {\n    for (let i = 0; i < chunks.length; i++) {\n      let chunk = chunks[i];\n      this.buffer.set(chunk.pos, chunk);\n    }\n  }\n\n  open() {\n    this.openHandles++;\n\n    // Don't open the file again if it's already open\n    if (this.openHandles === 1) {\n      this.ops.open();\n      let meta = this.ops.readMeta();\n\n      // It's possible that `setattr` has already been called if opening\n      // the file in a mode that truncates it to 0\n      if (this.meta == null) {\n        if (meta == null) {\n          // New file\n\n          meta = { size: 0 };\n        }\n\n        this.meta = meta;\n      }\n    }\n\n    return this.meta;\n  }\n\n  close() {\n    this.fsync();\n\n    this.openHandles = Math.max(this.openHandles - 1, 0);\n\n    // Only close it if there are no existing open handles\n    if (this.openHandles === 0) {\n      this.ops.close();\n    }\n  }\n\n  delete() {\n    this.ops.delete();\n  }\n\n  load(indexes) {\n    let status = indexes.reduce(\n      (acc, b) => {\n        let inMemory = this.buffer.get(b);\n        if (inMemory) {\n          acc.chunks.push(inMemory);\n        } else {\n          acc.missing.push(b);\n        }\n        return acc;\n      },\n      { chunks: [], missing: [] }\n    );\n\n    let missingChunks = [];\n    if (status.missing.length > 0) {\n      missingChunks = this.ops.readBlocks(status.missing, this.meta.blockSize);\n    }\n    return status.chunks.concat(missingChunks);\n  }\n\n  read(bufferView, offset, length, position) {\n    // console.log('reading', this.filename, offset, length, position);\n    let buffer = bufferView.buffer;\n\n    if (length <= 0) {\n      return 0;\n    }\n    if (position < 0) {\n      // TODO: is this right?\n      return 0;\n    }\n    if (position >= this.meta.size) {\n      let view = new Uint8Array(buffer, offset);\n      for (let i = 0; i < length; i++) {\n        view[i] = 0;\n      }\n\n      return length;\n    }\n\n    position = Math.max(position, 0);\n    let dataLength = Math.min(length, this.meta.size - position);\n\n    let start = position;\n    let end = position + dataLength;\n\n    let indexes = getBoundaryIndexes(this.meta.blockSize, start, end);\n\n    let chunks = this.load(indexes);\n    let readBuffer = readChunks(chunks, start, end);\n\n    if (buffer.byteLength - offset < readBuffer.byteLength) {\n      throw new Error('Buffer given to `read` is too small');\n    }\n    let view = new Uint8Array(buffer);\n    view.set(new Uint8Array(readBuffer), offset);\n\n    // TODO: I don't need to do this. `unixRead` does this for us.\n    for (let i = dataLength; i < length; i++) {\n      view[offset + i] = 0;\n    }\n\n    return length;\n  }\n\n  write(bufferView, offset, length, position) {\n    // console.log('writing', this.filename, offset, length, position);\n\n    if (this.meta.blockSize == null) {\n      // We don't have a block size yet (an empty file). The first\n      // write MUST be the beginning of the file. This is a new file\n      // and the first block contains the page size which we need.\n      // sqlite will write this block first, and if you are directly\n      // writing a db file to disk you can't write random parts of it.\n      // Just write the whole thing and we'll get the first block\n      // first.\n\n      let pageSize = getPageSize(\n        new Uint8Array(bufferView.buffer, bufferView.byteOffset + offset)\n      );\n\n      // Page sizes must be a power of 2 between 512 and 65536.\n      // These was generated by doing `Math.pow(2, N)` where N >= 9\n      // and N <= 16.\n      if (\n        ![512, 1024, 2048, 4096, 8192, 16384, 32768, 65536].includes(pageSize)\n      ) {\n        throw new Error(\n          'File has invalid page size. (the first block of a new file must be written first)'\n        );\n      }\n\n      this.setattr({ blockSize: pageSize });\n    }\n\n    let buffer = bufferView.buffer;\n\n    if (length <= 0) {\n      return 0;\n    }\n    if (position < 0) {\n      return 0;\n    }\n    if (buffer.byteLength === 0) {\n      return 0;\n    }\n\n    length = Math.min(length, buffer.byteLength - offset);\n\n    let writes = writeChunks(\n      new Uint8Array(buffer, offset, length),\n      this.meta.blockSize,\n      position,\n      position + length\n    );\n\n    // Find any partial chunks and read them in and merge with\n    // existing data\n    let { partialWrites, fullWrites } = writes.reduce(\n      (state, write) => {\n        if (write.length !== this.meta.blockSize) {\n          state.partialWrites.push(write);\n        } else {\n          state.fullWrites.push({\n            pos: write.pos,\n            data: write.data\n          });\n        }\n        return state;\n      },\n      { fullWrites: [], partialWrites: [] }\n    );\n\n    let reads = [];\n    if (partialWrites.length > 0) {\n      reads = this.load(partialWrites.map(w => w.pos));\n    }\n\n    let allWrites = fullWrites.concat(\n      reads.map(read => {\n        let write = partialWrites.find(w => w.pos === read.pos);\n\n        // MuTatIoN!\n        new Uint8Array(read.data).set(\n          new Uint8Array(write.data, write.offset, write.length),\n          write.offset,\n          write.length\n        );\n\n        return read;\n      })\n    );\n\n    this.bufferChunks(allWrites);\n\n    if (position + length > this.meta.size) {\n      this.setattr({ size: position + length });\n    }\n\n    return length;\n  }\n\n  async readIfFallback() {\n    if (this.ops.readIfFallback) {\n      // Reset the meta\n      let meta = await this.ops.readIfFallback();\n      this.meta = meta || { size: 0 };\n    }\n  }\n\n  lock(lockType) {\n    // TODO: Perf APIs need improvement\n    if (!this._recordingLock) {\n      this._recordingLock = true;\n    }\n\n    if (this.ops.lock(lockType)) {\n      if (lockType >= LOCK_TYPES.RESERVED) {\n        this.writeLock = true;\n      }\n      return true;\n    }\n    return false;\n  }\n\n  unlock(lockType) {\n    if (lockType === 0) {\n      this._recordingLock = false;\n    }\n\n    if (this.writeLock) {\n      // In certain cases (I saw this while running VACUUM after\n      // changing page size) sqlite changes the size of the file\n      // _after_ `fsync` for some reason. In our case, this is\n      // critical because we are relying on fsync to write everything\n      // out. If we just did some writes, do another fsync which will\n      // check the meta and make sure it's persisted if dirty (all\n      // other writes should already be flushed by now)\n      this.fsync();\n      this.writeLock = false;\n    }\n\n    return this.ops.unlock(lockType);\n  }\n\n  fsync() {\n    if (this.buffer.size > 0) {\n      // We need to handle page size changes which restructures the\n      // whole db. We check if the page size is being written and\n      // handle it\n      let first = this.buffer.get(0);\n      if (first) {\n        let pageSize = getPageSize(new Uint8Array(first.data));\n\n        if (pageSize !== this.meta.blockSize) {\n          // The page size changed! We need to reflect that in our\n          // storage. We need to restructure all pending writes and\n          // change our page size so all future writes reflect the new\n          // size.\n          let buffer = this.buffer;\n          this.buffer = new Map();\n\n          // We take all pending writes, concat them into a single\n          // buffer, and rewrite it out with the new size. This would\n          // be dangerous if the page size could be changed at any\n          // point in time since we don't handle partial reads here.\n          // However sqlite only ever actually changes the page size\n          // in 2 cases:\n          //\n          // * The db is empty (no data yet, so nothing to read)\n          // * A VACUUM command is rewriting the entire db\n          //\n          // In both cases, we can assume we have _all_ the needed\n          // data in the pending buffer, and we don't have to worry\n          // about overwriting anything.\n\n          let writes = [...buffer.values()];\n          let totalSize = writes.length * this.meta.blockSize;\n          let buf = new ArrayBuffer(totalSize);\n          let view = new Uint8Array(buf);\n\n          for (let write of writes) {\n            view.set(new Uint8Array(write.data), write.pos);\n          }\n\n          // Rewrite the buffer with the new page size\n          this.bufferChunks(writeChunks(view, pageSize, 0, totalSize));\n\n          // Change our page size\n          this.setattr({ blockSize: pageSize });\n        }\n      }\n\n      this.ops.writeBlocks([...this.buffer.values()], this.meta.blockSize);\n    }\n\n    if (this._metaDirty) {\n      // We only store the size right now. Block size is already\n      // stored in the sqlite file and we don't need the rest\n      //\n      // TODO: Currently we don't delete any extra blocks after the\n      // end of the file. This isn't super important, and in fact\n      // could cause perf regressions (sqlite doesn't compress files\n      // either!) but what we probably should do is detect a VACUUM\n      // command (the whole db is being rewritten) and at that point\n      // delete anything after the end of the file\n      this.ops.writeMeta({ size: this.meta.size });\n      this._metaDirty = false;\n    }\n\n    this.buffer = new Map();\n  }\n\n  setattr(attr) {\n    if (this.meta == null) {\n      this.meta = {};\n    }\n\n    // Size is the only attribute we actually persist. The rest are\n    // stored in memory\n\n    if (attr.mode !== undefined) {\n      this.meta.mode = attr.mode;\n    }\n\n    if (attr.blockSize !== undefined) {\n      this.meta.blockSize = attr.blockSize;\n    }\n\n    if (attr.size !== undefined) {\n      this.meta.size = attr.size;\n      this._metaDirty = true;\n    }\n  }\n\n  getattr() {\n    return this.meta;\n  }\n}\n\nlet FINALIZED = 0xdeadbeef;\n\nlet WRITEABLE = 0;\nlet READABLE = 1;\n\nclass Reader {\n  constructor(\n    buffer,\n    { initialOffset = 4, useAtomics = true, stream = true, debug, name } = {}\n  ) {\n    this.buffer = buffer;\n    this.atomicView = new Int32Array(buffer);\n    this.offset = initialOffset;\n    this.useAtomics = useAtomics;\n    this.stream = stream;\n    this.debug = debug;\n    this.name = name;\n  }\n\n  log(...args) {\n    if (this.debug) {\n      console.log(`[reader: ${this.name}]`, ...args);\n    }\n  }\n\n  waitWrite(name, timeout = null) {\n    if (this.useAtomics) {\n      this.log(`waiting for ${name}`);\n\n      while (Atomics.load(this.atomicView, 0) === WRITEABLE) {\n        if (timeout != null) {\n          if (\n            Atomics.wait(this.atomicView, 0, WRITEABLE, timeout) === 'timed-out'\n          ) {\n            throw new Error('timeout');\n          }\n        }\n\n        Atomics.wait(this.atomicView, 0, WRITEABLE, 500);\n      }\n\n      this.log(`resumed for ${name}`);\n    } else {\n      if (this.atomicView[0] !== READABLE) {\n        throw new Error('`waitWrite` expected array to be readable');\n      }\n    }\n  }\n\n  flip() {\n    this.log('flip');\n    if (this.useAtomics) {\n      let prev = Atomics.compareExchange(\n        this.atomicView,\n        0,\n        READABLE,\n        WRITEABLE\n      );\n\n      if (prev !== READABLE) {\n        throw new Error('Read data out of sync! This is disastrous');\n      }\n\n      Atomics.notify(this.atomicView, 0);\n    } else {\n      this.atomicView[0] = WRITEABLE;\n    }\n\n    this.offset = 4;\n  }\n\n  done() {\n    this.waitWrite('done');\n\n    let dataView = new DataView(this.buffer, this.offset);\n    let done = dataView.getUint32(0) === FINALIZED;\n\n    if (done) {\n      this.log('done');\n      this.flip();\n    }\n\n    return done;\n  }\n\n  peek(fn) {\n    this.peekOffset = this.offset;\n    let res = fn();\n    this.offset = this.peekOffset;\n    this.peekOffset = null;\n    return res;\n  }\n\n  string(timeout) {\n    this.waitWrite('string', timeout);\n\n    let byteLength = this._int32();\n    let length = byteLength / 2;\n\n    let dataView = new DataView(this.buffer, this.offset, byteLength);\n    let chars = [];\n    for (let i = 0; i < length; i++) {\n      chars.push(dataView.getUint16(i * 2));\n    }\n    let str = String.fromCharCode.apply(null, chars);\n    this.log('string', str);\n\n    this.offset += byteLength;\n\n    if (this.peekOffset == null) {\n      this.flip();\n    }\n    return str;\n  }\n\n  _int32() {\n    let byteLength = 4;\n\n    let dataView = new DataView(this.buffer, this.offset);\n    let num = dataView.getInt32();\n    this.log('_int32', num);\n\n    this.offset += byteLength;\n    return num;\n  }\n\n  int32() {\n    this.waitWrite('int32');\n    let num = this._int32();\n    this.log('int32', num);\n\n    if (this.peekOffset == null) {\n      this.flip();\n    }\n    return num;\n  }\n\n  bytes() {\n    this.waitWrite('bytes');\n\n    let byteLength = this._int32();\n\n    let bytes = new ArrayBuffer(byteLength);\n    new Uint8Array(bytes).set(\n      new Uint8Array(this.buffer, this.offset, byteLength)\n    );\n    this.log('bytes', bytes);\n\n    this.offset += byteLength;\n\n    if (this.peekOffset == null) {\n      this.flip();\n    }\n    return bytes;\n  }\n}\n\nclass Writer {\n  constructor(\n    buffer,\n    { initialOffset = 4, useAtomics = true, stream = true, debug, name } = {}\n  ) {\n    this.buffer = buffer;\n    this.atomicView = new Int32Array(buffer);\n    this.offset = initialOffset;\n    this.useAtomics = useAtomics;\n    this.stream = stream;\n\n    this.debug = debug;\n    this.name = name;\n\n    if (this.useAtomics) {\n      // The buffer starts out as writeable\n      Atomics.store(this.atomicView, 0, WRITEABLE);\n    } else {\n      this.atomicView[0] = WRITEABLE;\n    }\n  }\n\n  log(...args) {\n    if (this.debug) {\n      console.log(`[writer: ${this.name}]`, ...args);\n    }\n  }\n\n  waitRead(name) {\n    if (this.useAtomics) {\n      this.log(`waiting for ${name}`);\n      // Switch to writable\n      // Atomics.store(this.atomicView, 0, 1);\n\n      let prev = Atomics.compareExchange(\n        this.atomicView,\n        0,\n        WRITEABLE,\n        READABLE\n      );\n\n      if (prev !== WRITEABLE) {\n        throw new Error(\n          'Wrote something into unwritable buffer! This is disastrous'\n        );\n      }\n\n      Atomics.notify(this.atomicView, 0);\n\n      while (Atomics.load(this.atomicView, 0) === READABLE) {\n        // console.log('waiting to be read...');\n        Atomics.wait(this.atomicView, 0, READABLE, 500);\n      }\n\n      this.log(`resumed for ${name}`);\n    } else {\n      this.atomicView[0] = READABLE;\n    }\n\n    this.offset = 4;\n  }\n\n  finalize() {\n    this.log('finalizing');\n    let dataView = new DataView(this.buffer, this.offset);\n    dataView.setUint32(0, FINALIZED);\n    this.waitRead('finalize');\n  }\n\n  string(str) {\n    this.log('string', str);\n\n    let byteLength = str.length * 2;\n    this._int32(byteLength);\n\n    let dataView = new DataView(this.buffer, this.offset, byteLength);\n    for (let i = 0; i < str.length; i++) {\n      dataView.setUint16(i * 2, str.charCodeAt(i));\n    }\n\n    this.offset += byteLength;\n    this.waitRead('string');\n  }\n\n  _int32(num) {\n    let byteLength = 4;\n\n    let dataView = new DataView(this.buffer, this.offset);\n    dataView.setInt32(0, num);\n\n    this.offset += byteLength;\n  }\n\n  int32(num) {\n    this.log('int32', num);\n    this._int32(num);\n    this.waitRead('int32');\n  }\n\n  bytes(buffer) {\n    this.log('bytes', buffer);\n\n    let byteLength = buffer.byteLength;\n    this._int32(byteLength);\n    new Uint8Array(this.buffer, this.offset).set(new Uint8Array(buffer));\n\n    this.offset += byteLength;\n    this.waitRead('bytes');\n  }\n}\n\nfunction positionToKey$1(pos, blockSize) {\n  // We are forced to round because of floating point error. `pos`\n  // should always be divisible by `blockSize`\n  return Math.round(pos / blockSize);\n}\n\nfunction startWorker(reader, writer) {\n  // In a normal world, we'd spawn the worker here as a child worker.\n  // However Safari doesn't support nested workers, so we have to\n  // proxy them through the main thread\n  self.postMessage({\n    type: '__absurd:spawn-idb-worker',\n    argBuffer: writer.buffer,\n    resultBuffer: reader.buffer\n  });\n\n  self.addEventListener('message', e => {\n    switch (e.data.type) {\n      // Normally you would use `postMessage` control the profiler in\n      // a worker (just like this worker go those events), and the\n      // perf library automatically handles those events. We don't do\n      // that for the special backend worker though because it's\n      // always blocked when it's not processing. Instead we forward\n      // these events by going through the atomics layer to unblock it\n      // to make sure it starts immediately\n      case '__perf-deets:start-profile':\n        writer.string('profile-start');\n        writer.finalize();\n        reader.int32();\n        reader.done();\n        break;\n\n      case '__perf-deets:stop-profile':\n        writer.string('profile-stop');\n        writer.finalize();\n        reader.int32();\n        reader.done();\n        break;\n    }\n  });\n}\n\nclass FileOps {\n  constructor(filename) {\n    this.filename = filename;\n  }\n\n  // TODO: This should be renamed to `getDatabaseName`\n  getStoreName() {\n    return this.filename.replace(/\\//g, '-');\n  }\n\n  invokeWorker(method, args) {\n    if (this.reader == null || this.writer == null) {\n      throw new Error(\n        `Attempted ${method} on ${this.filename} but file not open`\n      );\n    }\n\n    let reader = this.reader;\n    let writer = this.writer;\n\n    switch (method) {\n      case 'readBlocks': {\n        let { name, positions, blockSize } = args;\n\n        let res = [];\n        for (let pos of positions) {\n          writer.string('readBlock');\n          writer.string(name);\n          writer.int32(positionToKey$1(pos, blockSize));\n          writer.finalize();\n\n          let data = reader.bytes();\n          reader.done();\n          res.push({\n            pos,\n            // If th length is 0, the block didn't exist. We return a\n            // blank block in that case\n            data: data.byteLength === 0 ? new ArrayBuffer(blockSize) : data\n          });\n        }\n\n        return res;\n      }\n\n      case 'writeBlocks': {\n        let { name, writes, blockSize } = args;\n        writer.string('writeBlocks');\n        writer.string(name);\n        for (let write of writes) {\n          writer.int32(positionToKey$1(write.pos, blockSize));\n          writer.bytes(write.data);\n        }\n        writer.finalize();\n\n        let res = reader.int32();\n        reader.done();\n        return res;\n      }\n\n      case 'readMeta': {\n        writer.string('readMeta');\n        writer.string(args.name);\n        writer.finalize();\n\n        let size = reader.int32();\n        let blockSize = reader.int32();\n        reader.done();\n        return size === -1 ? null : { size, blockSize };\n      }\n\n      case 'writeMeta': {\n        let { name, meta } = args;\n        writer.string('writeMeta');\n        writer.string(name);\n        writer.int32(meta.size);\n        // writer.int32(meta.blockSize);\n        writer.finalize();\n\n        let res = reader.int32();\n        reader.done();\n        return res;\n      }\n\n      case 'closeFile': {\n        writer.string('closeFile');\n        writer.string(args.name);\n        writer.finalize();\n\n        let res = reader.int32();\n        reader.done();\n        return res;\n      }\n\n      case 'lockFile': {\n        writer.string('lockFile');\n        writer.string(args.name);\n        writer.int32(args.lockType);\n        writer.finalize();\n\n        let res = reader.int32();\n        reader.done();\n        return res === 0;\n      }\n\n      case 'unlockFile': {\n        writer.string('unlockFile');\n        writer.string(args.name);\n        writer.int32(args.lockType);\n        writer.finalize();\n\n        let res = reader.int32();\n        reader.done();\n        return res === 0;\n      }\n    }\n  }\n\n  lock(lockType) {\n    return this.invokeWorker('lockFile', {\n      name: this.getStoreName(),\n      lockType\n    });\n  }\n\n  unlock(lockType) {\n    return this.invokeWorker('unlockFile', {\n      name: this.getStoreName(),\n      lockType\n    });\n  }\n\n  delete() {\n    // Close the file if it's open\n    if (this.reader || this.writer) {\n      this.close();\n    }\n\n    // We delete it here because we can't do it in the worker; the\n    // worker is stopped when the file closes. If we didn't do that,\n    // workers would leak in the case of closing a file but not\n    // deleting it. We could potentially restart the worker here if\n    // needed, but for now just assume that the deletion is a success\n    let req = globalThis.indexedDB.deleteDatabase(this.getStoreName());\n    req.onerror = () => {\n      console.warn(`Deleting ${this.filename} database failed`);\n    };\n    req.onsuccess = () => {};\n  }\n\n  open() {\n    let argBuffer = new SharedArrayBuffer(4096 * 9);\n    this.writer = new Writer(argBuffer, {\n      name: 'args (backend)',\n      debug: false\n    });\n\n    let resultBuffer = new SharedArrayBuffer(4096 * 9);\n    this.reader = new Reader(resultBuffer, {\n      name: 'results',\n      debug: false\n    });\n\n    // TODO: We could pool workers and reuse them so opening files\n    // aren't so slow\n    startWorker(this.reader, this.writer);\n  }\n\n  close() {\n    this.invokeWorker('closeFile', { name: this.getStoreName() });\n    this.reader = null;\n    this.writer = null;\n    this.worker = null;\n  }\n\n  readMeta() {\n    return this.invokeWorker('readMeta', { name: this.getStoreName() });\n  }\n\n  writeMeta(meta) {\n    return this.invokeWorker('writeMeta', { name: this.getStoreName(), meta });\n  }\n\n  readBlocks(positions, blockSize) {\n    if (this.stats) {\n      this.stats.read += positions.length;\n    }\n\n    return this.invokeWorker('readBlocks', {\n      name: this.getStoreName(),\n      positions,\n      blockSize\n    });\n  }\n\n  writeBlocks(writes, blockSize) {\n    if (this.stats) {\n      this.stats.writes += writes.length;\n    }\n\n    return this.invokeWorker('writeBlocks', {\n      name: this.getStoreName(),\n      writes,\n      blockSize\n    });\n  }\n}\n\n/**\n * https://bugs.webkit.org/show_bug.cgi?id=226547\n * Safari has a horrible bug where IDB requests can hang while the browser is starting up.\n * The only solution is to keep nudging it until it's awake.\n * This probably creates garbage, but garbage is better than totally failing.\n */\nfunction idbReady() {\n    const isSafari = !navigator.userAgentData &&\n        /Safari\\//.test(navigator.userAgent) &&\n        !/Chrom(e|ium)\\//.test(navigator.userAgent);\n    // No point putting other browsers or older versions of Safari through this mess.\n    if (!isSafari || !indexedDB.databases)\n        return Promise.resolve();\n    let intervalId;\n    return new Promise((resolve) => {\n        const tryIdb = () => indexedDB.databases().finally(resolve);\n        intervalId = setInterval(tryIdb, 100);\n        tryIdb();\n    }).finally(() => clearInterval(intervalId));\n}\n\nfunction positionToKey(pos, blockSize) {\n  // We are forced to round because of floating point error. `pos`\n  // should always be divisible by `blockSize`\n  return Math.round(pos / blockSize);\n}\n\nasync function openDb(name) {\n  await idbReady();\n\n  return new Promise((resolve, reject) => {\n    let req = globalThis.indexedDB.open(name, 2);\n    req.onsuccess = event => {\n      let db = event.target.result;\n\n      db.onversionchange = () => {\n        console.log('closing because version changed');\n        db.close();\n      };\n      db.onclose = () => {};\n\n      resolve(db);\n    };\n    req.onupgradeneeded = event => {\n      let db = event.target.result;\n      if (!db.objectStoreNames.contains('data')) {\n        db.createObjectStore('data');\n      }\n    };\n    req.onblocked = e => console.log('blocked', e);\n    req.onerror = req.onabort = e => reject(e.target.error);\n  });\n}\n\n// Using a separate class makes it easier to follow the code, and\n// importantly it removes any reliance on internal state in\n// `FileOpsFallback`. That would be problematic since these method\n// happen async; the args to `write` must be closed over so they don't\n// change\nclass Persistance {\n  constructor(dbName, onFallbackFailure) {\n    this.dbName = dbName;\n    this._openDb = null;\n    this.hasAlertedFailure = false;\n    this.onFallbackFailure = onFallbackFailure;\n  }\n\n  async getDb() {\n    if (this._openDb) {\n      return this._openDb;\n    }\n\n    this._openDb = await openDb(this.dbName);\n    return this._openDb;\n  }\n\n  closeDb() {\n    if (this._openDb) {\n      this._openDb.close();\n      this._openDb = null;\n    }\n  }\n\n  // Both `readAll` and `write` rely on IndexedDB transactional\n  // semantics to work, otherwise we'd have to coordinate them. If\n  // there are pending writes, the `readonly` transaction in `readAll`\n  // will block until they are all flushed out. If `write` is called\n  // multiple times, `readwrite` transactions can only run one at a\n  // time so it will naturally apply the writes sequentially (and\n  // atomically)\n\n  async readAll() {\n    let db = await this.getDb(this.dbName);\n    let blocks = new Map();\n\n    let trans = db.transaction(['data'], 'readonly');\n    let store = trans.objectStore('data');\n\n    return new Promise((resolve, reject) => {\n      // Open a cursor and iterate through the entire file\n      let req = store.openCursor(IDBKeyRange.lowerBound(-1));\n      req.onerror = reject;\n      req.onsuccess = e => {\n        let cursor = e.target.result;\n        if (cursor) {\n          blocks.set(cursor.key, cursor.value);\n          cursor.continue();\n        } else {\n          resolve(blocks);\n        }\n      };\n    });\n  }\n\n  async write(writes, cachedFirstBlock, hasLocked) {\n    let db = await this.getDb(this.dbName);\n\n    // We need grab a readwrite lock on the db, and then read to check\n    // to make sure we can write to it\n    let trans = db.transaction(['data'], 'readwrite');\n    let store = trans.objectStore('data');\n\n    await new Promise((resolve, reject) => {\n      let req = store.get(0);\n      req.onsuccess = e => {\n        if (hasLocked) {\n          if (!isSafeToWrite(req.result, cachedFirstBlock)) {\n            if (this.onFallbackFailure && !this.hasAlertedFailure) {\n              this.hasAlertedFailure = true;\n              this.onFallbackFailure();\n            }\n            reject(new Error('Fallback mode unable to write file changes'));\n            return;\n          }\n        }\n\n        // Flush all the writes\n        for (let write of writes) {\n          store.put(write.value, write.key);\n        }\n\n        trans.onsuccess = () => resolve();\n        trans.onerror = () => reject();\n      };\n      req.onerror = reject;\n    });\n  }\n}\n\nclass FileOpsFallback {\n  constructor(filename, onFallbackFailure) {\n    this.filename = filename;\n    this.dbName = this.filename.replace(/\\//g, '-');\n    this.cachedFirstBlock = null;\n    this.writeQueue = null;\n    this.blocks = new Map();\n    this.lockType = 0;\n    this.transferBlockOwnership = false;\n\n    this.persistance = new Persistance(this.dbName, onFallbackFailure);\n  }\n\n  async readIfFallback() {\n    this.transferBlockOwnership = true;\n    this.blocks = await this.persistance.readAll();\n\n    return this.readMeta();\n  }\n\n  lock(lockType) {\n    // Locks always succeed here. Essentially we're only working\n    // locally (we can't see any writes from anybody else) and we just\n    // want to track the lock so we know when it downgrades from write\n    // to read\n    this.cachedFirstBlock = this.blocks.get(0);\n    this.lockType = lockType;\n    return true;\n  }\n\n  unlock(lockType) {\n    if (this.lockType > LOCK_TYPES.SHARED && lockType === LOCK_TYPES.SHARED) {\n      // Within a write lock, we delay all writes until the end of the\n      // lock. We probably don't have to do this since we already\n      // delay writes until an `fsync`, however this is an extra\n      // measure to make sure we are writing everything atomically\n      this.flush();\n    }\n    this.lockType = lockType;\n    return true;\n  }\n\n  delete() {\n    let req = globalThis.indexedDB.deleteDatabase(this.dbName);\n    req.onerror = () => {\n      console.warn(`Deleting ${this.filename} database failed`);\n    };\n    req.onsuccess = () => {};\n  }\n\n  open() {\n    this.writeQueue = [];\n    this.lockType = 0;\n  }\n\n  close() {\n    this.flush();\n\n    if (this.transferBlockOwnership) {\n      this.transferBlockOwnership = false;\n    } else {\n      this.blocks = new Map();\n    }\n\n    this.persistance.closeDb();\n  }\n\n  readMeta() {\n    let metaBlock = this.blocks.get(-1);\n    if (metaBlock) {\n      let block = this.blocks.get(0);\n\n      return {\n        size: metaBlock.size,\n        blockSize: getPageSize(new Uint8Array(block))\n      };\n    }\n    return null;\n  }\n\n  writeMeta(meta) {\n    this.blocks.set(-1, meta);\n    this.queueWrite(-1, meta);\n  }\n\n  readBlocks(positions, blockSize) {\n    let res = [];\n    for (let pos of positions) {\n      res.push({\n        pos,\n        data: this.blocks.get(positionToKey(pos, blockSize))\n      });\n    }\n    return res;\n  }\n\n  writeBlocks(writes, blockSize) {\n    for (let write of writes) {\n      let key = positionToKey(write.pos, blockSize);\n      this.blocks.set(key, write.data);\n      this.queueWrite(key, write.data);\n    }\n\n    // No write lock; flush them out immediately\n    if (this.lockType <= LOCK_TYPES.SHARED) {\n      this.flush();\n    }\n  }\n\n  queueWrite(key, value) {\n    this.writeQueue.push({ key, value });\n  }\n\n  flush() {\n    if (this.writeQueue.length > 0) {\n      this.persistance.write(\n        this.writeQueue,\n        this.cachedFirstBlock,\n        this.lockType > LOCK_TYPES.SHARED\n      );\n      this.writeQueue = [];\n    }\n    this.cachedFirstBlock = null;\n  }\n}\n\nclass IndexedDBBackend {\n  constructor(onFallbackFailure) {\n    this.onFallbackFailure = onFallbackFailure;\n  }\n\n  createFile(filename) {\n    let ops;\n    if (typeof SharedArrayBuffer !== 'undefined') {\n      // SharedArrayBuffer exists! We can run this fully\n      ops = new FileOps(filename);\n    } else {\n      // SharedArrayBuffer is not supported. Use the fallback methods\n      // which provide a somewhat working version, but doesn't\n      // support mutations across connections (tabs)\n      ops = new FileOpsFallback(filename, this.onFallbackFailure);\n    }\n\n    let file = new File(filename, ops);\n\n    // If we don't need perf data, there's no reason for us to hold a\n    // reference to the files. If we did we'd have to worry about\n    // memory leaks\n    if (true) {\n      if (this._files == null) {\n        this._files = new Set();\n      }\n      this._files.add(file);\n    }\n\n    return file;\n  }\n\n  // Instead of controlling the profiler from the main thread by\n  // posting a message to this worker, you can control it inside the\n  // worker manually with these methods\n  startProfile() {\n    for (let file of this._files) {\n      // If the writer doesn't exist, that means the file has been\n      // deleted\n      if (file.ops.writer) {\n        let writer = file.ops.writer;\n        let reader = file.ops.reader;\n        writer.string('profile-start');\n        writer.finalize();\n        reader.int32();\n        reader.done();\n      }\n    }\n  }\n\n  stopProfile() {\n    for (let file of this._files) {\n      if (file.ops.writer) {\n        let writer = file.ops.writer;\n        let reader = file.ops.reader;\n        writer.string('profile-stop');\n        writer.finalize();\n        reader.int32();\n        reader.done();\n      }\n    }\n  }\n}\n\n/* harmony default export */ const __WEBPACK_DEFAULT_EXPORT__ = (IndexedDBBackend);\n\n\n//# sourceURL=webpack://sqlite-indexeddb-benchmark/./node_modules/absurd-sql/dist/indexeddb-backend.js?\n}");

/***/ }),

/***/ "?180a":
/*!********************!*\
  !*** fs (ignored) ***!
  \********************/
/***/ (() => {

eval("{/* (ignored) */\n\n//# sourceURL=webpack://sqlite-indexeddb-benchmark/fs_(ignored)?\n}");

/***/ }),

/***/ "?2a46":
/*!**********************!*\
  !*** path (ignored) ***!
  \**********************/
/***/ (() => {

eval("{/* (ignored) */\n\n//# sourceURL=webpack://sqlite-indexeddb-benchmark/path_(ignored)?\n}");

/***/ }),

/***/ "?6b37":
/*!************************!*\
  !*** crypto (ignored) ***!
  \************************/
/***/ (() => {

eval("{/* (ignored) */\n\n//# sourceURL=webpack://sqlite-indexeddb-benchmark/crypto_(ignored)?\n}");

/***/ })

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