From 274eedbb34dfa0eeeefd30922f0a5c8b928ffc6d Mon Sep 17 00:00:00 2001
From: shannonwells <shannonwells@users.noreply.github.com>
Date: Tue, 29 Jun 2021 10:28:58 -0700
Subject: [PATCH] getting a build working and passing tests disable LZO
 completely due to overrun error

---
 esbuild-plugins.js                     |  74 +++++++++
 esbuild-serve.js                       |  20 +++
 esbuild.js                             |  32 ++++
 examples/server/README.md              |   8 +
 examples/server/app.js                 |  20 +++
 examples/server/package.json           |  10 ++
 examples/server/views/footer.ejs       |   2 +
 examples/server/views/header.ejs       |  10 ++
 examples/server/views/parquetFiles.ejs |  44 +++++
 lib/bloomFilterIO/bloomFilterReader.ts |  12 +-
 lib/codec/plain.js                     |   1 -
 lib/compression.js                     |  35 ++--
 package-lock.json                      | 213 ++++++++++++++++++++-----
 package.json                           |  20 ++-
 test/integration.js                    |   2 +-
 webpack.config.js                      |  26 ++-
 16 files changed, 442 insertions(+), 87 deletions(-)
 create mode 100644 esbuild-plugins.js
 create mode 100644 esbuild-serve.js
 create mode 100644 esbuild.js
 create mode 100644 examples/server/README.md
 create mode 100644 examples/server/app.js
 create mode 100644 examples/server/package.json
 create mode 100644 examples/server/views/footer.ejs
 create mode 100644 examples/server/views/header.ejs
 create mode 100644 examples/server/views/parquetFiles.ejs

diff --git a/esbuild-plugins.js b/esbuild-plugins.js
new file mode 100644
index 00000000..9ad62026
--- /dev/null
+++ b/esbuild-plugins.js
@@ -0,0 +1,74 @@
+/**
+ * this plugin resolves to a browser version of compression.js that
+ * does not include LZO or Brötli comprssion.
+ */
+const compressionBrowserPlugin = {
+    name: 'compressionBrowser',
+    setup(build) {
+        let path = require('path')
+        build.onResolve({filter: /^\.\/compression$/}, args => {
+            return {
+                path: path.resolve(__dirname, "lib","browser","compression.js")
+            }
+        })
+    }
+}
+
+// Lifted from https://esbuild.github.io/plugins/#webassembly-plugin
+const wasmPlugin = {
+    name: 'wasm',
+    setup(build) {
+        let path = require('path')
+        let fs = require('fs')
+
+        // Resolve ".wasm" files to a path with a namespace
+        build.onResolve({ filter: /\.wasm$/ }, args => {
+            // If this is the import inside the stub module, import the
+            // binary itself. Put the path in the "wasm-binary" namespace
+            // to tell our binary load callback to load the binary file.
+            if (args.namespace === 'wasm-stub') {
+                return {
+                    path: args.path,
+                    namespace: 'wasm-binary',
+                }
+            }
+
+            // Otherwise, generate the JavaScript stub module for this
+            // ".wasm" file. Put it in the "wasm-stub" namespace to tell
+            // our stub load callback to fill it with JavaScript.
+            //
+            // Resolve relative paths to absolute paths here since this
+            // resolve callback is given "resolveDir", the directory to
+            // resolve imports against.
+            if (args.resolveDir === '') {
+                return // Ignore unresolvable paths
+            }
+            return {
+                path: path.isAbsolute(args.path) ? args.path : path.join(args.resolveDir, args.path),
+                namespace: 'wasm-stub',
+            }
+        })
+
+        // Virtual modules in the "wasm-stub" namespace are filled with
+        // the JavaScript code for compiling the WebAssembly binary. The
+        // binary itself is imported from a second virtual module.
+        build.onLoad({ filter: /.*/, namespace: 'wasm-stub' }, async (args) => ({
+            contents: `import wasm from ${JSON.stringify(args.path)}
+        export default (imports) =>
+          WebAssembly.instantiate(wasm, imports).then(
+            result => result.instance.exports)`,
+        }))
+
+        // Virtual modules in the "wasm-binary" namespace contain the
+        // actual bytes of the WebAssembly file. This uses esbuild's
+        // built-in "binary" loader instead of manually embedding the
+        // binary data inside JavaScript code ourselves.
+        build.onLoad({ filter: /.*/, namespace: 'wasm-binary' }, async (args) => ({
+            contents: await fs.promises.readFile(args.path),
+            loader: 'binary',
+        }))
+    },
+}
+
+module.exports = { compressionBrowserPlugin, wasmPlugin}
+
diff --git a/esbuild-serve.js b/esbuild-serve.js
new file mode 100644
index 00000000..5380bffe
--- /dev/null
+++ b/esbuild-serve.js
@@ -0,0 +1,20 @@
+import { compressionBrowserPlugin, wasmPlugin} from "./esbuild-plugins";
+// esbuild has TypeScript support by default
+require('esbuild')
+      .serve({
+        servedir: __dirname,
+      }, {
+        entryPoints: ['parquet.js'],
+        outfile: 'main.js',
+        define: {"process.env.NODE_DEBUG": false, "process.env.NODE_ENV": "\"production\"", global: "window" },
+        platform: 'browser',
+        plugins: [compressionBrowserPlugin,wasmPlugin],
+        sourcemap: "external",
+        bundle: true,
+        globalName: 'parquetjs',
+        inject: ['./esbuild-shims.js']
+      }).then(server => {
+          console.log("serving parquetjs", server)
+        // Call "stop" on the web server when you're done
+        // server.stop()
+      })
diff --git a/esbuild.js b/esbuild.js
new file mode 100644
index 00000000..e38398ab
--- /dev/null
+++ b/esbuild.js
@@ -0,0 +1,32 @@
+const path = require("path")
+const {compressionBrowserPlugin, wasmPlugin} = require("./esbuild-plugins");
+// esbuild has TypeScript support by default
+const outfile = 'parquet-bundle.min.js'
+require('esbuild')
+    .build({
+        bundle: true,
+        entryPoints: ['parquet.js'],
+        outdir: path.resolve(__dirname, "dist","browser"),
+        define: {
+            "process.env.NODE_DEBUG": false,
+            "process.env.NODE_ENV": "\"production\"",
+            global: "window"
+        },
+        globalName: 'parquetjs',
+        inject: ['./esbuild-shims.js'],
+        minify: true,
+        platform: 'browser',  // default
+        plugins: [compressionBrowserPlugin, wasmPlugin],
+        target: "esnext"  // default
+    })
+    .then(res => {
+        if (!res.warnings.length) {
+            console.log("built with no errors or warnings")
+        }
+    })
+    .catch(e => {
+        console.error("Finished with errors: ", e.toString());
+    });
+
+
+
diff --git a/examples/server/README.md b/examples/server/README.md
new file mode 100644
index 00000000..995d471c
--- /dev/null
+++ b/examples/server/README.md
@@ -0,0 +1,8 @@
+# Example Server
+This is a toy server that illustrates how to use the parquetjs library built with esbuild.
+To run it: 
+1. npm install
+1. View and edit the files in `views` to taste   
+1. node app.js
+1. Build and serve the parquetjs bundle    
+1. visit `http://localhost:3000` and click buttons, do things in the console.
diff --git a/examples/server/app.js b/examples/server/app.js
new file mode 100644
index 00000000..e65a329e
--- /dev/null
+++ b/examples/server/app.js
@@ -0,0 +1,20 @@
+const express = require('express')
+const path = require("path")
+const app = express()
+const port = 3000
+
+app.use(express.static(path.join(__dirname, 'public')));
+app.engine('ejs', require('ejs').__express);
+
+app.set('view engine', 'ejs');
+
+app.get('/', (req, res) => {
+    res.render('parquetFiles', {
+        // files: "fruits, fruits-no-index".split(','),
+        title: "Parquet Files",
+    })
+})
+
+app.listen(port, () => {
+    console.log(`Example app listening at http://localhost:${port}`)
+})
diff --git a/examples/server/package.json b/examples/server/package.json
new file mode 100644
index 00000000..82401dc8
--- /dev/null
+++ b/examples/server/package.json
@@ -0,0 +1,10 @@
+{
+  "name": "untitled",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "@dsnp/parquetjs": "../parquetjs",
+    "ejs": "^3.1.6"
+  }
+}
diff --git a/examples/server/views/footer.ejs b/examples/server/views/footer.ejs
new file mode 100644
index 00000000..308b1d01
--- /dev/null
+++ b/examples/server/views/footer.ejs
@@ -0,0 +1,2 @@
+</body>
+</html>
diff --git a/examples/server/views/header.ejs b/examples/server/views/header.ejs
new file mode 100644
index 00000000..3ba3dd90
--- /dev/null
+++ b/examples/server/views/header.ejs
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width,initial-scale=1">
+    <title><%= title %></title>
+    <script src="http://localhost:8000/main.js"></script>
+    <link rel="icon" href="data:,">
+</head>
+<body>
diff --git a/examples/server/views/parquetFiles.ejs b/examples/server/views/parquetFiles.ejs
new file mode 100644
index 00000000..76ae9751
--- /dev/null
+++ b/examples/server/views/parquetFiles.ejs
@@ -0,0 +1,44 @@
+
+<%- include("./header.ejs", {title: "Parquet files" }) %>
+<script>
+    const readit = function(filename) {
+            parquetjs.ParquetReader
+                .openUrl(`http://localhost:3000/files/${filename}`)
+                .then(async (reader) => {
+                    let cursor = await reader.getCursor();
+
+                    let record = null;
+                    while (record = await cursor.next()) {
+                        console.log("record", record);
+                    }
+                    return reader;
+                })
+                .then((reader) => reader.close())
+                .catch((e) => {
+                    console.log("error", e);
+                })
+
+        }
+
+    const search = async function(filename, columnName, searchTerm ) {
+        const rdr = await parquetjs.ParquetReader.openUrl(`http://localhost:3000/files/${filename}`)
+        const bfs = await rdr.getBloomFiltersFor([columnName])
+        if (!bfs[columnName]) return false
+        const all = Promise.all(bfs[columnName].map( async item => item.sbbf.check(searchTerm)))
+                    .then( values => values.some((el) => (el === true)))
+        rdr.close()
+        return all
+   }
+</script>
+
+<ul>
+<li><button onclick="readit('fruits-no-index.parquet')" >No index</button></li>
+<li><button onclick="readit('fruits-statistics.parquet')" >with statistics</button></li>
+<li><button onclick="readit('fruits-bloomfilter.parquet')" >with Bloom filter</button></li>
+<li><button onclick="readit('alltypes_dictionary.parquet')" >all types w/ dictionary</button></li>
+<li><button onclick="readit('fruits.parquet')" >With (unsupported) Brötli compression</button></li>
+</ul>
+<h3>Search fruits-bloomfilter.parquet "name" column for</h3>
+<button onclick="search('fruits-bloomfilter.parquet', 'name', 'kiwi')">Search fruits-bloomfilter.parquet for "kiwi"</button>
+
+<%- include("./footer.ejs") %>
diff --git a/lib/bloomFilterIO/bloomFilterReader.ts b/lib/bloomFilterIO/bloomFilterReader.ts
index 76cb269d..ecd9509c 100644
--- a/lib/bloomFilterIO/bloomFilterReader.ts
+++ b/lib/bloomFilterIO/bloomFilterReader.ts
@@ -8,14 +8,10 @@ const filterColumnChunksWithBloomFilters = (
   columnChunkDataCollection: Array<ColumnChunkData>
 ) => {
   return columnChunkDataCollection.filter((columnChunk) => {
-    const {
-      column: {
-        meta_data: {
-          bloom_filter_offset: { buffer: bloomFilterOffsetBuffer },
-        },
-      },
-    } = columnChunk;
-    return bloomFilterOffsetBuffer;
+    if (!columnChunk.column.meta_data.bloom_filter_offset) {
+      return null
+    }
+    return columnChunk?.column?.meta_data?.bloom_filter_offset?.buffer
   });
 };
 
diff --git a/lib/codec/plain.js b/lib/codec/plain.js
index 068e5c0b..57afe069 100644
--- a/lib/codec/plain.js
+++ b/lib/codec/plain.js
@@ -49,7 +49,6 @@ function decodeValues_INT32(cursor, count) {
 function encodeValues_INT64(values) {
   let buf = Buffer.alloc(8 * values.length);
   for (let i = 0; i < values.length; i++) {
-    //console.log(typeof values[i]);
     buf.writeBigInt64LE(BigInt(values[i]), i*8);
   }
 
diff --git a/lib/compression.js b/lib/compression.js
index 67884b9f..805b06f2 100644
--- a/lib/compression.js
+++ b/lib/compression.js
@@ -2,7 +2,8 @@
 const zlib = require('zlib');
 const snappy = require('snappyjs');
 // const lzo = require('lzo');
-import wasmBrotli from 'wasm-brotli'
+import { compress as brotliCompress, decompress as brotliDecompress } from 'wasm-brotli'
+
 
 const PARQUET_COMPRESSION_METHODS = {
   'UNCOMPRESSED': {
@@ -17,10 +18,11 @@ const PARQUET_COMPRESSION_METHODS = {
     deflate: deflate_snappy,
     inflate: inflate_snappy
   },
-  'LZO': {
-    deflate: deflate_lzo,
-    inflate: inflate_lzo
-  },
+  // Disabled. See: https://github.com/LibertyDSNP/parquetjs/issues/18
+  // 'LZO': {
+  //   deflate: deflate_lzo,
+  //   inflate: inflate_lzo
+  // },
   'BROTLI': {
     deflate: deflate_brotli,
     inflate: inflate_brotli
@@ -49,14 +51,13 @@ function deflate_gzip(value) {
 function deflate_snappy(value) {
   return snappy.compress(value);
 }
-
-function deflate_lzo(value) {
-  return lzo.compress(value);
-}
+//
+// function deflate_lzo(value) {
+//   return lzo.compress(value);
+// }
 
 async function deflate_brotli(value) {
-  const { compress } = await wasmBrotli
-  const compressedContent =  compress(value, {
+  const compressedContent =  await brotliCompress(value, {
     mode: 0,
     quality: 8,
     lgwin: 22
@@ -86,15 +87,15 @@ function inflate_gzip(value) {
 function inflate_snappy(value) {
   return snappy.uncompress(value);
 }
-
-function inflate_lzo(value) {
-  return lzo.decompress(value);
-}
+//
+// function inflate_lzo(value) {
+//   return lzo.decompress(value);
+// }
 
 async function inflate_brotli(value) {
-  const { uncompress } = await wasmBrotli
-  const uncompressedContent = uncompress(value)
+  const uncompressedContent = await brotliDecompress(value)
   return Buffer.from(uncompressedContent);
 }
 
 module.exports = { PARQUET_COMPRESSION_METHODS, deflate, inflate };
+
diff --git a/package-lock.json b/package-lock.json
index 71b39b95..0955dbcb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,6 +17,7 @@
         "browserify-zlib": "^0.2.0",
         "bson": "4.4.0",
         "cross-fetch": "^3.1.4",
+        "esbuild": "^0.12.11",
         "events": "^3.3.0",
         "int53": "^0.2.4",
         "lodash": "^4.17.21",
@@ -56,9 +57,9 @@
         "ts-loader": "^9.2.3",
         "ts-node": "^9.1.1",
         "typescript": "^4.3.4",
-        "webpack": "^5.41.0",
         "webpack-cli": "^4.7.2",
-        "webpack-dev-server": "^3.11.2"
+        "webpack-dev-server": "^3.11.2",
+        "xxhashjs": "^0.2.2"
       },
       "engines": {
         "node": ">=14.16.0"
@@ -1762,6 +1763,7 @@
       "resolved": "https://registry.npmjs.org/@types/eslint/-/eslint-7.2.13.tgz",
       "integrity": "sha512-LKmQCWAlnVHvvXq4oasNUMTJJb2GwSyTY8+1C7OH5ILR8mPLaljv1jxL1bXW3xB3jFbQxTKxJAvI8PyjB09aBg==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@types/estree": "*",
         "@types/json-schema": "*"
@@ -1772,6 +1774,7 @@
       "resolved": "https://registry.npmjs.org/@types/eslint-scope/-/eslint-scope-3.7.0.tgz",
       "integrity": "sha512-O/ql2+rrCUe2W2rs7wMR+GqPRcgB6UiqN5RhrR5xruFlY7l9YLMn0ZkDzjoHLeiFkR8MCQZVudUuuvQ2BLC9Qw==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@types/eslint": "*",
         "@types/estree": "*"
@@ -1781,7 +1784,8 @@
       "version": "0.0.48",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.48.tgz",
       "integrity": "sha512-LfZwXoGUDo0C3me81HXgkBg5CTQYb6xzEl+fNmbO4JdRiSKQ8A0GD1OBBvKAIsbCUgoyAty7m99GqqMQe784ew==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "node_modules/@types/glob": {
       "version": "7.1.3",
@@ -1904,6 +1908,7 @@
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.11.0.tgz",
       "integrity": "sha512-kX2W49LWsbthrmIRMbQZuQDhGtjyqXfEmmHyEi4XWnSZtPmxY0+3anPIzsnRb45VH/J55zlOfWvZuY47aJZTJg==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@webassemblyjs/helper-numbers": "1.11.0",
         "@webassemblyjs/helper-wasm-bytecode": "1.11.0"
@@ -1913,25 +1918,29 @@
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/floating-point-hex-parser/-/floating-point-hex-parser-1.11.0.tgz",
       "integrity": "sha512-Q/aVYs/VnPDVYvsCBL/gSgwmfjeCb4LW8+TMrO3cSzJImgv8lxxEPM2JA5jMrivE7LSz3V+PFqtMbls3m1exDA==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "node_modules/@webassemblyjs/helper-api-error": {
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-api-error/-/helper-api-error-1.11.0.tgz",
       "integrity": "sha512-baT/va95eXiXb2QflSx95QGT5ClzWpGaa8L7JnJbgzoYeaA27FCvuBXU758l+KXWRndEmUXjP0Q5fibhavIn8w==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "node_modules/@webassemblyjs/helper-buffer": {
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-buffer/-/helper-buffer-1.11.0.tgz",
       "integrity": "sha512-u9HPBEl4DS+vA8qLQdEQ6N/eJQ7gT7aNvMIo8AAWvAl/xMrcOSiI2M0MAnMCy3jIFke7bEee/JwdX1nUpCtdyA==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "node_modules/@webassemblyjs/helper-numbers": {
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-numbers/-/helper-numbers-1.11.0.tgz",
       "integrity": "sha512-DhRQKelIj01s5IgdsOJMKLppI+4zpmcMQ3XboFPLwCpSNH6Hqo1ritgHgD0nqHeSYqofA6aBN/NmXuGjM1jEfQ==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@webassemblyjs/floating-point-hex-parser": "1.11.0",
         "@webassemblyjs/helper-api-error": "1.11.0",
@@ -1942,13 +1951,15 @@
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-wasm-bytecode/-/helper-wasm-bytecode-1.11.0.tgz",
       "integrity": "sha512-MbmhvxXExm542tWREgSFnOVo07fDpsBJg3sIl6fSp9xuu75eGz5lz31q7wTLffwL3Za7XNRCMZy210+tnsUSEA==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "node_modules/@webassemblyjs/helper-wasm-section": {
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-wasm-section/-/helper-wasm-section-1.11.0.tgz",
       "integrity": "sha512-3Eb88hcbfY/FCukrg6i3EH8H2UsD7x8Vy47iVJrP967A9JGqgBVL9aH71SETPx1JrGsOUVLo0c7vMCN22ytJew==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@webassemblyjs/ast": "1.11.0",
         "@webassemblyjs/helper-buffer": "1.11.0",
@@ -1961,6 +1972,7 @@
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ieee754/-/ieee754-1.11.0.tgz",
       "integrity": "sha512-KXzOqpcYQwAfeQ6WbF6HXo+0udBNmw0iXDmEK5sFlmQdmND+tr773Ti8/5T/M6Tl/413ArSJErATd8In3B+WBA==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@xtuc/ieee754": "^1.2.0"
       }
@@ -1970,6 +1982,7 @@
       "resolved": "https://registry.npmjs.org/@webassemblyjs/leb128/-/leb128-1.11.0.tgz",
       "integrity": "sha512-aqbsHa1mSQAbeeNcl38un6qVY++hh8OpCOzxhixSYgbRfNWcxJNJQwe2rezK9XEcssJbbWIkblaJRwGMS9zp+g==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@xtuc/long": "4.2.2"
       }
@@ -1978,13 +1991,15 @@
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/utf8/-/utf8-1.11.0.tgz",
       "integrity": "sha512-A/lclGxH6SpSLSyFowMzO/+aDEPU4hvEiooCMXQPcQFPPJaYcPQNKGOCLUySJsYJ4trbpr+Fs08n4jelkVTGVw==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "node_modules/@webassemblyjs/wasm-edit": {
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-edit/-/wasm-edit-1.11.0.tgz",
       "integrity": "sha512-JHQ0damXy0G6J9ucyKVXO2j08JVJ2ntkdJlq1UTiUrIgfGMmA7Ik5VdC/L8hBK46kVJgujkBIoMtT8yVr+yVOQ==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@webassemblyjs/ast": "1.11.0",
         "@webassemblyjs/helper-buffer": "1.11.0",
@@ -2001,6 +2016,7 @@
       "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-gen/-/wasm-gen-1.11.0.tgz",
       "integrity": "sha512-BEUv1aj0WptCZ9kIS30th5ILASUnAPEvE3tVMTrItnZRT9tXCLW2LEXT8ezLw59rqPP9klh9LPmpU+WmRQmCPQ==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "@webassemblyjs/ast": "1.11.0",
         "@webassemblyjs/helper-wasm-bytecode": "1.11.0",
@@ -2014,6 +2030,7 @@
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       "dev": true,
+      "peer": true,
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@@ -13902,6 +13983,7 @@
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+      "peer": true,
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       }
@@ -13910,13 +13992,15 @@
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-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "@webassemblyjs/wasm-edit": {
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       "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-edit/-/wasm-edit-1.11.0.tgz",
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       "dev": true,
+      "peer": true,
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@@ -13933,6 +14017,7 @@
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+      "peer": true,
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@@ -13946,6 +14031,7 @@
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       "dev": true,
+      "peer": true,
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@@ -13958,6 +14044,7 @@
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       "dev": true,
+      "peer": true,
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         "@webassemblyjs/helper-api-error": "1.11.0",
@@ -13972,6 +14059,7 @@
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       "dev": true,
+      "peer": true,
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         "@xtuc/long": "4.2.2"
@@ -14015,13 +14103,15 @@
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       "resolved": "https://registry.npmjs.org/@xtuc/ieee754/-/ieee754-1.2.0.tgz",
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-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "@xtuc/long": {
       "version": "4.2.2",
       "resolved": "https://registry.npmjs.org/@xtuc/long/-/long-4.2.2.tgz",
       "integrity": "sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "abab": {
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@@ -14043,7 +14133,8 @@
       "version": "8.4.0",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.4.0.tgz",
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-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "ajv": {
       "version": "6.12.6",
@@ -14686,7 +14777,8 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/chrome-trace-event/-/chrome-trace-event-1.0.3.tgz",
       "integrity": "sha512-p3KULyQg4S7NIHixdwbGX+nFHkoBiA4YQmyWtjb8XngSKV124nJmRysgAeujbUVb15vh+RvFUfCPqU7rXk+hZg==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "class-utils": {
       "version": "0.3.6",
@@ -14928,7 +15020,8 @@
       "version": "2.20.3",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
       "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "commondir": {
       "version": "1.0.1",
@@ -15123,6 +15216,12 @@
         "which": "^2.0.1"
       }
     },
+    "cuint": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/cuint/-/cuint-0.2.2.tgz",
+      "integrity": "sha1-QICG1AlVDCYxFVYZ6fp7ytw7mRs=",
+      "dev": true
+    },
     "dargs": {
       "version": "6.1.0",
       "resolved": "https://registry.npmjs.org/dargs/-/dargs-6.1.0.tgz",
@@ -15563,7 +15662,8 @@
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/es-module-lexer/-/es-module-lexer-0.6.0.tgz",
       "integrity": "sha512-f8kcHX1ArhllUtb/wVSyvygoKCznIjnxhLxy7TCvIiMdT7fL4ZDTIKaadMe6eLvOXg6Wk02UeoFgUoZ2EKZZUA==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "es-to-primitive": {
       "version": "1.2.1",
@@ -15580,6 +15680,11 @@
       "resolved": "https://registry.npmjs.org/es6-object-assign/-/es6-object-assign-1.1.0.tgz",
       "integrity": "sha1-wsNYJlYkfDnqEHyx5mUrb58kUjw="
     },
+    "esbuild": {
+      "version": "0.12.11",
+      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.12.11.tgz",
+      "integrity": "sha512-h83GwI6lYOrnSv5hSY2i2XZ191v3haj2IGDzwrkfWHhuO/kVMX3RYjhwRNG9E5VSxVLPaUjTVwrv8HWLvhk2nQ=="
+    },
     "escalade": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
@@ -15603,6 +15708,7 @@
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       "integrity": "sha512-2NxwbF/hZ0KpepYN0cNbo+FN6XoK7GaHlQhgx/hIZl6Va0bF45RQOOwhLIy8lQDbuCiadSLCBnH2CFYquit5bw==",
       "dev": true,
+      "peer": true,
       "requires": {
         "esrecurse": "^4.3.0",
         "estraverse": "^4.1.1"
@@ -15613,6 +15719,7 @@
       "resolved": "https://registry.npmjs.org/esrecurse/-/esrecurse-4.3.0.tgz",
       "integrity": "sha512-KmfKL3b6G+RXvP8N1vr3Tq1kL/oCFgn2NYXEtqP8/L3pKapUA4G8cFVaoF3SU323CD4XypR/ffioHmkti6/Tag==",
       "dev": true,
+      "peer": true,
       "requires": {
         "estraverse": "^5.2.0"
       },
@@ -15621,7 +15728,8 @@
           "version": "5.2.0",
           "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-5.2.0.tgz",
           "integrity": "sha512-BxbNGGNm0RyRYvUdHpIwv9IWzeM9XClbOxwoATuFdOE7ZE6wHL+HQ5T8hoPM+zHvmKzzsEqhgy0GrQ5X13afiQ==",
-          "dev": true
+          "dev": true,
+          "peer": true
         }
       }
     },
@@ -15629,7 +15737,8 @@
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-4.3.0.tgz",
       "integrity": "sha512-39nnKffWz8xN1BU/2c79n9nB9HDzo0niYUqx6xyqUnyoAnQyyWpOTdZEeiCch8BBu515t4wp9ZmgVfVhn9EBpw==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "esutils": {
       "version": "2.0.3",
@@ -16410,7 +16519,8 @@
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/glob-to-regexp/-/glob-to-regexp-0.4.1.tgz",
       "integrity": "sha512-lkX1HJXwyMcprw/5YUZc2s7DrpAiHB21/V+E1rHUrVNokkvB6bqMzT0VfV6/86ZNabt1k14YOIaT7nDvOX3Iiw==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "globals": {
       "version": "11.12.0",
@@ -17337,6 +17447,7 @@
       "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-27.0.2.tgz",
       "integrity": "sha512-EoBdilOTTyOgmHXtw/cPc+ZrCA0KJMrkXzkrPGNwLmnvvlN1nj7MPrxpT7m+otSv2e1TLaVffzDnE/LB14zJMg==",
       "dev": true,
+      "peer": true,
       "requires": {
         "@types/node": "*",
         "merge-stream": "^2.0.0",
@@ -17347,13 +17458,15 @@
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
           "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
-          "dev": true
+          "dev": true,
+          "peer": true
         },
         "supports-color": {
           "version": "8.1.1",
           "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-8.1.1.tgz",
           "integrity": "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q==",
           "dev": true,
+          "peer": true,
           "requires": {
             "has-flag": "^4.0.0"
           }
@@ -17391,7 +17504,8 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz",
       "integrity": "sha512-mrqyZKfX5EhL7hvqcV6WG1yYjnjeuYDzDhhcAAUrq8Po85NBQBJP+ZDUT75qZQ98IkUoBqdkExkukOU7Ts2wrw==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "json-parse-even-better-errors": {
       "version": "2.3.1",
@@ -17473,7 +17587,8 @@
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/loader-runner/-/loader-runner-4.2.0.tgz",
       "integrity": "sha512-92+huvxMvYlMzMt0iIOukcwYBFpkYJdpl2xsZ7LrlayO7E8SOv+JJUEK17B/dJIHAOLMfh2dZZ/Y18WgmGtYNw==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "loader-utils": {
       "version": "1.4.0",
@@ -18149,7 +18264,8 @@
       "version": "2.6.2",
       "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
       "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "nice-try": {
       "version": "1.0.5",
@@ -19243,6 +19359,7 @@
       "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.0.0.tgz",
       "integrity": "sha512-6D82/xSzO094ajanoOSbe4YvXWMfn2A//8Y1+MUqFAJul5Bs+yn36xbK9OtNDcRVSBJ9jjeoXftM6CfztsjOAA==",
       "dev": true,
+      "peer": true,
       "requires": {
         "@types/json-schema": "^7.0.6",
         "ajv": "^6.12.5",
@@ -19778,7 +19895,8 @@
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/source-list-map/-/source-list-map-2.0.1.tgz",
       "integrity": "sha512-qnQ7gVMxGNxsiL4lEuJwe/To8UnK7fAnmbGEEH8RpLouuKbeEm0lhbQVFIrNSuB+G7tVrAlVsZgETT5nljf+Iw==",
-      "dev": true
+      "dev": true,
+      "peer": true
     },
     "source-map": {
       "version": "0.5.7",
@@ -20140,6 +20258,7 @@
       "resolved": "https://registry.npmjs.org/terser/-/terser-5.7.0.tgz",
       "integrity": "sha512-HP5/9hp2UaZt5fYkuhNBR8YyRcT8juw8+uFbAme53iN9hblvKnLUTKkmwJG6ocWpIKf8UK4DoeWG4ty0J6S6/g==",
       "dev": true,
+      "peer": true,
       "requires": {
         "commander": "^2.20.0",
         "source-map": "~0.7.2",
@@ -20150,7 +20269,8 @@
           "version": "0.7.3",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.3.tgz",
           "integrity": "sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==",
-          "dev": true
+          "dev": true,
+          "peer": true
         }
       }
     },
@@ -20159,6 +20279,7 @@
       "resolved": "https://registry.npmjs.org/terser-webpack-plugin/-/terser-webpack-plugin-5.1.3.tgz",
       "integrity": "sha512-cxGbMqr6+A2hrIB5ehFIF+F/iST5ZOxvOmy9zih9ySbP1C2oEWQSOUS+2SNBTjzx5xLKO4xnod9eywdfq1Nb9A==",
       "dev": true,
+      "peer": true,
       "requires": {
         "jest-worker": "^27.0.2",
         "p-limit": "^3.1.0",
@@ -20172,7 +20293,8 @@
           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
           "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-          "dev": true
+          "dev": true,
+          "peer": true
         }
       }
     },
@@ -20715,6 +20837,7 @@
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.2.0.tgz",
       "integrity": "sha512-up4YAn/XHgZHIxFBVCdlMiWDj6WaLKpwVeGQk2I5thdYxF/KmF0aaz6TfJZ/hfl1h/XlcDr7k1KH7ThDagpFaA==",
       "dev": true,
+      "peer": true,
       "requires": {
         "glob-to-regexp": "^0.4.1",
         "graceful-fs": "^4.1.2"
@@ -20743,6 +20866,7 @@
       "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.41.0.tgz",
       "integrity": "sha512-pCVO7hVm8XiL6DpPtXrFLS8ktmH/tpvtbEex6hn4RweTFe6z6Cugh5FlQoEPZotb15HiirjM2Kv7THTA7sKLzQ==",
       "dev": true,
+      "peer": true,
       "requires": {
         "@types/eslint-scope": "^3.7.0",
         "@types/estree": "^0.0.48",
@@ -21412,6 +21536,7 @@
       "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-2.3.0.tgz",
       "integrity": "sha512-WyOdtwSvOML1kbgtXbTDnEW0jkJ7hZr/bDByIwszhWd/4XX1A3XMkrbFMsuH4+/MfLlZCUzlAdg4r7jaGKEIgQ==",
       "dev": true,
+      "peer": true,
       "requires": {
         "source-list-map": "^2.0.1",
         "source-map": "^0.6.1"
@@ -21421,7 +21546,8 @@
           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
           "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-          "dev": true
+          "dev": true,
+          "peer": true
         }
       }
     },
@@ -21618,6 +21744,15 @@
       "resolved": "https://registry.npmjs.org/xxhash-wasm/-/xxhash-wasm-0.4.1.tgz",
       "integrity": "sha512-sAaACjH5Th5O2Y1Pl6Mm03bHdie8htTm7ZG146by2ITXuxD1Ksx46ZEOYaDhtlCY3fHrmDfdvzTOGzO1R00COA=="
     },
+    "xxhashjs": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/xxhashjs/-/xxhashjs-0.2.2.tgz",
+      "integrity": "sha512-AkTuIuVTET12tpsVIQo+ZU6f/qDmKuRUcjaqR+OIvm+aCBsZ95i7UVY5WJ9TMsSaZ0DA2WxoZ4acu0sPH+OKAw==",
+      "dev": true,
+      "requires": {
+        "cuint": "^0.2.2"
+      }
+    },
     "y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/package.json b/package.json
index b480624b..7607af21 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "browserify-zlib": "^0.2.0",
     "bson": "4.4.0",
     "cross-fetch": "^3.1.4",
+    "esbuild": "^0.12.11",
     "events": "^3.3.0",
     "int53": "^0.2.4",
     "lodash": "^4.17.21",
@@ -44,7 +45,6 @@
     "@types/chai": "^4.2.16",
     "@types/mocha": "^8.2.2",
     "@types/sinon": "^10.0.0",
-    "@webpack-cli/generators": "^2.2.0",
     "babel-loader": "^8.2.2",
     "babel-plugin-add-module-exports": "^1.0.4",
     "browserfs": "^1.4.3",
@@ -60,16 +60,12 @@
     "stream-browserify": "^3.0.0",
     "ts-loader": "^9.2.3",
     "ts-node": "^9.1.1",
-    "typescript": "^4.3.4",
-    "webpack": "~5.41.0",
-    "webpack-cli": "^4.7.2",
-    "webpack-dev-server": "^3.11.2"
+    "typescript": "^4.3.4"
   },
   "scripts": {
     "build": "npm run build:node",
     "build:node": "tsc -b",
-    "build:browser": "webpack --mode=production --node-env=production",
-    "build:dev": "webpack --mode=development",
+    "build:browser": "esbuild ",
     "build:prod": "webpack --mode=production --node-env=production",
     "type": "tsc --noEmit",
     "lint": "echo 'Linting, it is on the TODO list...'",
@@ -79,6 +75,16 @@
     "thrift": "thrift -out gen-nodejs --gen js:ts parquet.thrift && thrift -out gen-nodejs --gen js:node parquet.thrift",
     "serve": "node wpserver.js"
   },
+  "browser": {
+    "assert": "assert",
+    "events": "events",
+    "fs": "browserfs",
+    "path": "path-browserify",
+    "stream": "readable-stream",
+    "thrift": "./node_modules/thrift/lib/nodejs/lib/thrift/browser.js",
+    "util": "util",
+    "zlib": "browserify-zlib"
+  },
   "engines": {
     "node": ">=14.16.0"
   },
diff --git a/test/integration.js b/test/integration.js
index b7096fa1..9aca582e 100644
--- a/test/integration.js
+++ b/test/integration.js
@@ -476,7 +476,7 @@ describe('Parquet', function() {
     //   const opts = { useDataPageV2: true, compression: 'LZO' };
     //   return writeTestFile(opts);
     // });
-
+    //
     // it('write a test file with LZO compression and then read it back', function() {
     //   const opts = { useDataPageV2: true, compression: 'LZO' };
     //   return writeTestFile(opts).then(readTestFile);
diff --git a/webpack.config.js b/webpack.config.js
index 4a51adf3..b91aaafc 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -1,4 +1,10 @@
-// Generated using webpack-cli https://github.com/webpack/webpack-cli
+/**
+ * Left here in case esbuild stops working for us when we try to re-enable
+ * LZO and Brotli, since it took a lot of time to get the right configuration
+ * Warning: this is much slower than esbuild.
+ * To use, you will need to re-install webpack, webpack-cli, source-map-loader.
+ * @type {path.PlatformPath | path}
+ */
 const path = require('path');
 const webpack = require("webpack")
 
@@ -10,13 +16,13 @@ const BufferPlugin = new webpack.ProvidePlugin({
 const processPlugin = new webpack.ProvidePlugin({ process: 'process/browser', })
 
 let config = {
-    target: 'web',   // should be default
+    target: 'web',   // should be the default
     entry: './bootstrap.js',
     output: {
         path: path.resolve(__dirname),
         filename: "bundle.js",
         library: 'parquetjs',
-        wasmLoading: 'fetch', // should be default when target is 'web'
+        wasmLoading: 'fetch', // should be the default when target is 'web'
     },
     devServer: {
         open: true,
@@ -28,7 +34,7 @@ let config = {
     devtool: "source-map",
     experiments: {
         asyncWebAssembly: true,
-        // topLevelAwait: true
+        // topLevelAwait: true  // maybe not needed?
     },
     plugins: [
         BufferPlugin,
@@ -63,16 +69,8 @@ let config = {
     },
     resolve: {
         extensions: ['.ts', '.js', '.wasm'],
-        //  "browser": {
-        //     "assert": "assert",
-        //     "events": "events",
-        //     "fs": "browserfs"
-        //     "path": "path-browserify",
-        //     "stream": "readable-stream",
-        //     "thrift": "./node_modules/thrift/lib/nodejs/lib/thrift/browser.js",
-        //     "util": "util",
-        //     "zlib": "browserify-zlib",
-        //   },
+        // this uses a browser version of compression.js that
+        //  currently does not include LZO or Brötli comprssion
         alias: {
             "./compression": "./browser/compression"
         },