Add zstd Compressor

packages/compressors/zstd/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "@parcel/compressor-zstd",
+  "version": "2.13.3",
+  "license": "MIT",
+  "publishConfig": {
+    "access": "public"
+  },
+  "funding": {
+    "type": "opencollective",
+    "url": "https://opencollective.com/parcel"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/parcel-bundler/parcel.git"
+  },
+  "main": "lib/ZstdCompressor.js",
+  "source": "src/ZstdCompressor.js",
+  "engines": {
+    "node": ">= 16.0.0",
+    "parcel": "^2.13.3"
+  },
+  "dependencies": {
+    "@mongodb-js/zstd": "^2.0.0",
+    "@parcel/plugin": "2.13.3"
+  }
+}

packages/compressors/zstd/src/ZstdCompressor.js

@@ -0,0 +1,26 @@
+// @flow
+import {Compressor} from '@parcel/plugin';
+import {compress} from '@mongodb-js/zstd';
+import {Transform} from 'stream';
+
+export default (new Compressor({
+  compress({options, stream}) {
+    if (options.mode !== 'production') {
+      return null;
+    }
+
+    return {
+      stream: stream.pipe(
+        new Transform({
+          transform(chunk, encoding, cb) {
+            compress(chunk, 19).then(
+              compressed => cb(null, compressed),
+              error => cb(error, null),
+            );
+          },
+        }),
+      ),
+      type: 'zst',
+    };
+  },
+}): Compressor);

packages/core/integration-tests/package.json

@@ -51,6 +51,7 @@
     "tailwindcss": "^3.0.2",
     "tempy": "^0.3.0",
     "wasm-sourcemap": "^1.0.0",
-    "ws": "^8.18.0"
+    "ws": "^8.18.0",
+    "@mongodb-js/zstd": "^2.0.0"
   }
 }

packages/core/integration-tests/test/compressors.js

@@ -2,36 +2,44 @@ import assert from 'assert';
 import path from 'path';
 import zlib from 'zlib';
 import {bundle, outputFS, distDir} from '@parcel/test-utils';
+import {decompress} from '@mongodb-js/zstd';
 
 describe('compressors', function () {
-  it('should not compress output with gzip and brotli in development', async function () {
+  it('should not compress output with gzip, brotli, or zstd in development', async function () {
     await bundle(path.join(__dirname, 'integration/compressors/index.js'));
 
     let output = await outputFS.readdir(distDir);
     assert.deepEqual(output.sort(), ['index.js', 'index.js.map']);
   });
 
-  it('should compress output with gzip and brotli', async function () {
+  it('should compress output with gzip, brotli, and zstd', async function () {
     await bundle(path.join(__dirname, 'integration/compressors/index.js'), {
       mode: 'production',
     });
 
     let output = await outputFS.readdir(distDir);
-    assert.deepEqual(output.sort(), [
-      'index.js',
-      'index.js.br',
-      'index.js.gz',
-      'index.js.map',
-      'index.js.map.br',
-      'index.js.map.gz',
-    ]);
+    assert.deepEqual(
+      output.sort(),
+      [
+        'index.js',
+        'index.js.br',
+        'index.js.gz',
+        'index.js.zst',
+        'index.js.map',
+        'index.js.map.br',
+        'index.js.map.gz',
+        'index.js.map.zst',
+      ].sort(),
+    );
 
     let raw = await outputFS.readFile(path.join(distDir, 'index.js'));
     let gz = await outputFS.readFile(path.join(distDir, 'index.js.gz'));
     let br = await outputFS.readFile(path.join(distDir, 'index.js.br'));
+    let zstd = await outputFS.readFile(path.join(distDir, 'index.js.zst'));
 
     assert(zlib.gunzipSync(gz).equals(raw));
     assert(zlib.brotliDecompressSync(br).equals(raw));
+    assert((await decompress(zstd)).equals(raw));
   });
 
   it('should be able to disable raw output', async function () {

packages/core/integration-tests/test/integration/compressors/.parcelrc

@@ -1,6 +1,6 @@
 {
   "extends": ["@parcel/config-default"],
   "compressors": {
-    "*": ["...", "@parcel/compressor-gzip", "@parcel/compressor-brotli"]
+    "*": ["...", "@parcel/compressor-gzip", "@parcel/compressor-brotli", "@parcel/compressor-zstd"]
   }
 }