From 871298dae5ced1ba12b0c81e80ebf1bd79fb80fd Mon Sep 17 00:00:00 2001
From: Wilson Lin <code@wilsonl.in>
Date: Sun, 12 Jul 2020 16:17:43 +1000
Subject: [PATCH] Use compression for Node.js binaries

---
 .github/workflows/nodejs.yml | 3 ++-
 nodejs/compress.js           | 7 +++++++
 nodejs/postinstall.js        | 5 +++--
 3 files changed, 12 insertions(+), 3 deletions(-)
 create mode 100644 nodejs/compress.js

diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 2710af2..77f8e81 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -59,6 +59,7 @@ jobs:
         run: |
           npm install
           npm run build-binary
+          node compress.js
       - name: Install B2 CLI (macOS, Linux)
         if: runner.os != 'Windows'
         run: |
@@ -73,7 +74,7 @@ jobs:
         run: |
           binary_name="$(node -e 'console.log([process.platform, process.arch, process.versions.modules].join("__"))')"
           b2 authorize-account ${{ secrets.CICD_CLI_B2_KEY_ID }} ${{ secrets.CICD_CLI_B2_APPLICATION_KEY }}
-          b2 upload-file ${{ secrets.CICD_CLI_B2_BUCKET_NAME }} ./nodejs/dist/native.node "minify-html/bin/nodejs/${{ steps.version.outputs.VERSION }}/$binary_name.node"
+          b2 upload-file ${{ secrets.CICD_CLI_B2_BUCKET_NAME }} ./nodejs/dist/native.node.gz "minify-html/bin/nodejs/${{ steps.version.outputs.VERSION }}/$binary_name.node.gz"
   package:
     runs-on: ubuntu-latest
     needs: build
diff --git a/nodejs/compress.js b/nodejs/compress.js
new file mode 100644
index 0000000..88e75f0
--- /dev/null
+++ b/nodejs/compress.js
@@ -0,0 +1,7 @@
+const {readFileSync, writeFileSync} = require('fs');
+const {join} = require('path');
+const {gzipSync} = require('zlib');
+
+const src = readFileSync(join(__dirname, 'dist', 'native.node'));
+const out = gzipSync(src);
+writeFileSync(join(__dirname, 'dist', 'native.node.gz'), out);
diff --git a/nodejs/postinstall.js b/nodejs/postinstall.js
index 89fd851..6a67ed1 100644
--- a/nodejs/postinstall.js
+++ b/nodejs/postinstall.js
@@ -1,6 +1,7 @@
 const fs = require('fs');
 const https = require('https');
 const path = require('path');
+const zlib = require('zlib');
 const pkg = require('./package.json');
 
 const MAX_DOWNLOAD_ATTEMPTS = 4;
@@ -33,7 +34,7 @@ const downloadNativeBinary = async () => {
   for (let attempt = 0; ; attempt++) {
     let binary;
     try {
-      binary = await fetch(`https://wilsonl.in/minify-html/bin/nodejs/${pkg.version}/${binaryName}.node`);
+      binary = await fetch(`https://wilsonl.in/minify-html/bin/nodejs/${pkg.version}/${binaryName}.node.gz`);
     } catch (e) {
       if (e instanceof StatusError && attempt < MAX_DOWNLOAD_ATTEMPTS) {
         await wait(Math.random() * 2500 + 500);
@@ -42,7 +43,7 @@ const downloadNativeBinary = async () => {
       throw e;
     }
 
-    fs.writeFileSync(binaryPath, binary);
+    fs.writeFileSync(binaryPath, zlib.gunzipSync(binary));
     break;
   }
 };