separate compression

Author: paula-stacho

packages/oidc-http-server-pages/src/create-templates.ts

@@ -16,7 +16,7 @@ import {
   OIDCNotFoundPage,
 } from './pages-source';
 import React from 'react';
-import { gzipSync } from 'zlib';
+import { gzipSync, brotliCompressSync, constants as zlibConstants } from 'zlib';
 import { writeFileSync } from 'fs';
 import path from 'path';
 import type { PageTemplates, ITemplate } from './types';
@@ -84,26 +84,23 @@ export function generateTemplates<TPage extends string = HttpServerPage>(
   return templates as PageTemplates<TPage>;
 }
 
-export function generateCompressedTemplates<
-  TPage extends string = HttpServerPage
->(
-  pages: Record<
-    TPage,
-    {
-      Component: Component;
-      parameters: string[];
-    }
-  >
-): void {
-  const templates = generateTemplates(pages);
-  const buffer = gzipSync(JSON.stringify(templates));
+function generateGzip(data: string): void {
+  const buffer = gzipSync(data);
   writeFileSync(path.join(__dirname, 'templates.gz'), buffer, 'binary');
+}
 
+function generateJS(data: string): void {
+  const buffer = brotliCompressSync(data, {
+    params: {
+      [zlibConstants.BROTLI_PARAM_MODE]: zlibConstants.BROTLI_MODE_TEXT,
+      [zlibConstants.BROTLI_PARAM_QUALITY]: zlibConstants.BROTLI_MAX_QUALITY,
+    },
+  });
   writeFileSync(
     path.join(__dirname, 'templates.js'),
     `
-    const { gunzipSync } = require('zlib');
-    const buffer = gunzipSync(
+    const { brotliDecompressSync } = require('zlib');
+    const buffer = brotliDecompressSync(
       Buffer.from(
         '${buffer.toString('base64')}', 
         'base64'
@@ -114,6 +111,22 @@ export function generateCompressedTemplates<
   );
 }
 
+export function generateCompressedTemplates<
+  TPage extends string = HttpServerPage
+>(
+  pages: Record<
+    TPage,
+    {
+      Component: Component;
+      parameters: string[];
+    }
+  >
+): void {
+  const templates = JSON.stringify(generateTemplates(pages));
+  generateGzip(templates);
+  generateJS(templates);
+}
+
 if (require.main === module) {
   generateCompressedTemplates({
     [HttpServerPage.OIDCErrorPage]: {