feat(compression): make threshold configurable

sveltejs · Jul 13, 2022 · ace0b24 · ace0b24
1 parent f9832a4
commit ace0b24
Show file tree

Hide file tree

Showing 2 changed files with 12 additions and 2 deletions.
diff --git a/packages/adapter-node/src/env.js b/packages/adapter-node/src/env.js
@@ -9,7 +9,8 @@ const expected = new Set([
 	'ADDRESS_HEADER',
 	'PROTOCOL_HEADER',
 	'HOST_HEADER',
-	'COMPRESSION_ENABLED'
+	'COMPRESSION_ENABLED',
+	'COMPRESSION_THRESHOLD'
 ]);
 
 if (ENV_PREFIX) {

diff --git a/packages/adapter-node/src/index.js b/packages/adapter-node/src/index.js
@@ -1,3 +1,5 @@
+/* global ENV_PREFIX */
+
 import { handler } from './handler.js';
 import { env } from './env.js';
 import compression from 'compression';
@@ -7,8 +9,15 @@ export const path = env('SOCKET_PATH', false);
 export const host = env('HOST', '0.0.0.0');
 export const port = env('PORT', !path && '3000');
 export const compression_enabled = env('COMPRESSION_ENABLED', 'true') === 'true';
+export const compression_threshold = parseInt(env('COMPRESSION_THRESHOLD', '0'), 10);
+
+if (isNaN(compression_threshold) || compression_threshold < 0) {
+	throw Error(`${ENV_PREFIX}COMPRESSION_THRESHOLD should be a positve number`);
+}
 
-const compression_middleware = compression_enabled ? compression({ threshold: 0 }) : undefined;
+const compression_middleware = compression_enabled
+	? compression({ threshold: compression_threshold })
+	: undefined;
 
 const middlewares = [compression_middleware, handler].filter(Boolean);