only attempt to use custom compression filter when option value is provided

Author: b0b3rt

packages/grpc-js/package.json

@@ -59,7 +59,7 @@
   },
   "dependencies": {
     "@grpc/proto-loader": "^0.6.4",
-    "@types/node": "16.10.0",
+    "@types/node": ">=12.12.47",
     "@types/semver": "^7.3.9"
   },
   "files": [

packages/grpc-js/src/compression-filter.ts

@@ -185,11 +185,13 @@ export class CompressionFilter extends BaseFilter implements Filter {
     super();
 
     const compressionAlgorithmKey = channelOptions['grpc.default_compression_algorithm'];
-    if (isCompressionAlgorithmKey(compressionAlgorithmKey)) {
-      this.defaultCompressionAlgorithm = CompressionAlgorithms[compressionAlgorithmKey];
-      this.sendCompression = getCompressionHandler(this.defaultCompressionAlgorithm);
-    } else {
-      logging.log(LogVerbosity.ERROR, 'Invalid value provided for grpc.default_compression_algorithm option');
+    if (compressionAlgorithmKey !== undefined) {
+      if (isCompressionAlgorithmKey(compressionAlgorithmKey)) {
+        this.defaultCompressionAlgorithm = CompressionAlgorithms[compressionAlgorithmKey];
+        this.sendCompression = getCompressionHandler(this.defaultCompressionAlgorithm);
+      } else {
+        logging.log(LogVerbosity.ERROR, 'Invalid value provided for grpc.default_compression_algorithm option');
+      }
     }
   }