feat(NODE-1837): adding level option to client and uri

Author: durran

src/cmap/connection.ts

@@ -795,6 +795,10 @@ function write(
     if (conn[kDescription].zlibCompressionLevel) {
       operationDescription.zlibCompressionLevel = conn[kDescription].zlibCompressionLevel;
     }
+
+    if (conn[kDescription].zstdCompressionLevel) {
+      operationDescription.zstdCompressionLevel = conn[kDescription].zstdCompressionLevel;
+    }
   }
 
   if (typeof options.socketTimeoutMS === 'number') {

src/cmap/stream_description.ts

@@ -36,6 +36,7 @@ export class StreamDescription {
   __nodejs_mock_server__?: boolean;
 
   zlibCompressionLevel?: number;
+  zstdCompressionLevel?: number;
 
   constructor(address: string, options?: StreamDescriptionOptions) {
     this.address = address;

src/connection_string.ts

@@ -1210,6 +1210,10 @@ export const OPTIONS = {
     default: 0,
     type: 'int'
   },
+  zstdCompressionLevel: {
+    default: 3,
+    type: 'int'
+  },
   // Custom types for modifying core behavior
   connectionType: { type: 'any' },
   srvPoller: { type: 'any' },

src/mongo_client.ts

@@ -127,6 +127,32 @@ export interface MongoClientOptions extends BSONSerializeOptions, SupportedNodeC
   compressors?: CompressorName[] | string;
   /** An integer that specifies the compression level if using zlib for network compression. */
   zlibCompressionLevel?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | undefined;
+  /** An integer specifying zstd compression level. */
+  zstdCompressionLevel?:
+    | 0
+    | 1
+    | 2
+    | 3
+    | 4
+    | 5
+    | 6
+    | 7
+    | 8
+    | 9
+    | 10
+    | 11
+    | 12
+    | 13
+    | 14
+    | 15
+    | 16
+    | 17
+    | 18
+    | 19
+    | 20
+    | 21
+    | 22
+    | undefined;
   /** The maximum number of hosts to connect to when using an srv connection string, a setting of `0` means unlimited hosts */
   srvMaxHosts?: number;
   /**
@@ -658,6 +684,7 @@ export interface MongoOptions
         | 'tlsInsecure'
         | 'waitQueueTimeoutMS'
         | 'zlibCompressionLevel'
+        | 'zstdCompressionLevel'
       >
     >,
     SupportedNodeConnectionOptions {