message: fix: Ensure stream is fully buffered.
  Needs a more permanent fix for Very Large Streams.
diff: @@ -151,10 +151,11 @@ export class InMemoryResourceStore implements ResourceStore {
  // Note: when converting to a complete ResourceStore and using readable-stream
  // object mode should be set correctly here (now fixed due to Node 10)
  const source = this.store[path];
  - const streamInternal = new PassThrough({ writableObjectMode: true, readableObjectMode: true });
  - const streamOutput = new PassThrough({ writableObjectMode: true, readableObjectMode: true });
  - source.data.pipe(streamInternal);
  + const objectMode = { writableObjectMode: true, readableObjectMode: true };
  + const streamOutput = new PassThrough(objectMode);
  + const streamInternal = new PassThrough({ ...objectMode, highWaterMark: Number.MAX_SAFE_INTEGER });
  source.data.pipe(streamOutput);
  + source.data.pipe(streamInternal);
  source.data = streamInternal;
  