Bar graph added.

node_modules/vega-dataflow/index.js

@@ -0,0 +1,31 @@
+// Utilities
+export {default as UniqueList} from './src/util/UniqueList';
+export {default as asyncCallback} from './src/util/asyncCallback';
+
+// Core Runtime
+export {default as changeset, isChangeSet} from './src/ChangeSet';
+export {default as Dataflow} from './src/dataflow/Dataflow';
+export {default as EventStream} from './src/EventStream';
+export {default as Parameters} from './src/Parameters';
+export {default as Pulse} from './src/Pulse';
+export {default as MultiPulse} from './src/MultiPulse';
+export {default as Operator} from './src/Operator';
+export {default as Transform} from './src/Transform';
+
+// Tuple Methods
+export {
+  derive,
+  ingest,
+  isTuple,
+  rederive,
+  replace,
+  stableCompare,
+  tupleid
+} from './src/Tuple';
+
+// Transform Registry
+export {
+  definition,
+  transform,
+  transforms
+} from './src/register';