shovel-config-ts: allow filter_arg to take empty string (#280)

Author: nathanhleung

shovel-config-ts/src/index.ts

@@ -48,7 +48,7 @@ export type FilterReference = {
 
 export type Filter = {
   op: FilterRefOp;
-  arg: Hex[];
+  arg: string[];
 };
 
 export type BlockDataOptions =
@@ -92,7 +92,7 @@ export type BlockData = {
   column: string;
 } & ({
   filter_op?: FilterArgOp;
-  filter_arg?: Hex[];
+  filter_arg?: string[];
 } | {
   filter_op?: FilterRefOp;
   filter_ref?: FilterReference;
@@ -122,7 +122,7 @@ export type EventInput = {
   column?: string;
 } & ({
   filter_op?: FilterArgOp;
-  filter_arg?: Hex[];
+  filter_arg?: string[];
 } | {
   filter_op?: FilterRefOp;
   filter_ref?: FilterReference;