fix: Made selector return types generic (#1688)

fixes #1687

Author: bmingles

packages/code-studio/src/styleguide/grid-examples/DataBarExample.tsx

@@ -1,6 +1,6 @@
 import React, { useState } from 'react';
 import { Grid, MockDataBarGridModel } from '@deephaven/grid';
-import { ColorMap } from 'packages/grid/src/DataBarGridModel';
+import type { ColorMap } from '@deephaven/grid';
 
 function DataBarExample(): JSX.Element {
   const columnData = [100, 50, 20, 10, -10, -20, -50, -30, 100, 0, 1];

packages/iris-grid/src/IrisGridTableModelTemplate.ts

@@ -39,13 +39,13 @@ import {
   assertNotNull,
 } from '@deephaven/utils';
 import { TableUtils, Formatter, FormatterUtils } from '@deephaven/jsapi-utils';
-import {
+import type {
   AxisOption,
   DataBarOptions,
   DirectionOption,
   Marker,
   ValuePlacementOption,
-} from 'packages/grid/src/DataBarGridModel';
+} from '@deephaven/grid';
 import IrisGridModel from './IrisGridModel';
 import AggregationOperation from './sidebar/aggregations/AggregationOperation';
 import IrisGridUtils from './IrisGridUtils';

packages/redux/src/selectors.ts

@@ -1,8 +1,5 @@
-import type {
-  CustomizableWorkspace,
-  RootState,
-  WorkspaceSettings,
-} from './store';
+import type { UndoPartial } from '@deephaven/utils';
+import type { RootState, WorkspaceSettings } from './store';
 
 const EMPTY_OBJECT = Object.freeze({});
 
@@ -52,15 +49,15 @@ export const getDefaultWorkspaceSettings = <State extends RootState>(
 // Workspace
 export const getWorkspace = <State extends RootState>(
   store: State
-): CustomizableWorkspace => {
+): State['workspace'] => {
   const { workspace } = store;
   return workspace;
 };
 
 // Settings
 export const getSettings = <State extends RootState>(
   store: State
-): WorkspaceSettings => {
+): UndoPartial<State['workspace']['data']['settings']> => {
   const customizedSettings = getWorkspace(store).data.settings;
 
   const settings = { ...getDefaultWorkspaceSettings(store) };
@@ -72,7 +69,7 @@ export const getSettings = <State extends RootState>(
       settings[key] = customizedSettings[key];
     }
   }
-  return settings;
+  return settings as UndoPartial<State['workspace']['data']['settings']>;
 };
 
 export const getDefaultSettings = <State extends RootState>(

packages/utils/src/TypeUtils.ts

@@ -27,6 +27,13 @@ export type OnlyOneProp<T> = {
   [P in keyof T]: { [ONEPROP in P]: T[ONEPROP] };
 }[keyof T];
 
+/**
+ * Remove `Partial` wrapper from a type. Note that this is slightly different
+ * than `Required` because it will preserve optional properties on the original
+ * target type.
+ */
+export type UndoPartial<T> = T extends Partial<infer U> ? U : never;
+
 /**
  * Util type to extract the value from an object.
  *