createStore and initialState

.gitignore

@@ -9,3 +9,4 @@ pnpm-debug.log
 yarn-error.log
 GPUCache/
 updux-2.0.0.tgz
+pnpm-lock.yaml

Taskfile.yaml

@@ -3,6 +3,9 @@
 version: '3'
 
 tasks:
+    test: vitest run src
+    test:dev: vitest src
+
     lint:fix:delta:
         vars:
             FILES:

package.json

@@ -29,6 +29,7 @@
     },
     "homepage": "https://github.com/yanick/updux#readme",
     "devDependencies": {
+        "@reduxjs/toolkit": "^1.9.3",
         "@vitest/browser": "^0.23.1",
         "@vitest/ui": "^0.23.1",
         "eslint": "^8.22.0",
@@ -36,6 +37,7 @@
         "eslint-plugin-todo-plz": "^1.2.1",
         "jsdoc-to-markdown": "^7.1.1",
         "prettier": "^2.7.1",
+        "redux-toolkit": "^1.1.2",
         "typescript": "^4.9.5",
         "vitest": "0.23.1"
     }

src/Updux.ts

@@ -1,17 +1,38 @@
-export default class Updux<T_Local_State = Record<any, any>> {
+import {
+    createStore as reduxCreateStore,
+    applyMiddleware,
+    DeepPartial,
+} from 'redux';
+import { configureStore, Reducer } from '@reduxjs/toolkit';
+
+export default class Updux<T_LocalState = Record<any, any>> {
     #local_initial: T_Local_State;
 
     constructor(
         config: Partial<{
-            initial: T_Local_State;
+            initial: T_LocalState;
         }>,
     ) {
-        // TODO test that we default to {}
-        this.#local_initial = config.initial ?? ({} as T_Local_State);
+        // TODO check that we can't alter the initial after the fact
+        this.#local_initial = config.initial ?? ({} as T_LocalState);
     }
 
     // TODO memoize?
     get initial() {
         return this.#local_initial;
     }
+
+    createStore(
+        options: Partial<{
+            initial: T_LocalState;
+        }> = {},
+    ) {
+        const preloadedState = options.initial ?? this.initial;
+        const store = configureStore({
+            reducer: ((state) => state) as Reducer<T_LocalState, any>,
+            preloadedState,
+        });
+
+        return store;
+    }
 }

src/tutorial.test.ts

@@ -3,20 +3,38 @@ import Updux from './index.js';
 const expectType = <T>(value: T) => value;
 
 test('initial state', () => {
-    const { initial } = new Updux({
-        initial: {
-            next_id: 1,
-            todos: [],
-        },
+    const initial = {
+        next_id: 1,
+        todos: [],
+    };
+    const dux = new Updux({
+        initial,
     });
 
     expectType<{
         next_id: number;
         todos: unknown[];
-    }>(initial);
+    }>(dux.initial);
 
-    expect(initial).toEqual({
-        next_id: 1,
-        todos: [],
+    expect(dux.initial).toEqual(initial);
+
+    const store = dux.createStore();
+
+    expect(store.getState()).toEqual(initial);
+});
+
+test('initial to createStore', () => {
+    const initial = {
+        a: 1,
+        b: 2,
+    };
+
+    const dux = new Updux({
+        initial,
+    });
+
+    expect(dux.createStore({ initial: { a: 3, b: 4 } }).getState()).toEqual({
+        a: 3,
+        b: 4,
     });
 });

tsconfig.json

@@ -27,7 +27,7 @@
         /* Modules */
         "module": "ES2020" /* Specify what module code is generated. */,
         // "rootDir": "./",                                  /* Specify the root folder within your source files. */
-        // "moduleResolution": "node",                       /* Specify how TypeScript looks up a file from a given module specifier. */
+        "moduleResolution": "node" /* Specify how TypeScript looks up a file from a given module specifier. */,
         // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
         // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
         // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */