feat!: middleware support refined

src/actions.test.ts

@@ -1,12 +1,12 @@
-import Updux from '.';
+import Updux from ".";
-import u from 'updeep';
+import u from "updeep";
 
 const noopEffect = () => () => () => {};
 
-test('actions defined in effects and mutations, multi-level', () => {
+test.only("actions defined in effects and mutations, multi-level", () => {
   const { actions } = new Updux({
     effects: {
-      foo: noopEffect,
+      foo: noopEffect
     },
     mutations: { bar: () => () => null },
     subduxes: {
@@ -14,25 +14,25 @@ test('actions defined in effects and mutations, multi-level', () => {
         effects: { baz: noopEffect },
         mutations: { quux: () => () => null },
         actions: {
-          foo: (limit:number) => ({limit}),
+          foo: (limit: number) => ({ limit })
-        },
+        }
       },
       myothersub: {
         effects: {
-          foo: noopEffect,
+          foo: noopEffect
-        },
+        }
-      },
+      }
-    },
+    }
   });
 
   const types = Object.keys(actions);
   types.sort();
 
-  expect(types).toEqual(['bar', 'baz', 'foo', 'quux']);
+  expect(types).toEqual(["bar", "baz", "foo", "quux"]);
 
-  expect(actions.bar()).toEqual({type: 'bar'});
+  expect(actions.bar()).toEqual({ type: "bar" });
-  expect(actions.bar('xxx')).toEqual({type: 'bar', payload: 'xxx'});
+  expect(actions.bar("xxx")).toEqual({ type: "bar", payload: "xxx" });
-  expect(actions.bar(undefined, 'yyy')).toEqual({type: 'bar', meta: 'yyy'});
+  expect(actions.bar(undefined, "yyy")).toEqual({ type: "bar", meta: "yyy" });
 
-  expect(actions.foo(12)).toEqual({type: 'foo', payload: {limit: 12}});
+  expect(actions.foo(12)).toEqual({ type: "foo", payload: { limit: 12 } });
 });

src/buildActions/index.ts

@@ -44,32 +44,14 @@ export function actionFor(type: string): ActionCreator {
 
 type ActionPair = [string, ActionCreator];
 
-function buildActions(
+function buildActions(actions: ActionPair[] = []): Dictionary<ActionCreator> {
-  generators: Dictionary<ActionPayloadGenerator> = {},
-  actionNames: string[] = [],
-  subActions: ActionPair[] = []
-): Dictionary<ActionCreator> {
   // priority => generics => generic subs => craft subs => creators
 
   const [crafted, generic] = fp.partition(([type, f]) => !f._genericAction)(
-    subActions
+    fp.compact(actions)
   );
 
-  const actions: any = [
+  return fp.fromPairs([...generic, ...crafted]);
-    ...actionNames.map(type => [type, actionFor(type)]),
-    ...generic,
-    ...crafted,
-    ...Object.entries(
-      generators
-    ).map(([type, payload]: [string, Function]): any => [
-      type,
-      (payload as any).type
-        ? payload
-        : (...args: any) => ({ type, payload: payload(...args) })
-    ])
-  ];
-
-  return fp.fromPairs(actions);
 }
 
 export default buildActions;

src/buildMiddleware/index.ts

@@ -1,10 +1,22 @@
-import fp from 'lodash/fp';
+import fp from "lodash/fp";
 
-import { Middleware, MiddlewareAPI, Dispatch } from 'redux';
+import { Middleware, MiddlewareAPI, Dispatch } from "redux";
-import { Dictionary, ActionCreator, Action, UpduxDispatch, UpduxMiddleware, UpduxMiddlewareAPI } from '../types';
+import {
+  Dictionary,
+  ActionCreator,
+  Action,
+  UpduxDispatch,
+  UpduxMiddleware,
+  UpduxMiddlewareAPI,
+  EffectEntry
+} from "../types";
 
-const MiddlewareFor = (type: any, mw: Middleware ): Middleware => api => next => action => {
+const MiddlewareFor = (
-    if (type !== '*' && action.type !== type) return next(action);
+  type: any,
+  mw: Middleware
+): Middleware => api => next => action => {
+  if (!["*", "^", "$"].includes(type) && action.type !== type)
+    return next(action);
 
   return mw(api)(next)(action);
 };
@@ -12,43 +24,34 @@ const MiddlewareFor = (type: any, mw: Middleware ): Middleware => api => next =>
 type Next = (action: Action) => any;
 
 function sliceMw(slice: string, mw: Middleware): Middleware {
-    return (api) => {
+  return api => {
-        const getSliceState = () => fp.get(slice, api.getState() );
+    const getSliceState =
+      slice.length > 0 ? () => fp.get(slice, api.getState()) : api.getState;
     const getRootState = (api as any).getRootState || api.getState;
-        return mw({...api, getState: getSliceState, getRootState} as any )
+    return mw({ ...api, getState: getSliceState, getRootState } as any);
   };
 }
 
 function buildMiddleware<S = any>(
-    effects : Dictionary<UpduxMiddleware<S>>= {},
+  middlewareEntries: any[] = [],
-    actions : Dictionary<ActionCreator>= {},
+  actions: Dictionary<ActionCreator> = {}
-    subduxes :any = {},
+): UpduxMiddleware<S> {
-): UpduxMiddleware<S>
+  let mws = middlewareEntries
- {
+    .map(([slice, actionType, mw, isGen]: any) =>
-
+      isGen ? [slice, actionType, mw()] : [slice, actionType, mw]
-    const subMiddlewares = fp.flow(
+    )
-        fp.mapValues( fp.get('middleware') ),
+    .map(([slice, actionType, mw]) =>
-        fp.toPairs,
+      MiddlewareFor(actionType, sliceMw(slice, mw))
-        fp.filter(x=>x[1]),
+    );
-        fp.map( ([ slice, mw ]: [ string, Middleware]) => sliceMw(slice,mw) )
-    )( subduxes );
 
   return (api: UpduxMiddlewareAPI<S>) => {
-
     for (let type in actions) {
       const ac = actions[type];
       api.dispatch[type] = (...args: any[]) => api.dispatch(ac(...args));
     }
 
     return (original_next: Next) => {
-      return [
+      return mws.reduceRight((next, mw) => mw(api)(next), original_next);
-        ...fp.toPairs(effects).map(([type, effect]) =>
-            MiddlewareFor(type,effect as Middleware)
-        ),
-        ...subMiddlewares
-      ]
-        .filter(x => x)
-        .reduceRight((next, mw) => mw(api)(next), original_next);
     };
   };
 }

src/middleware.test.ts

@@ -1,7 +1,7 @@
-import Updux from '.';
+import Updux, { actionCreator } from ".";
-import u from 'updeep';
+import u from "updeep";
 
-test('simple effect', () => {
+test("simple effect", () => {
   const tracer = jest.fn();
 
   const store = new Updux({
@@ -9,13 +9,13 @@ test('simple effect', () => {
       foo: (api: any) => (next: any) => (action: any) => {
         tracer();
         next(action);
-      },
+      }
-    },
+    }
   }).createStore();
 
   expect(tracer).not.toHaveBeenCalled();
 
-  store.dispatch({type: 'bar'});
+  store.dispatch({ type: "bar" });
 
   expect(tracer).not.toHaveBeenCalled();
 
@@ -24,11 +24,11 @@ test('simple effect', () => {
   expect(tracer).toHaveBeenCalled();
 });
 
-test('effect and sub-effect', () => {
+test("effect and sub-effect", () => {
   const tracer = jest.fn();
 
   const tracerEffect = (signature: string) => (api: any) => (next: any) => (
-    action: any,
+    action: any
   ) => {
     tracer(signature);
     next(action);
@@ -36,27 +36,27 @@ test('effect and sub-effect', () => {
 
   const store = new Updux({
     effects: {
-      foo: tracerEffect('root'),
+      foo: tracerEffect("root")
     },
     subduxes: {
       zzz: {
         effects: {
-          foo: tracerEffect('child'),
+          foo: tracerEffect("child")
-        },
+        }
-      },
+      }
-    },
+    }
   }).createStore();
 
   expect(tracer).not.toHaveBeenCalled();
 
-  store.dispatch({type: 'bar'});
+  store.dispatch({ type: "bar" });
 
   expect(tracer).not.toHaveBeenCalled();
 
   store.dispatch.foo();
 
-  expect(tracer).toHaveBeenNthCalledWith(1, 'root');
+  expect(tracer).toHaveBeenNthCalledWith(1, "root");
-  expect(tracer).toHaveBeenNthCalledWith(2, 'child');
+  expect(tracer).toHaveBeenNthCalledWith(2, "child");
 });
 
 test('"*" effect', () => {
@@ -64,21 +64,21 @@ test('"*" effect', () => {
 
   const store = new Updux({
     effects: {
-      '*': api => next => action => {
+      "*": api => next => action => {
         tracer();
         next(action);
-      },
+      }
-    },
+    }
   }).createStore();
 
   expect(tracer).not.toHaveBeenCalled();
 
-  store.dispatch({type: 'bar'});
+  store.dispatch({ type: "bar" });
 
   expect(tracer).toHaveBeenCalled();
 });
 
-test('async effect', async () => {
+test("async effect", async () => {
   function timeout(ms: number) {
     return new Promise(resolve => setTimeout(resolve, ms));
   }
@@ -91,8 +91,8 @@ test('async effect', async () => {
         next(action);
         await timeout(1000);
         tracer();
-      },
+      }
-    },
+    }
   }).createStore();
 
   expect(tracer).not.toHaveBeenCalled();
@@ -106,7 +106,7 @@ test('async effect', async () => {
   expect(tracer).toHaveBeenCalled();
 });
 
-test('getState is local', () => {
+test("getState is local", () => {
   let childState;
   let rootState;
   let rootFromChild;
@@ -118,8 +118,8 @@ test('getState is local', () => {
         childState = getState();
         rootFromChild = getRootState();
         next(action);
-      },
+      }
-    },
+    }
   });
 
   const root = new Updux({
@@ -129,8 +129,8 @@ test('getState is local', () => {
       doIt: ({ getState }) => next => action => {
         rootState = getState();
         next(action);
-      },
+      }
-    },
+    }
   });
 
   const store = root.createStore();
@@ -140,3 +140,89 @@ test('getState is local', () => {
   expect(rootFromChild).toEqual({ beta: 24, child: { alpha: 12 } });
   expect(childState).toEqual({ alpha: 12 });
 });
+
+test("middleware as map", () => {
+  let childState;
+  let rootState;
+  let rootFromChild;
+
+  const doIt = actionCreator("doIt");
+
+  const child = new Updux({
+    initial: "",
+    effects: [
+      [
+        doIt,
+        () => next => action => {
+          next(u({ payload: (p: string) => p + "Child" }, action) as any);
+        }
+      ]
+    ]
+  });
+
+  const root = new Updux({
+    initial: { message: "" },
+    subduxes: { child },
+    effects: [
+      [
+        "^",
+        () => next => action => {
+          next(u({ payload: (p: string) => p + "Pre" }, action) as any);
+        }
+      ],
+      [
+        doIt,
+        () => next => action => {
+          next(u({ payload: (p: string) => p + "Root" }, action) as any);
+        }
+      ],
+      [
+        "*",
+        () => next => action => {
+          next(u({ payload: (p: string) => p + "After" }, action) as any);
+        }
+      ],
+      [
+        "$",
+        () => next => action => {
+          next(u({ payload: (p: string) => p + "End" }, action) as any);
+        }
+      ]
+    ],
+    mutations: [[doIt, (message: any) => () => ({ message })]]
+  });
+
+  const store = root.createStore();
+  store.dispatch.doIt("");
+
+  expect(store.getState()).toEqual({ message: "PreRootAfterChildEnd" });
+});
+
+test("generator", () => {
+  const updux = new Updux({
+    initial: 0,
+    mutations: [["doIt", payload => () => payload]],
+    effects: [
+      [
+        "doIt",
+        () => {
+          let i = 0;
+          return () => (next: any) => (action: any) =>
+            next({ ...action, payload: ++i });
+        },
+        true
+      ]
+    ]
+  });
+
+  const store1 = updux.createStore();
+  store1.dispatch.doIt();
+  expect(store1.getState()).toEqual(1);
+  store1.dispatch.doIt();
+  expect(store1.getState()).toEqual(2);
+  updux.actions;
+
+  const store2 = updux.createStore();
+  store2.dispatch.doIt();
+  expect(store2.getState()).toEqual(1);
+});

src/types.ts

@@ -183,9 +183,15 @@ export type UpduxConfig<S = any> = {
    * ```
    *
    */
-  effects?: Dictionary<UpduxMiddleware<S>>;
+  effects?: Dictionary<UpduxMiddleware<S>> | EffectEntry<S>[];
 };
 
+export type EffectEntry<S> = [
+  ActionCreator | string,
+  UpduxMiddleware<S>,
+  boolean?
+];
+
 export type Upreducer<S = any> = (action: Action) => (state: S) => S;
 
 export interface UpduxMiddlewareAPI<S> {

src/updux.ts

@@ -1,8 +1,7 @@
 import fp from "lodash/fp";
 import u from "updeep";
-import { observable, computed, toJS } from "mobx";
 
-import buildActions, { actionFor } from "./buildActions";
+import buildActions, { actionFor, actionCreator } from "./buildActions";
 import buildInitial from "./buildInitial";
 import buildMutations from "./buildMutations";
 
@@ -18,7 +17,8 @@ import {
   Upreducer,
   UpduxDispatch,
   UpduxMiddleware,
-  MutationEntry
+  MutationEntry,
+  EffectEntry
 } from "./types";
 
 import { Middleware, Store } from "redux";
@@ -99,11 +99,11 @@ export class Updux<S = any> {
    */
   groomMutations: (mutation: Mutation<S>) => Mutation<S>;
 
-  @observable private localEffects: Dictionary<UpduxMiddleware<S>>;
+  private localEffects: EffectEntry<S>[] = [];
 
-  @observable private localActions: Dictionary<ActionCreator>;
+  private localActions: Dictionary<ActionCreator> = {};
 
-  @observable private localMutations: Dictionary<
+  private localMutations: Dictionary<
     Mutation<S> | [Mutation<S>, boolean | undefined]
   > = {};
 
@@ -114,9 +114,18 @@ export class Updux<S = any> {
       fp.isPlainObject(value) ? new Updux(value) : value
     )(fp.getOr({}, "subduxes", config)) as Dictionary<Updux>;
 
-    this.localActions = fp.getOr({}, "actions", config);
+    const actions = fp.getOr({}, "actions", config);
+    Object.entries(actions).forEach(([type, payload]: [string, any]): any =>
+      this.addAction(
+        (payload as any).type ? payload : actionCreator(type, payload as any)
+      )
+    );
 
-    this.localEffects = fp.getOr({}, "effects", config);
+    let effects = fp.getOr([], "effects", config);
+    if (!Array.isArray(effects)) {
+      effects = Object.entries(effects);
+    }
+    effects.forEach(effect => this.addEffect(...effect));
 
     this.initial = buildInitial<any>(
       config.initial,
@@ -132,15 +141,15 @@ export class Updux<S = any> {
   }
 
   /**
-   * A middleware aggregating all the effects defined in the
+   * Array of middlewares aggregating all the effects defined in the
    * updux and its subduxes. Effects of the updux itself are
    * done before the subduxes effects.
    * Note that `getState` will always return the state of the
    * local updux. The function `getRootState` is provided
    * alongside `getState` to get the root state.
    */
-  @computed get middleware(): UpduxMiddleware<S> {
+  get middleware(): UpduxMiddleware<S> {
-    return buildMiddleware(this.localEffects, this.actions, this.subduxes);
+    return buildMiddleware(this._middlewareEntries, this.actions);
   }
 
   /**
@@ -157,19 +166,19 @@ export class Updux<S = any> {
    *     actions generated from mutations/effects < non-custom subduxes actions <
    *     custom subduxes actions < custom actions
    */
-  @computed get actions(): Dictionary<ActionCreator> {
+  get actions(): Dictionary<ActionCreator> {
-    return buildActions(
+    return buildActions([
-      this.localActions,
+      ...(Object.entries(this.localActions) as any),
-      [...Object.keys(this.localMutations), ...Object.keys(this.localEffects)],
+      ...(fp.flatten(
-      fp.flatten(
         Object.values(this.subduxes).map(({ actions }: Updux) =>
           Object.entries(actions)
         )
-      )
+      ) as any),
-    );
+      ,
+    ]);
   }
 
-  @computed get upreducer(): Upreducer<S> {
+  get upreducer(): Upreducer<S> {
     return buildUpreducer(this.initial, this.mutations);
   }
 
@@ -177,7 +186,7 @@ export class Updux<S = any> {
    * A Redux reducer generated using the computed initial state and
    * mutations.
    */
-  @computed get reducer(): (state: S | undefined, action: Action) => S {
+  get reducer(): (state: S | undefined, action: Action) => S {
     return (state, action) => this.upreducer(action)(state as S);
   }
 
@@ -186,7 +195,7 @@ export class Updux<S = any> {
    * mutations in both the main updux and its subduxes, the subduxes
    * mutations will be performed first.
    */
-  @computed get mutations(): Dictionary<Mutation<S>> {
+  get mutations(): Dictionary<Mutation<S>> {
     return buildMutations(this.localMutations, this.subduxes);
   }
 
@@ -207,7 +216,7 @@ export class Updux<S = any> {
    * );
    * ```
    */
-  @computed get subduxUpreducer() {
+  get subduxUpreducer() {
     return buildUpreducer(this.initial, buildMutations({}, this.subduxes));
   }
 
@@ -236,14 +245,14 @@ export class Updux<S = any> {
    * // still work
    * store.dispatch( actions.addTodo(...) );
    */
-  @computed get createStore(): () => StoreWithDispatchActions<S> {
+  get createStore(): () => StoreWithDispatchActions<S> {
     const actions = this.actions;
 
     return buildCreateStore<S>(
       this.reducer,
       this.initial,
-      this.middleware as Middleware,
+      this.middleware as any,
-      this.actions
+      actions
     ) as () => StoreWithDispatchActions<S, typeof actions>;
   }
 
@@ -285,13 +294,67 @@ export class Updux<S = any> {
   ) {
     let c = fp.isFunction(creator) ? creator : actionFor(creator);
 
-    this.localActions[c.type] = c;
+    this.addAction(c);
 
     this.localMutations[c.type] = [
       this.groomMutations(mutation as any) as Mutation<S>,
       isSink
     ];
   }
+
+  addEffect(
+    creator: ActionCreator | string,
+    middleware: UpduxMiddleware<S>,
+    isGenerator: boolean = false
+  ) {
+    let c = fp.isFunction(creator) ? creator : actionFor(creator);
+
+    this.addAction(c);
+    this.localActions[c.type] = c;
+    this.localEffects.push([c.type, middleware, isGenerator]);
+  }
+
+  addAction(action: string | ActionCreator<any>) {
+    if (typeof action === "string") {
+      if (!this.localActions[action]) {
+        this.localActions[action] = actionFor(action);
+      }
+    } else {
+      this.localActions[action.type] = action;
+    }
+  }
+
+  get _middlewareEntries() {
+    const groupByOrder = (mws: any) =>
+      fp.groupBy(
+        ([_, actionType]: any) =>
+          ["^", "$"].includes(actionType) ? actionType : "middle",
+        mws
+      );
+
+    let subs = fp.flow([
+      fp.mapValues("_middlewareEntries"),
+      fp.toPairs,
+      fp.map(([slice, entries]) =>
+        entries.map(([ps, ...args]: any) => [[slice, ...ps], ...args])
+      ),
+      fp.flatten,
+      groupByOrder
+    ])(this.subduxes);
+
+    let local = groupByOrder(this.localEffects.map(x => [[], ...x]));
+
+    return fp.flatten(
+      [
+        local["^"],
+        subs["^"],
+        local.middle,
+        subs.middle,
+        subs["$"],
+        local["$"]
+      ].filter(x => x)
+    );
+  }
 }
 
 export default Updux;