New component function, refactor TodoMVC

examples/counters/src/index.ts

@@ -1,32 +1,26 @@
-import { Behavior, combine, stepper, Stream } from "@funkia/hareactive";
+import { Behavior, stepper, Stream } from "@funkia/hareactive";
 import { go } from "@funkia/jabz";
-import { elements, fgo, modelView, runComponent } from "../../../src";
+import { elements, fgo, runComponent, view, component } from "../../../src";
 import { main1 } from "./version1";
 import { main2 } from "./version2";
 import { main3 } from "./version3";
-import { counterList as main4 } from "./version4";
+import { main4 } from "./version4";
 
 const { button, div } = elements;
 
-const numberToApp = {
-  "1": main1,
-  "2": main2,
-  "3": main3,
-  "4": main4
-};
+const numberToApp = { "1": main1, "2": main2, "3": main3, "4": main4 };
 
 type AppId = keyof (typeof numberToApp);
 
-function selectorButton(n: AppId, selected: Behavior<AppId>) {
-  return button(
-    {
-      class: ["btn btn-default", { active: selected.map((m) => n === m) }]
-    },
-    `Version ${n}`
-  ).map(({ click }) => ({
-    select: click.mapTo(n)
-  }));
-}
+const selectorButton = (n: AppId, selected: Behavior<AppId>) =>
+  view(
+    button(
+      {
+        class: ["btn btn-default", { active: selected.map((m) => n === m) }]
+      },
+      `Version ${n}`
+    ).output((o) => ({ selectVersion: o.click.mapTo(n).log(n) }))
+  );
 
 type FromView = {
   selectVersion: Stream<AppId>;
@@ -36,26 +30,20 @@ type FromModel = {
   selected: Behavior<AppId>;
 };
 
-const versionSelector = modelView<FromModel, FromView>(
+const versionSelector = component<FromView, FromModel>(
   fgo(function*({ selectVersion }) {
     const selected = yield stepper("1", selectVersion);
-    return { selected };
-  }),
-  ({ selected }) =>
-    div({ class: "btn-group" }, [
-      selectorButton("1", selected).output({ select1: "select" }),
-      selectorButton("2", selected).output({ select2: "select" }),
-      selectorButton("3", selected).output({ select3: "select" }),
-      selectorButton("4", selected).output({ select4: "select" })
-    ])
-      .map((o) => ({
-        selectVersion: combine(o.select1, o.select2, o.select3, o.select4)
-      }))
-      .output({ selectVersion: "selectVersion" })
+    return div({ class: "btn-group" }, [
+      selectorButton("1", selected).output({ selectVersion: "selectVersion" }),
+      selectorButton("2", selected).output({ selectVersion: "selectVersion" }),
+      selectorButton("3", selected).output({ selectVersion: "selectVersion" }),
+      selectorButton("4", selected).output({ selectVersion: "selectVersion" })
+    ]).result({ selected });
+  })
 );
 
 const main = go(function*() {
-  const { selected } = yield versionSelector();
+  const { selected } = yield versionSelector.output({ selected: "selected" });
   const currentApp = selected.map((n: AppId) => numberToApp[n]);
   yield div(currentApp);
   return {};

examples/counters/src/version2.ts

@@ -1,41 +1,32 @@
 import { Behavior, accum, Stream, combine } from "@funkia/hareactive";
-import { elements, modelView, fgo } from "../../../src";
+import { elements, fgo, component } from "../../../src";
 const { div, button } = elements;
 
-type CounterModelInput = {
+type On = {
   incrementClick: Stream<any>;
   decrementClick: Stream<any>;
 };
 
-type CounterViewInput = {
-  count: Behavior<number>;
-};
-
-const counterModel = fgo(function*({
-  incrementClick,
-  decrementClick
-}: CounterModelInput) {
-  const increment = incrementClick.mapTo(1);
-  const decrement = decrementClick.mapTo(-1);
-  const changes = combine(increment, decrement);
-  const count = yield accum((n, m) => n + m, 0, changes);
-  return { count };
-});
-
-const counterView = ({ count }: CounterViewInput) =>
-  div([
-    "Counter ",
-    count,
-    " ",
-    button({ class: "btn btn-default" }, " + ").output({
-      incrementClick: "click"
-    }),
-    " ",
-    button({ class: "btn btn-default" }, " - ").output({
-      decrementClick: "click"
-    })
-  ]);
+const counter = component<On>(
+  fgo(function*({ incrementClick, decrementClick }) {
+    const increment = incrementClick.mapTo(1);
+    const decrement = decrementClick.mapTo(-1);
+    const changes = combine(increment, decrement);
+    const count = yield accum((n, m) => n + m, 0, changes);
 
-const counter = modelView(counterModel, counterView);
+    return div([
+      "Counter ",
+      count,
+      " ",
+      button({ class: "btn btn-default" }, " + ").output({
+        incrementClick: "click"
+      }),
+      " ",
+      button({ class: "btn btn-default" }, " - ").output({
+        decrementClick: "click"
+      })
+    ]);
+  })
+);
 
-export const main2 = counter();
+export const main2 = counter;

examples/counters/src/version3.ts

@@ -2,13 +2,12 @@ import {
   Behavior,
   combine,
   map,
-  Now,
   accum,
   scan,
   Stream
 } from "@funkia/hareactive";
 
-import { elements, fgo, list, ModelReturn, modelView } from "../../../src";
+import { elements, fgo, list, component } from "../../../src";
 const { br, div, button, h1, ul } = elements;
 
 const add = (n: number, m: number) => n + m;
@@ -19,76 +18,57 @@ type CounterModelInput = {
   decrementClick: Stream<any>;
 };
 
-type CounterViewInput = {
-  count: Behavior<number>;
-};
-
 type CounterOutput = {
   count: Behavior<number>;
 };
 
-const counterModel = fgo(function*({
-  incrementClick,
-  decrementClick
-}: CounterModelInput): ModelReturn<CounterViewInput> {
-  const increment = incrementClick.mapTo(1);
-  const decrement = decrementClick.mapTo(-1);
-  const count = yield accum(add, 0, combine(increment, decrement));
-  return { count };
-});
+const counter = () =>
+  component<CounterModelInput, CounterOutput>(
+    fgo(function*(on) {
+      const increment = on.incrementClick.mapTo(1);
+      const decrement = on.decrementClick.mapTo(-1);
+      const count = yield accum(add, 0, combine(increment, decrement));
 
-const counterView = ({ count }: CounterViewInput) =>
-  div([
-    "Counter ",
-    count,
-    " ",
-    button({ class: "btn btn-default" }, " + ").output({
-      incrementClick: "click"
-    }),
-    " ",
-    button({ class: "btn btn-default" }, " - ").output({
-      decrementClick: "click"
+      return div([
+        "Counter ",
+        count,
+        " ",
+        button({ class: "btn btn-default" }, " + ").output({
+          incrementClick: "click"
+        }),
+        " ",
+        button({ class: "btn btn-default" }, " - ").output({
+          decrementClick: "click"
+        })
+      ]).result({ count });
     })
-  ]);
-
-const counter = modelView(counterModel, counterView);
-
-type ViewInput = {
-  counterIds: Behavior<number[]>;
-  sum: Behavior<number>;
-};
+  );
 
-type ModelInput = {
+type ListOn = {
   addCounter: Stream<Event>;
-  listOut: Behavior<CounterOutput[]>;
 };
 
-const counterListModel = fgo(function*({
-  addCounter,
-  listOut
-}: ModelInput): Iterator<Now<any>> {
-  const nextId: Stream<number> = yield scan(add, 2, addCounter.mapTo(1));
-  const appendCounterFn = map(
-    (id) => (ids: number[]) => ids.concat([id]),
-    nextId
-  );
-  const counterIds = yield accum<(a: number[]) => number[], number[]>(
-    apply,
-    [0],
-    appendCounterFn
-  );
-  return { counterIds };
-});
-
-const counterListView = ({ sum, counterIds }: ViewInput) => [
-  h1("Counters"),
-  button({ class: "btn btn-primary" }, "Add counter").output({
-    addCounter: "click"
-  }),
-  br,
-  ul(list(counter, counterIds).output((o) => ({ listOut: o })))
-];
-
-const counterList = modelView(counterListModel, counterListView);
+const counterList = component<ListOn>(
+  fgo(function*({ addCounter }) {
+    const nextId: Stream<number> = yield scan(add, 2, addCounter.mapTo(1));
+    const appendCounterFn = map(
+      (id) => (ids: number[]) => ids.concat([id]),
+      nextId
+    );
+    const counterIds = yield accum<(a: number[]) => number[], number[]>(
+      apply,
+      [0],
+      appendCounterFn
+    );
+    return [
+      h1("Counters"),
+      button({ class: "btn btn-primary" }, "Add counter").output({
+        addCounter: "click"
+      }),
+      br,
+      ul(list(counter, counterIds))
+    ];
+  })
+);
 
-export const main3 = counterList();
+export const main3 = counterList;