feature: vor und nachteile

praesentation/node_modules/alien-signals/cjs/unstable/computedArray.d.ts

@@ -0,0 +1,2 @@
+import { ISignal } from '../index.js';
+export declare function computedArray<I, O>(arr: ISignal<I[]>, getGetter: (item: ISignal<I>, index: number) => () => O): readonly Readonly<O>[];

praesentation/node_modules/alien-signals/cjs/unstable/computedArray.js

@@ -0,0 +1,43 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.computedArray = computedArray;
+const index_js_1 = require("../index.js");
+function computedArray(arr, getGetter) {
+    const length = (0, index_js_1.computed)(() => arr.get().length);
+    const keys = (0, index_js_1.computed)(() => {
+        const keys = [];
+        for (let i = 0; i < length.get(); i++) {
+            keys.push(String(i));
+        }
+        return keys;
+    });
+    const items = (0, index_js_1.computed)((array) => {
+        array ??= [];
+        while (array.length < length.get()) {
+            const index = array.length;
+            const item = (0, index_js_1.computed)(() => arr.get()[index]);
+            array.push((0, index_js_1.computed)(getGetter(item, index)));
+        }
+        if (array.length > length.get()) {
+            array.length = length.get();
+        }
+        return array;
+    });
+    return new Proxy({}, {
+        get(_, p, receiver) {
+            if (p === 'length') {
+                return length.get();
+            }
+            if (typeof p === 'string' && !isNaN(Number(p))) {
+                return items.get()[Number(p)]?.get();
+            }
+            return Reflect.get(items.get(), p, receiver);
+        },
+        has(_, p) {
+            return Reflect.has(items.get(), p);
+        },
+        ownKeys() {
+            return keys.get();
+        },
+    });
+}

praesentation/node_modules/alien-signals/cjs/unstable/computedSet.d.ts

@@ -0,0 +1,2 @@
+import { ISignal } from '../index.js';
+export declare function computedSet<T>(source: ISignal<Set<T>>): ISignal<Set<T>>;

praesentation/node_modules/alien-signals/cjs/unstable/computedSet.js

@@ -0,0 +1,13 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.computedSet = computedSet;
+const index_js_1 = require("../index.js");
+function computedSet(source) {
+    return (0, index_js_1.computed)((oldValue) => {
+        const newValue = source.get();
+        if (oldValue?.size === newValue.size && [...oldValue].every(c => newValue.has(c))) {
+            return oldValue;
+        }
+        return newValue;
+    });
+}

praesentation/node_modules/alien-signals/cjs/unstable/equalityComputed.d.ts

@@ -0,0 +1,6 @@
+import { Computed, ISignal } from '../index.js';
+export declare function equalityComputed<T>(getter: () => T): ISignal<T>;
+export declare class EqualityComputed<T = any> extends Computed<T> {
+    constructor(getter: () => T);
+    equals(a: any, b: any): boolean;
+}

praesentation/node_modules/alien-signals/cjs/unstable/equalityComputed.js

@@ -0,0 +1,58 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.EqualityComputed = void 0;
+exports.equalityComputed = equalityComputed;
+const index_js_1 = require("../index.js");
+function equalityComputed(getter) {
+    return new EqualityComputed(getter);
+}
+class EqualityComputed extends index_js_1.Computed {
+    constructor(getter) {
+        super(oldValue => {
+            const newValue = getter();
+            if (this.equals(oldValue, newValue)) {
+                return oldValue;
+            }
+            return newValue;
+        });
+    }
+    equals(a, b) {
+        if (a === b) {
+            return true;
+        }
+        if (a === null || b === null || typeof a !== typeof b) {
+            return false;
+        }
+        if (typeof a === 'object') {
+            if (Array.isArray(a) && Array.isArray(b)) {
+                if (a.length !== b.length) {
+                    return false;
+                }
+                for (let i = 0; i < a.length; i++) {
+                    if (!this.equals(a[i], b[i])) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+            if (!Array.isArray(a) && !Array.isArray(b)) {
+                for (const key in a) {
+                    if (a.hasOwnProperty(key)) {
+                        if (!b.hasOwnProperty(key) || !this.equals(a[key], b[key])) {
+                            return false;
+                        }
+                    }
+                }
+                for (const key in b) {
+                    if (b.hasOwnProperty(key) && !a.hasOwnProperty(key)) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+            return false; // One is array and the other is not
+        }
+        return false;
+    }
+}
+exports.EqualityComputed = EqualityComputed;

praesentation/node_modules/alien-signals/cjs/unstable/index.d.ts

@@ -0,0 +1,3 @@
+export * from './computedArray.js';
+export * from './computedSet.js';
+export * from './equalityComputed.js';

praesentation/node_modules/alien-signals/cjs/unstable/index.js

@@ -0,0 +1,19 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __exportStar = (this && this.__exportStar) || function(m, exports) {
+    for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+__exportStar(require("./computedArray.js"), exports);
+__exportStar(require("./computedSet.js"), exports);
+__exportStar(require("./equalityComputed.js"), exports);