mute8/dist/mute8.cjs.map

JS State Container

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defaultPlugin()\n        this.s = freeze(this.p.BI(state))\n    }\n\n    destroy() {\n        this.ps?.destroy()\n        this.ps = null\n    }\n\n    sanp(): Readonly<T> {\n        return this.s\n    }\n\n    sub(fn: SubFn<T>): Sub {\n        const id = this.id++\n        this.c[id] = fn\n        return {\n            destroy: () => delete this.c[id]\n        }\n    }\n\n    mut(update: Partial<T>, actionName?: string, args?: CallArgs): void {\n        // for Observer always full update\n        let newFinal: T = update as T;\n        if (!this.ps) {\n            newFinal = this.p.BU(assign(deepClone(this.s), update))\n        }\n\n        if (toJson(this.s) !== toJson(newFinal)) {\n            this.p.AC(this.s, newFinal, actionName, args)\n            this.s = freeze(newFinal)\n            // notify subscribers\n            O.keys(this.c).forEach(id => this.c[id](this.s))\n        }\n    }\n\n    set<K extends keyof T>(key: K & string | typeof MUT_FN_NAME, value: T[K] | Partial<T>): void {\n        const actionName = \"set.\" + key;\n        const v = (key === MUT_FN_NAME ? value : { [key]: value }) as Partial<T>;\n        this.mut(v, actionName, [value])\n    }\n\n    select<O>(fn: SelectFn<T, O>): Observer<O> {\n        const observer = new Subject(fn(this.sanp()))\n        observer.ps = this.sub((v) => observer.mut(fn(v)))\n        return observer;\n    }\n}\n\ninterface Observer<T> {\n    sub(fn: SubFn<T>): Sub\n    select<O>(fn: SelectFn<T, O>): Observer<O>\n    sanp(): Readonly<T>\n    destroy(): void\n}\n\nclass StoreCore<T extends object, A, AA> {\n    private readonly p: StoreProxy<T, A, AA>;\n    readonly s: Subject<T>\n\n    constructor(d: StoreDefiniton<T, A, AA>) {\n        this.s = new Subject(d.value)\n        const asyncProxy = buildActionProxy(d.async ?? {} as AA, (_, fn) => {\n            return async (...args: any[]) => await fn.bind(this.p)(...args)\n        })\n        const actionsProxy = buildActionProxy(d.actions ?? {} as A, (name, fn) => {\n            return (...args: any[]) => this.mut(v => fn.bind(v)(...args), name, args)\n        })\n        // init proxy\n        const core = this;\n        this.p = {\n            snap: () => core.s.sanp(),\n            sub: (v) => core.s.sub(v),\n            select: (f) => core.s.select(f),\n            actions: actionsProxy,\n            async: asyncProxy,\n            /** @ts-ignore */\n            set mut(v: Partial<T>) { core.s.set(MUT_FN_NAME, v) },\n            /** @ts-ignore */\n            get mut() { return core.mut.bind(core) }\n        }\n\n        // init plugin\n        const p = d.plugin?.(this.p) ?? defaultPlugin()\n        this.s = new Subject(d.value, p)\n    }\n\n    private mut(fn: (v: T) => void, actionName?: string, args?: any[]): void {\n        const state = deepClone(this.s.sanp())\n        fn(state)\n        this.s.mut(state, actionName, args ?? fn)\n    }\n\n    static build<T extends object, A, AA>(\n        state: StoreDefiniton<T, A, AA>,\n        ext?: ProxyExtension<T, A, AA>\n    ): Store<T, A, AA> {\n        const core = new StoreCore(state)\n        const extension = !ext ? {} : { [ext.name]: ext.init(core as StoreCore<any, any, any>) } as {}\n        const bigProxy = assign(extension, core.p)\n\n        // build store representation (proxy)\n        const store = {}\n        for (const [key, _] of entries(state.value)) {\n            defineProperty(store, key, {\n                get() { return core.s.sanp()[key] },\n                set(v) { core.s.set(key as any, v) }\n            })\n        }\n        defineProperty(store, MUT_FN_NAME, {\n            get() { return core.mut.bind(core) },\n            set(v) { core.s.set(MUT_FN_NAME, v) }\n        })\n        return freeze(assign(store, bigProxy)) as Store<T, A, AA>\n    }\n\n}\n\nconst buildActionProxy = <T>(actions: T, proxy: (fnName: string, fn: Function) => Function): T => {\n    const aProxy: Record<string, Function> = {}\n    entries(actions as object).forEach(([name, fn]) => aProxy[name] = proxy(name, fn))\n    return freeze(aProxy) as T\n}\n\n// Proxy\ninterface SmalProxy<T, A> {\n    snap(): T\n    set mut(v: Partial<T>)\n    get mut(): (fn: (v: T) => void, actionName?: string) => void\n    actions: Readonly<A>\n}\nexport interface StoreProxy<T, A, AA> extends SmalProxy<T, A> {\n    sub(fn: SubFn<T>): Sub\n    select<O>(fn: (value: Readonly<T>) => O): Observer<O>\n    async: Readonly<AA>\n}\nexport interface ProxyExtension<T extends object, A, AA> {\n    name: string,\n    init(core: StoreCore<T, A, AA>): object\n}\n\n// Use Only for internal ProxyExtension\nexport const buildProxy = StoreCore.build;\ntype ExcludeKeys = { async?: never, actions?: never, snap?: never, sub?: never, mut?: never }\n// Public\nexport type PluginBuilder = (<T extends object>(proxy: StoreProxy<T, any, any>) => Plugin<T>) | null\nexport type Store<T, A, AA> = StoreProxy<T, A, AA> & T\nexport type SubFn<T> = (value: Readonly<T>) => void\nexport type SelectFn<T, O> = (value: Readonly<T>) => O\nexport type Sub = { destroy(): void }\n\nexport type VoidFn = ((...args: any) => undefined)\nexport type AsyncFn = ((...args: any) => Promise<void>);\nexport interface StoreDefiniton<T extends object, A, AA> {\n    value: T & object & ExcludeKeys\n    actions?: A & ThisType<T> & Record<string, VoidFn>\n    async?: AA & ThisType<SmalProxy<T, A>> & Record<string, AsyncFn>\n    plugin?: PluginBuilder\n}\nexport const newStore = <T extends object, A, AA>(state: StoreDefiniton<T, A, AA>) => {\n    return buildProxy(state) as Store<T, A, AA>\n}\n"]}