{"id":31217017,"url":"https://github.com/tearlighting/react-provider-factory-pattern","last_synced_at":"2026-02-16T14:31:54.315Z","repository":{"id":315517325,"uuid":"1059832342","full_name":"tearlighting/react-provider-factory-pattern","owner":"tearlighting","description":null,"archived":false,"fork":false,"pushed_at":"2025-09-19T02:38:04.000Z","size":3,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":0,"default_branch":"main","last_synced_at":"2025-09-19T04:27:21.099Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/tearlighting.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2025-09-19T02:36:25.000Z","updated_at":"2025-09-19T02:38:08.000Z","dependencies_parsed_at":"2025-09-19T04:27:23.238Z","dependency_job_id":"c8138b2e-00c7-4886-8b4e-7b07bfe8d7f2","html_url":"https://github.com/tearlighting/react-provider-factory-pattern","commit_stats":null,"previous_names":["tearlighting/react-provider-factory-pattern"],"tags_count":null,"template":false,"template_full_name":null,"purl":"pkg:github/tearlighting/react-provider-factory-pattern","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tearlighting%2Freact-provider-factory-pattern","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tearlighting%2Freact-provider-factory-pattern/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tearlighting%2Freact-provider-factory-pattern/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tearlighting%2Freact-provider-factory-pattern/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/tearlighting","download_url":"https://codeload.github.com/tearlighting/react-provider-factory-pattern/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/tearlighting%2Freact-provider-factory-pattern/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29510157,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-16T09:05:14.864Z","status":"ssl_error","status_checked_at":"2026-02-16T08:55:59.364Z","response_time":115,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-09-21T13:51:41.584Z","updated_at":"2026-02-16T14:31:54.310Z","avatar_url":"https://github.com/tearlighting.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# react-provider-factory-pattern\n\n🧪 Experimental pattern for React state management:  \n**Factory (closure) + Provider + useSyncExternalStore = Polymorphic Store with fine-grained updates**\n\n---\n\n## Motivation\n\n- React Context 默认全量 re-render，不适合大表单/大列表场景。  \n- Zustand/Jotai 这类库解决了一部分，但抽象层次固定。  \n- 我想尝试：**把 store 本身抽象为工厂**，然后用 Provider 注入，这样可以：  \n  - 支持多个 store 实例（多态）  \n  - 用 `useSyncExternalStore` 保证 selector 精细化更新  \n  - store 内部实现可以自由切换（闭包 / reactive-core / 其他）\n\n---\n\n## Example\n\n```tsx\nimport React, { createContext, useContext, useRef } from \"react\"\nimport { useSyncExternalStore } from \"react\"\n\n// ---- Store Factory ----\nfunction createCounterStore() {\n  let state = { count: 0 }\n  const listeners = new Set\u003c() =\u003e void\u003e()\n\n  const getState = () =\u003e state\n  const setState = (partial: Partial\u003ctypeof state\u003e) =\u003e {\n    state = { ...state, ...partial }\n    listeners.forEach(l =\u003e l())\n  }\n  const subscribe = (listener: () =\u003e void) =\u003e {\n    listeners.add(listener)\n    return () =\u003e listeners.delete(listener)\n  }\n\n  return { getState, setState, subscribe }\n}\n\n// ---- Hook creator (selector support) ----\nfunction createUseStore\u003cT\u003e(store: ReturnType\u003ctypeof createCounterStore\u003e) {\n  return function useStore\u003cSelected\u003e(selector: (s: T) =\u003e Selected): Selected {\n    return useSyncExternalStore(\n      store.subscribe,\n      () =\u003e selector(store.getState()) // only re-render if selector result changes\n    )\n  }\n}\n\n// ---- Provider Pattern ----\nconst CounterContext = createContext\u003cReturnType\u003ctypeof createCounterStore\u003e | null\u003e(null)\n\nexport function CounterProvider({ children }: { children: React.ReactNode }) {\n  const storeRef = useRef(createCounterStore())\n  return \u003cCounterContext.Provider value={storeRef.current}\u003e{children}\u003c/CounterContext.Provider\u003e\n}\n\nexport function useCounter\u003cSelected\u003e(selector: (s: { count: number }) =\u003e Selected): Selected {\n  const store = useContext(CounterContext)!\n  return createUseStore(store)(selector)\n}\n\n// ---- Usage ----\nfunction Display() {\n  const count = useCounter(s =\u003e s.count)\n  return \u003cdiv\u003eCount: {count}\u003c/div\u003e\n}\n\nfunction Controls() {\n  const store = useContext(CounterContext)!\n  return (\n    \u003cbutton onClick={() =\u003e store.setState({ count: store.getState().count + 1 })}\u003e\n      Increment\n    \u003c/button\u003e\n  )\n}\n\nexport default function App() {\n  return (\n    \u003cCounterProvider\u003e\n      \u003cDisplay /\u003e\n      \u003cControls /\u003e\n    \u003c/CounterProvider\u003e\n  )\n}\n```\n## Key Points\n\ncreateCounterStore → 工厂函数，返回闭包 store。\n\nuseSyncExternalStore → 保证 selector 精细化更新。\n\nProvider → 注入多态 store 实例，不同 Provider = 不同 store。\n\nuseCounter(selector) → 组件只关心自己订阅的片段。\n## TODO\n\nMore demos (forms, nested providers).\n\nBenchmark vs Zustand/Jotai.\n\nTry swapping the factory core (e.g. Vue's reactive) inside.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ftearlighting%2Freact-provider-factory-pattern","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ftearlighting%2Freact-provider-factory-pattern","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ftearlighting%2Freact-provider-factory-pattern/lists"}