refactor: v2.0 全量重构 — TypeScript + React + Zustand + IndexedDB
技术栈升级: - JavaScript → TypeScript 5.6(全量类型安全) - 原生 DOM → React 18(函数组件 + Hooks) - 全局变量 → Zustand 5(轻量状态管理) - localStorage → IndexedDB / Dexie.js 4(大容量、异步、索引) - marked.js → unified / remark / rehype(插件化渲染管线) - 无打包 → electron-vite 3(HMR 热更新) - 纯 CSS → CSS Variables + CSS Modules 新增功能: - 标签页状态 IndexedDB 持久化(关闭后可恢复) - 最近打开文件列表 - 大文件虚拟化行号(>2000 行) - 搜索高亮二分查找优化 O(log N) - rehype-sanitize HTML 安全过滤 文件结构: - 7 个源文件 → 51 个模块化文件 - src/main/ 主进程(6 文件) - src/preload/ 预加载(1 文件) - src/renderer/ 渲染进程(42 文件:组件/hooks/stores/lib/db/types/styles) - src/shared/ 共享类型(2 文件) 构建验证: - TypeScript 检查零错误 - electron-vite build 成功 - 产物:main 15kB + preload 2kB + renderer 1.5MB
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import Dexie, { type EntityTable } from 'dexie'
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export interface TabSnapshot {
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id: string
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filePath: string | null
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content: string
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scrollTop: number
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scrollLeft: number
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selectionStart: number
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selectionEnd: number
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previewScrollTop: number
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isModified: boolean
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updatedAt: number
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}
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export interface SettingsRecord {
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id: string // 固定为 'default'
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darkMode: boolean
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viewMode: 'split' | 'editor' | 'preview'
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splitRatio: number
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sidebarCollapsed: boolean
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sidebarWidth: number
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}
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export interface RecentFile {
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id?: number
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filePath: string
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lastOpened: number
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}
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const db = new Dexie('MarkLite') as Dexie & {
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tabSnapshots: EntityTable<TabSnapshot, 'id'>
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settings: EntityTable<SettingsRecord, 'id'>
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recentFiles: EntityTable<RecentFile, 'id'>
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}
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db.version(1).stores({
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tabSnapshots: 'id, filePath, updatedAt',
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settings: 'id',
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recentFiles: '++id, filePath, lastOpened'
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})
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export { db }
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