TS Watch 配置

TypeScript

--watch 参数基于 fs.watch（目录）和 fs.watchFile（文件）实现了编译器

{
    "compilerOptions": {
        "target": "es2020",
        "moduleResolution": "node"
        // ...
    },
    // options for file/directory watching
    "watchOptions": {
        "watchFile": "useFsEvents",
        "watchDirectory": "useFsEvents",
        // poll files for updates more frequently
        // when they're updated a lot
        "fallbackPolling": "dynamicPriority",
        // don't coalesce watch notification
        "synchronousWatchDirectory": true,
        "excludeDirectories": ["**/node_modules", "_build"],
        "excludeFiles": ["build/fileWhichChangesOften.ts"]
    }
}