Node.js utilities for watching file and directory trees with flexible filtering and event monitoring.
Watch is a Node.js module that provides utilities for watching file and directory trees, enabling developers to monitor file system changes programmatically. It solves the problem of tracking file modifications, creations, and deletions in a flexible and configurable way, with support for filtering and event-driven notifications.
Node.js developers who need to automate tasks based on file changes, such as running tests, rebuilding assets, or syncing files during development.
Developers choose Watch for its simplicity, built-in CLI tool, and extensive filtering options, which make it a versatile alternative to more complex file-watching solutions in the Node.js ecosystem.
Utilities for watching file trees in node.js
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Supports ignoring dot files, custom filter functions, regex patterns like /node_modules/, and skipping unreadable directories, allowing precise control over what gets watched.
Provides createMonitor for granular event handling (created, changed, removed), enabling developers to react specifically to file changes without manual polling.
Includes a command-line interface to automatically run shell commands on file changes, simplifying tasks like test execution or asset rebuilding in development.
Allows setting intervals between polling and wait times after command execution, helping reduce system overhead and prevent rapid, repeated triggers.
Relies on fs.watchFile with configurable intervals, which can be inefficient and slow for large file trees compared to event-driven native APIs, leading to higher CPU usage.
The command syntax requires careful quoting and escaping on Windows, as noted in the README examples, which can be error-prone and cumbersome for users.
The README covers essentials but lacks in-depth guides, advanced use cases, or troubleshooting tips, leaving users to figure out complex scenarios on their own.