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The events module provides an EventEmitter for event handling.
The write() method writes data to a writable stream.
The os module provides operating system-related utility methods.
fs.appendFile() appends data to a file in Node.js.
process.memoryUsage() returns memory usage statistics.
The https module handles secure HTTP connections.
The util module provides utility functions like promisify.
fs.exists() checks if a file exists asynchronously.
The child_process module handles spawning child processes.
The path module provides utilities for handling file paths.