Node.js: Core modules

Core modules come with installation of node.js software.

At the time of writing this post, below are the core modules provided by node.js framework.

Module	Description
assert	Provides a simple set of assertion tests that can be used to test invariants.
async_hook	Provides an API to register callbacks tracking the lifetime of asynchronous resources created inside a Node.js application.
buffer	It enables interaction with octet streams in TCP streams, file system operations, and other contexts.
child_process	Provides the ability to spawn child processes
cluster	It allows easy creation of child processes that all share server ports.
console	Provides a simple debugging console that is similar to the JavaScript console mechanism provided by web browsers.
crypto	Provides cryptographic functionality that includes a set of wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions.
dns	Functions that connect to an actual DNS server.
events	Support for events
fs	Provides an API for interacting with the file system in a manner closely modeled around standard POSIX functions.
http	Provide APIs to use HTTP server and client
http2	Provides an implementation of the HTTP/2 protocol.
https	Provide support for https protocol.
inspector	Provides an API for interacting with the V8 inspector.
net	Provides an asynchronous network API for creating stream-based TCP or IPC servers and clients
os	provides a number of operating system-related utility methods.
path	Provides utilities for working with file and directory paths.
perf_hooks	Provides an implementation of the W3C Performance Timeline specification.
process	Provides information about, and control over, the current Node.js process.
querystring	Provides utilities for parsing and formatting URL query strings.
readline	Provides an interface for reading data from a Readable stream one line at a time.
repl	Provides a Read-Eval-Print-Loop (REPL) implementation that is available both as a standalone program or includible in other applications.
stream	Provide APIS to work with streaming data
string_decoder	provides an API for decoding Buffer objects into strings in a manner that preserves encoded multi-byte UTF-8 and UTF-16 characters
timers	Module exposes a global API for scheduling functions to be called at some future period of time.
tls	Module provides an implementation of the Transport Layer Security (TLS) and Secure Socket Layer (SSL) protocols that is built on top of OpenSSL.
trace_events	Provides a mechanism to centralize tracing information generated by V8, Node.js core, and userspace code.
tty	Module provides the tty.ReadStream and tty.WriteStream classes.
dgram	Provides an implementation of UDP Datagram sockets.
url	Provides utilities for URL resolution and parsing.
util	Designed to support the needs of Node.js' own internal APIs.
v8	Exposes APIs that are specific to the version of V8 built into the Node.js binary.
vm	Provides APIs for compiling and running code within V8 Virtual Machine contexts.
worker_threads	provides a way to create multiple environments running on independent threads, and to create message channels between them.
zlib	Provides compression functionality implemented using Gzip and Deflate/Inflate.

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