7 questions for “Modules (CommonJS/ESM)”

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7 questions in 1 technology

#	Question	Technology	Topic	Level
1	What is the difference between require() (CommonJS) and import (ES Modules) when loading Node.js's own core modules? Node.js › Core Node.js Modules	Node.js	Core Node.js Modules	Beginner
2	What is the node: prefix for core module imports, and why was it introduced? Node.js › Core Node.js Modules	Node.js	Core Node.js Modules	Beginner
3	What is the difference between __dirname/__filename in CommonJS and their equivalents in ES Modules? Node.js › Global Objects & the process Object	Node.js	Global Objects & the process Object	Intermediate
4	What is a shebang line, and why does it need to be the first line of an executable Node.js CLI script? Node.js › CLI Tools & Scripting with Node.js	Node.js	CLI Tools & Scripting with Node.js	Beginner
5	What is the Module pattern in Node.js, and how does it enable encapsulation? Node.js › Architecture & Design Patterns	Node.js	Architecture & Design Patterns	Intermediate
6	What is the Singleton pattern, and what are the specific risks of using it in a Node.js application? Node.js › Architecture & Design Patterns	Node.js	Architecture & Design Patterns	Intermediate
7	How would you parse command-line arguments and flags in a Node.js CLI tool using a library like commander or yargs? Node.js › CLI Tools & Scripting with Node.js	Node.js	CLI Tools & Scripting with Node.js	Intermediate