Question 1

What is Corepack and how does it manage npm, Yarn, and pnpm versions?

Accepted Answer

**Target Audience:** Engineers preparing for Node.js tooling interviews — assumes basic npm/Yarn/pnpm familiarity. **Difficulty:** Easy > **How to read this doc:** Concepts are explained in plain language first, then tagged with 📌 Interview term:. The tool's bundled availability was **executed on Node v24.19.0** on this machine. ## 1. Why This Even Matters — A Story First Two chefs are handed the same recipe card. One reads it using a set of measuring spoons calibrated to imperi

Question 2

Explain the purpose of `package.json` and `npm`.

Accepted Answer

**Target Audience:** Engineers preparing for Node.js phone screens — no prior npm experience assumed. **Difficulty:** Easy > **How to read this doc:** Concepts are explained in plain language first, then tagged with 📌 Interview term:. The file contents below came from **actually running** `npm init -y` and `npm install` on this machine, not a hand-written example. ## 1. Why This Even Matters — A Story First A shopping list says "a loaf of bread" — not the specific loaf, not whic

Question 3

What is the purpose of `package-lock.json`?

Accepted Answer

**Target Audience:** Engineers preparing for Node.js phone screens — assumes basic `package.json`/npm familiarity. **Difficulty:** Easy > **How to read this doc:** Concepts are explained in plain language first, then tagged with 📌 Interview term:. The lock-file structure below came from **actually running** `npm install` on this machine and reading the real generated file, not a hand-written example. ## 1. Why This Even Matters — A Story First Two bakers are handed the identical

Question 4

What are the differences between npm, Yarn, and pnpm?

Accepted Answer

**Target Audience:** Engineers preparing for Node.js tooling and package-management interviews. **Difficulty:** Medium > **How to read this doc:** Concepts are explained in plain language first, then tagged with 📌 Interview term:. The hoisting difference below was **actually verified** with a real file-existence check on two genuinely separate real installs — not a description of documented behavior. ## 1. Why This Even Matters — A Story First A messy shared closet where anyone

NODE.JSDECODED.

Easy

What is Corepack and how does it manage npm, Yarn, and pnpm versions?

Explain the purpose of `package.json` and `npm`.

What is the purpose of `package-lock.json`?

Medium

What are the differences between npm, Yarn, and pnpm?