Node.js · Theory

NPM

← All stacks

Theory

7/723

NPM

Amit only reaches for NPM when install express has to stay correct in a new folder.

Keep NPM small. Amit should finish install express in a few lines, not a 40-line dump.

Without NPM, a new folder gets messy and install express is hard to trust.

NPM shows up in a new folder. Name install express, not “a real-world scenario”.

NPM miss — deleting package-lock blindly. Fix it before you talk about advanced Node.js.

Place NPM next to nearby Node.js work — npm init + npm i express is the link.

One breath for NPM, then install express, then deleting package-lock blindly. Sit down.

Exam tip

Say NPM in one breath, then npm init + npm i express, then deleting package-lock blindly.

Example

const pkg = {
  name: "demo",
  version: "1.0.0",
  scripts: { start: "node index.js" },
  dependencies: { express: "^4.19.0" },
};
console.log(pkg.name, Object.keys(pkg.dependencies));

NPM — package.json declares scripts and dependencies that npm installs.

Short notes

DefNPM — Amit uses it for install express in a new folder.
RuleNPM → npm init + npm i express.
RememberNPM + the event loop (a new folder).
UseNPM in a new folder (install express).
TrapNPM — deleting package-lock blindly.
ExNPM → install express.

Node.js · Theory

NPM

← All stacks

Theory

7/723

NPM

Amit only reaches for NPM when install express has to stay correct in a new folder.

Keep NPM small. Amit should finish install express in a few lines, not a 40-line dump.

Without NPM, a new folder gets messy and install express is hard to trust.

NPM shows up in a new folder. Name install express, not “a real-world scenario”.

NPM miss — deleting package-lock blindly. Fix it before you talk about advanced Node.js.

Place NPM next to nearby Node.js work — npm init + npm i express is the link.

One breath for NPM, then install express, then deleting package-lock blindly. Sit down.

Exam tip

Say NPM in one breath, then npm init + npm i express, then deleting package-lock blindly.

Example

const pkg = {
  name: "demo",
  version: "1.0.0",
  scripts: { start: "node index.js" },
  dependencies: { express: "^4.19.0" },
};
console.log(pkg.name, Object.keys(pkg.dependencies));

NPM — package.json declares scripts and dependencies that npm installs.

Short notes

DefNPM — Amit uses it for install express in a new folder.
RuleNPM → npm init + npm i express.
RememberNPM + the event loop (a new folder).
UseNPM in a new folder (install express).
TrapNPM — deleting package-lock blindly.
ExNPM → install express.

NPM

Example

Short notes

Questions

NPM

Example

Short notes

Questions