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Adaptive skill practice — find your level, get sharper.

Package Management practice

npm, yarn, and pnpm — dependencies done right
JavaScript package management the way the official docs describe it — how npm, yarn, and pnpm resolve, install, and lock dependencies; semantic versioning and version ranges (^, ~, and exact pins); the lockfile and why committing it matters; dependencies vs devDependencies vs peerDependencies; the scripts lifecycle and running them; workspaces and monorepos; the node_modules resolution model and pnpm’s content-addressable store; and publishing and supply-chain security (audit, provenance, lockfile integrity). Concept-first and evergreen, with a teaching explanation after every answer. Part of the Developer track.
• Meets you at your level — never too easy, never too hard.
• Adapts every question to how you’re doing.
• Tracks your level over time. Skill practice, not a test.
New here? Read the Package Management guide
A free 16-minute primer — the mental model, the mistakes beginners make, and what to practise first.
Curriculum
137 concepts across 22 chapters, from foundations through advanced practice — each one a concept the adaptive question bank can teach and test.
A. Packages, registries and what a package manager does
7
B. package.json: identity and metadata
7
C. Dependency kinds and who installs what
7
D. Semantic versioning: what a number promises
6
E. Ranges and how a resolver picks a version
7
F. Lockfiles
6
G. Installing: npm install versus npm ci, cache and offline
6
H. node_modules, the resolution algorithm and hoisting
7
I. Peer dependencies and peer conflicts
5
J. Overrides, dedupe and aliases
5
K. Scripts and lifecycle hooks
7
L. bin, npx and executables
4
M. Workspaces and monorepos
6
N. npm, pnpm, Yarn and Corepack
6
O. Publishing
7
P. The exports field and dual packaging
7
Q. CommonJS, ESM and interop failure modes
6
R. Audit and vulnerability handling
6
S. Supply-chain security
6
T. Bundling: what a bundler does and which tool does it
5
U. Tree shaking, code splitting and source maps
7
V. Transpilers, targets and Node versions
7
View the full curriculum →
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