Is pnpm really faster than npm?

Yes, 2-3x faster for installs. pnpm links packages from a global store instead of copying. Subsequent installs are even faster as packages are already in the store. The difference is most noticeable in CI/CD.

What are phantom dependencies?

Phantom deps are packages your code uses but does not declare in package.json — they happen to exist because a dependency installed them. npm allows this; pnpm blocks it with strict node_modules. This catches bugs before production.

Should I switch from npm to pnpm?

For new projects, yes — faster, stricter, less disk space. For existing projects, the switch is straightforward: delete node_modules and package-lock.json, run pnpm install. Some packages may need adjustments for pnpm's strict mode.

Last updated: April 12, 2026

pnpm vs npm — Which Package Manager in 2026?

Quick Answer

pnpm uses a content-addressable store with hard links — saving up to 60% disk space and installing 2-3x faster than npm. npm is the default Node.js package manager with the broadest compatibility. pnpm is technically superior; npm has the widest adoption.

pnpm vs npm — Side by Side

Feature	pnpm	npm
Install Speed	2-3x faster (content-addressable store)	Slower (copies each package)
Disk Usage	Saves ~60% (hard links to store)	Full copy in each project
Strictness	Strict — only declared deps accessible	Loose — phantom deps possible
Monorepo	Built-in workspaces with filtering	npm workspaces (basic)
Lock File	pnpm-lock.yaml	package-lock.json
Compatibility	Good — occasional issues with some packages	Universal — default for Node.js
Corepack	Supported via corepack enable	Bundled with Node.js

Verdict

Choose pnpm for faster installs, disk savings, and strict dependency management (prevents phantom deps). Choose npm when compatibility is paramount or for simple projects where the speed difference does not matter.

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