npm exec: Run Package Binaries

npm exec runs a binary provided by a package without a global install.

npm exec is the modern form of npx for running CLIs that live in your dependencies or fetching one on demand.

Common usage

• npm exec -- <cmd> [args] - run a local bin
• npm exec --yes -- <pkg> - auto-fetch if missing
• --call - run an inline command

Example in CI

Run a project-local tool deterministically.

npm exec -- tsc --noEmit

In CI

Prefer running tools from devDependencies (installed via npm ci) so versions are pinned, rather than fetching at runtime.

Key takeaways

• npm exec runs package binaries.
• Prefer pinned local tools in CI.
• --yes auto-installs a missing package.

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