Install a registry dependency into one specific workspace with the npm --workspace flag
domain: docs.npmjs.com · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
At the monorepo root run npm install <pkg> -w <workspace-name> to add <pkg> to that single workspace's dependencies
Use -w <name> repeatedly to install into multiple workspaces: npm install <pkg> -w a -w b
Use -D to save as a devDependency, -E for exact version, matching normal npm install flags
Verify the dependency landed in the right workspace with npm ls -w <workspace-name>
For devDependencies unique to one workspace, -w scopes them correctly and keeps the root tree minimal
Known gotchas
Without -w the package installs at the root project, not any workspace
node_modules for workspaces is hoisted to the root by default (install-strategy=hoisted); direct deps may still appear nested where version conflicts occur
Use --workspaces (plural) to operate on all workspaces instead of one
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