What is preferred way to deal with peerDependencies

[justsaul]

Hey folks,

I was wondering what is preferred way to deal with workspaces that rely on peerDependencies.

Say we have a project - app and package - package. Both are expressed as a workspaces and app depends on package package for a particular functionality. Now say package has react peerDependency (which is expected to be provided by an app). Now conventional way in order to "build" and "test" package is to declare devDependencies identical to peerDependencies.

Now the problem arises that after linking step, within app we literally get symlink to package with all its node_modules. (similar problem happens with PnP linker as opposed to node-modules where we would get package referencing devDependency - in this case react).

Module bundlers allow us to exclude such peerDependencies that happened to became devDependencies out of necessity, however, since package still contains all node_modules at runtime react dependency will will be taken from package node_modules even though, it's just a devDependency and if app happened to have different version of react then it will not work properly in local env.

More Context

package can be deployable, so say if there is app2, it could depend on package version from an artifactory but app would still depend on local version of package.

Ideal case

Ideally app would have symlink to package build dir only or to artefact that we get whilst packing package. However, i have to support app2 that has dependency on package from artifactory.

[justsaul]

For the future people that may or may not stumble upon this discussion - try to move to PnP mode, my initial assumptions have been incorrect, yarn already knows how to resolve your dependencies correctly and you shouldn't run into cases like mentioned above.

[akwodkiewicz]

I was going to ask the exact same question, and this was the first post I saw in the "Discussions" tab. Thank you for this.

Does this mean that PnP "automatically" resolves this problem? How to migrate from node_modules linker to PnP if I already use Yarn 3?