Pnpm install appears: err_ PNPM_ PEER_ DEP_ ISSUES Unmet peer dependencies

Use pnpm install Appears when installing project dependencies ：ERR_PNPM_PEER_DEP_ISSUES Unmet peer dependencies, stay pnpm github issues Find relevant solutions in .

One 、 Preface

1. Full log

   ERR_PNPM_PEER_DEP_ISSUES Unmet peer dependencies

   .
   └─┬ koa-views
   └─┬ consolidate
   └── ? unmet peer [email protected]^16.13.1: found 18.1.0

   hint: If you don’t want pnpm to fail on peer dependency issues, set the “strict-peer-dependencies” setting to “false”.

2. Question why ： stay npm 3 in , No more forced installation peerDependencies （ Peer to peer dependency ） The package specified in , It's a way of warning us .pnpm The downloaded dependent packages will be cached in the global cache , If the global cache depends on the version and project package.json The version specified in is inconsistent , This is what happens hint Warning .

3. pnpm Answers given by team members ：

There are two types of peer deps: optional peer dependencies and non-optional ones. The warnings are only printed for non-optional peer dependencies. If a package works without the peer dependencies, then it should be declared as optional peer dependency. Optional peer dependencies are supported by npm/yarn/pnpm for a long time.

Two 、 Treatment scheme

1. In the project package.json Middle configuration peerDependencyRules Ignore the corresponding warning prompt ：

   {
   “pnpm”: {
   “peerDependencyRules”: {
   “ignoreMissing”: [
   “react”
   ]
   }
   }
   }

2. stay .npmrc Add... To the configuration file strict-peer-dependencies=false , This means that strict peer dependency mode will be turned off . The operation command is as follows ：

   npm config set strict-peer-dependencies=false

Reference link ：

• https://github.com/pnpm/pnpm/issues/4684

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