How to install npm peer dependencies automatically?
The automatic install of peer dependencies was explicitly removed with npm 3, as it cause more problems than it tried to solve. You can read about it here for example:
- https://blog.npmjs.org/post/110924823920/npm-weekly-5
- https://github.com/npm/npm/releases/tag/v3.0.0
So no, for the reasons given, you cannot install them automatically with npm 3 upwards.
NPM V7
NPM v7 has reintroduced the automatic peerDependencies installation. They had made some changes to fix old problems as version compatibility across multiple dependants. You can see the discussion here and the announcement here
Now in V7, as in versions before V3, you only need to do an npm i and all peerDependences should be automatically installed.
Cheat code helpful in this scenario and some others...
├── UNMET PEER DEPENDENCY @angular/[email protected]
├── UNMET PEER DEPENDENCY @angular/[email protected]
├── UNMET PEER DEPENDENCY @angular/[email protected]
├── UNMET PEER DEPENDENCY @angular/[email protected]
├── UNMET PEER DEPENDENCY @angular/[email protected]
├── UNMET PEER DEPENDENCY @angular/[email protected]
├── UNMET PEER DEPENDENCY @angular/[email protected]
├── UNMET PEER DEPENDENCY @angular/[email protected] >
- copy & paste your error into your code editor.
- Highlight an unwanted part with your curser. In this case
├── UNMET PEER DEPENDENCY - Press command + d a bunch of times.
- Press delete twice. (Press space if you accidentally highlighted
├── UNMET PEER DEPENDENCY) - Press up once. Add
npm install - Press down once. Add
--save - Copy your stuff back into the cli and run
npm install @angular/[email protected] @angular/[email protected] @angular/[email protected] @angular/[email protected] @angular/[email protected] @angular/[email protected] @angular/[email protected] @angular/[email protected] --save
I solved it by rewriting package.json with the exact values warnings were about.
Warnings when running npm:
npm WARN [email protected] requires a peer of es6-shim@^0.33.3 but none was installed.
npm WARN [email protected] requires a peer of [email protected]
In package.json, write
"es6-shim": "^0.33.3",
"reflect-metadata": "0.1.2",
Then, delete node_modules directory.
Finally, run the command below:
npm install
I experienced these errors when I was developing an npm package that had peerDependencies. I had to ensure that any peerDependencies were also listed as devDependencies. The project would not automatically use the globally installed packages.