Npm WARN … requires a peer of … but none is installed. You must install peer dependencies yourself (2023)

Answer : 1

You can use npm-install-peers to find and codings2day help angular install required peer dependencies.,The codings2day help angular automatic installation of peer dependencies codings2day help angular was explicitly removed with npm 3.,This is codings2day help angular the alternative of npm install -g codings2day help angular npm-install-peers

Use following for each peer dependency to install that and remove the error

npm install --save-dev xxxxx

For each error of the form:

npm WARN {something} requires a peer of {other thing} but none is installed. You must install peer dependencies yourself.

You should:

$ npm install --save-dev "{other thing}"

Note: The quotes are needed if the {other thing} has spaces, like in this example:

npm WARN rollup-plugin-uglify@6.0.3 requires a peer of rollup@>=0.66.0 <2 but none was installed.

Resolved with:

$ npm install --save-dev "rollup@>=0.66.0 <2"

The accepted answer of using npm-install-peers did not work, nor removing node_modules and rebuilding. The answer to run

npm install --save-dev @xxxxx/xxxxx@latest

I had a similar issue and solved after running these instructions!

npm install npm -g
npm install --save-dev @angular/cli@latest
npm install
npm start

npm install -g npm-install-peers

In my case following commands worked for me:

sudo npm cache clean --force
sudo npm install -g npmsudo apt install libssl1.0-dev
sudo apt install nodejs-dev
sudo apt install node-gyp
sudo apt install npm

After that if you are facing "Cannot find module 'bcrypt' then for that you can resolve this one with below commands:

npm install node-gyp -g
npm install bcrypt -g
npm install bcrypt --save

Answer : 2

npm i install-peers -D

npm install --save-dev xxxxx
# Eg
npm install --save-dev tslint@^5.0.0

npm install --save-dev xxxxx

Answer : 3

I feel like my comments aren't event codings2day help angular being read. Let me repeat...,@krishna217 I codings2day help angular don't see @angular/material and @angular/cdk codings2day help angular ? Did you miss those packages ?,@h2qutc Any codings2day help angular progress on this ? Also while upgrading to codings2day help angular angular 10 it throws an error due to these codings2day help angular incompatible dependencies.

Quick Start

# If you're using npm
npm install -g install-peerdeps# If you're using yarn
yarn global add install-peerdeps
cd my-project-directory
install-peerdeps <package>[@<version>]

It's true that on Linux you can run something like this to automatically install peerDeps (taken from AirBnb's eslint config repo):

(
 export PKG=eslint-config-airbnb;
 npm info "$PKG@latest" peerDependencies --json | command sed 's/[\{\},]//g ; s/: /@/g' | xargs npm install --save-dev "$PKG@latest"
)

Usage

Usage: install-peerdeps <package>[@<version>], default version is 'latest'Installs the specified package along with correct peerDeps.
Options:
 -V, --version output the version number
 -D Install the package as a devDependency (alias for `-d`)
 -d, --dev Install the package as a devDependency
 -g, --global Install the package globally
 -o, --only-peers Install only peerDependencies of the package
 -S, --silent If using npm, don't save in package.json
 -Y, --yarn Install with Yarn
 -P, --pnpm Install with pnpm
 -n, --no-registry Do not use a remote registry to find dependencies list
 --dry-run Do not install packages, but show the install command that will be run
 -x, --extra-args "<extra_args>" Extra arguments to pass through to NPM or Yarn
 -h, --help output usage information

install-peerdeps will automatically detect whether you're using Yarn. If you are, it'll prompt you as to whether you want to use Yarn or npm to install the packages.

# If you're using npm
npm install eslint-config-airbnb eslint@^3.9.1 eslint-plugin-jsx-a11y@^2.2.3 eslint-plugin-import@^2.1.0 eslint-plugin
-react@^6.6.0 --save-dev# If you're using yarn
yarn add eslint-config-airbnb eslint@^3.9.1 eslint-plugin-jsx-a11y@^2.2.3 eslint-plugin-import@^2.1.0 eslint-plugin
-react@^6.6.0 --dev

The tool will automatically install the version corresponding to the tag, as well as its peer dependencies:

...
Installing peerdeps for @angular/core@4.0.0-beta.1.
yarn add @angular/core rxjs@^5.0.1 zone.js@^0.7.2yarn add v0.18.1
...

Answer : 6

Error and failed while installing through codings2day help angular npm,Introducing BoldSign : Free e-signature codings2day help angular software and API by codings2day help angular Syncfusion.,PlatformAngular - EJ 2

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 PlZ SOLVED THESE QURIES

Answer : 7

Peer dependencies are defined by the codings2day help angular packages.,As a rule of thumb will your codings2day help angular program function better/ be faster or codings2day help angular something if you install them?

I'm updating some npm packages and receiving the warnings below, but my program runs without them so what benefit do I gain by installing them? If I just ignore these will I receive some sort of penalty?

npm WARN notsup Unsupported engine for watchpack-chokidar2@2.0.0: wanted: {"node":"<8.10.0"} (current: {"node":"14.4.0","npm":"6.14.4"})
npm WARN notsup Not compatible with your version of node/npm: watchpack-chokidar2@2.0.0
npm WARN u/pmmmwh/react-refresh-webpack-plugin@0.3.3 requires a peer of react-refresh@^0.8.2 but none is installed. You must install peer dependencies yourself.
npm WARN acorn-dynamic-import@4.0.0 requires a peer of acorn@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN babel-plugin-apply-mdx-type-prop@2.0.0-next.7 requires a peer of u/babel/core@^7.10.5 but none is installed. You must install peer dependencies yourself.
npm WARN bootstrap@4.5.0 requires a peer of popper.js@^1.16.0 but none is installed. You must install peer dependencies yourself.
npm WARN gatsby-interface@0.0.166 requires a peer of gatsby@2.6.0 but none is installed. You must install peer dependencies yourself.
npm WARN gatsby-interface@0.0.166 requires a peer of react@16.8.1 but none is installed. You must install peer dependencies yourself.
npm WARN gatsby-interface@0.0.166 requires a peer of react-dom@16.8.1 but none is installed. You must install peer dependencies yourself.
npm WARN theme-ui@0.2.52 requires a peer of u/mdx-js/react@^1.0.0 but none is installed. You must install peer dependencies yourself.

Answer : 8

Container codings2day help angular Registry , Operations Operations Metrics Incidents Environments

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 PlZ SOLVED THESE QURIES

Answer : 9

Just add --next flag as Angular 11 codings2day help angular version is in pre release state.,First I ran codings2day help angular ng update @angular/cli. And it got codings2day help angular succeeded.,After that I found our that codings2day help angular it’s related node_modules, so I ran npm codings2day help angular install command.

Just run ng update it will suggest the necessary steps as shown below.

Using package manager: 'npm'
Collecting installed dependencies...
Found 30 dependencies.
 We analyzed your package.json, there are some packages to update: Name Version Command to update
 --------------------------------------------------------------------------------
 @angular/cli 11.0.0-next.2 -> 11.0.0 ng update @angular/cli
 @angular/core 11.0.0-next.2 -> 11.0.0 ng update @angular/core
 There might be additional packages which don't provide 'ng update' capabilities that are outdated.
 You can update the addition packages by running the update command of your package manager.

First I ran ng update @angular/cli. And it got succeeded.

Installing packages for tooling via npm.
Installed packages for tooling via npm.
Using package manager: 'npm'
Collecting installed dependencies...
Found 30 dependencies.
Fetching dependency metadata from registry...
 Updating package.json with dependency @angular-devkit/build-angular @ "0.1100.0" (was "0.1100.0-next.2")...
 Updating package.json with dependency @angular/cli @ "11.0.0" (was "11.0.0-next.2")...
 Updating package.json with dependency karma @ "5.1.1" (was "5.0.9")...
 UPDATE package.json (1361 bytes)
√ Packages installed successfully.
** Executing migrations of package '@angular/cli' **> Remove deprecated options from 'angular.json' that are no longer present in v11.
 Migration completed.

After running ng update @angular/core I got following errors it’s failed to upgrate to Angular 11 version.

Using package manager: 'npm'
Collecting installed dependencies...
Found 30 dependencies.
Fetching dependency metadata from registry...
 Package "codelyzer" has an incompatible peer dependency to "@angular/compiler" (requires ">=2.3.1 <10.0.0 || >9.0.0-beta <10.0.0 || >9.1.0-beta <10.0.0 || >9.2.0-beta <10.0.0" (extended), would install "11.0.0").
 Package "codelyzer" has an incompatible peer dependency to "@angular/core" (requires ">=2.3.1 <10.0.0 || >9.0.0-beta <10.0.0 || >9.1.0-beta <10.0.0 || >9.2.0-beta <10.0.0" (extended), would install "11.0.0").
× Migration failed: Incompatible peer dependencies found.
Peer dependency warnings when installing dependencies means that those dependencies might not work correctly together.
You can use the '--force' option to ignore incompatible peer dependencies and instead address these warnings later.
 See "C:\Users\arunkumarg\AppData\Local\Temp\ng-9s5fCf\angular-errors.log" for further details.

The first step I did to fix the error is to run command with –force flag.

ng update @angular/core --force

Then I ran ng update @angular/core command. It got succeeded.

Using package manager: 'npm'
Collecting installed dependencies...
Found 30 dependencies.
Fetching dependency metadata from registry...
Package '@angular/core' is already up to date.

After the update please verify the Angular 11 version update by running ng version command.

 _ _ ____ _ ___
 / \ _ __ __ _ _ _| | __ _ _ __ / ___| | |_ _|
 / △ \ | '_ \ / _` | | | | |/ _` | '__| | | | | | |
 / ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | |
 /_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___|
 |___/Angular CLI: 11.0.0
Node: 10.16.0
OS: win32 x64
Angular: 11.0.0
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1100.0
@angular-devkit/build-angular 0.1100.0
@angular-devkit/core 11.0.0
@angular-devkit/schematics 11.0.0
@schematics/angular 11.0.0
@schematics/update 0.1100.0
rxjs 6.6.3
typescript 4.0.3

If your application is in Angular 10 and want to update it to Angular 11 you can use following ng update command to upgrate to version 11 of Angular.

ng update --next

The command will update the app to Angualr 11 or suggest steps to update it to Angular 11.

Installing packages for tooling via npm.
Installed packages for tooling via npm.
Using package manager: 'npm'
Collecting installed dependencies...
Found 3 dependencies.
 We analyzed your package.json, there are some packages to update: Name Version Command to update
 --------------------------------------------------------------------------------
 @angular/cli 10.1.2 -> 11.0.0-next.2 ng update @angular/cli --next
 @angular/core 10.1.2 -> 11.0.0-next.2 ng update @angular/core --next

So we need to update Angular cli to the version 11.0.0-next.2 version

 ng update @angular/cli@11.0.0-next.2 --force

As Angular 11 is in pre release state, its better to add version to the command.

Using package manager: 'npm'
Collecting installed dependencies...
Found 30 dependencies.
Fetching dependency metadata from registry...
 Package "codelyzer" has an incompatible peer dependency to "@angular/compiler" (requires ">=2.3.1 <10.0.0 || >9.0.0-beta <10.0.0 || >9.1.0-beta <10.0.0 || >9.2.0-beta <10.0.0" (extended), would install "11.0.0-next.2").
 Package "codelyzer" has an incompatible peer dependency to "@angular/core" (requires ">=2.3.1 <10.0.0 || >9.0.0-beta <10.0.0 || >9.1.0-beta <10.0.0 || >9.2.0-beta <10.0.0" (extended), would install "11.0.0-next.2").
 Updating package.json with dependency @angular-devkit/build-angular @ "0.1100.0-next.2" (was "0.1001.2")...
 Updating package.json with dependency @angular/cli @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/compiler-cli @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/language-service @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/animations @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/common @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/compiler @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/core @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/forms @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/platform-browser @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/platform-browser-dynamic @ "11.0.0-next.2" (was "10.1.2")...
 Updating package.json with dependency @angular/router @ "11.0.0-next.2" (was "10.1.2")...
UPDATE package.json (1375 bytes)
√ Packages installed successfully.
** Executing migrations of package '@angular/cli' **> Replace deprecated library builder '@angular-devkit/build-ng-packagr'.
 Migration completed.
> Remove deprecated options from 'angular.json' that are no longer present in v11.
UPDATE angular.json (3577 bytes)
 Migration completed.