I downgraded Angular to version 8, everything went fine and in the package.json the version is 8.2.0, but when I look from the console, the version is still 14.0.3.

package.json

{
  "name": "epg",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "prestart": "node aspnetcore-https",
    "start": "run-script-os",
    "start:windows": "ng serve --port 44498 --ssl --ssl-cert %APPDATA%\\ASP.NET\\https\\%npm_package_name%.pem --ssl-key %APPDATA%\\ASP.NET\\https\\%npm_package_name%.key",
    "start:default": "ng serve --port 44498 --ssl --ssl-cert $HOME/.aspnet/https/${npm_package_name}.pem --ssl-key $HOME/.aspnet/https/${npm_package_name}.key",
    "build": "ng build",
    "build:ssr": "ng run epg:server:dev",
    "watch": "ng build --watch --configuration development",
    "test": "ng test"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^8.2.0",
    "@angular/common": "^8.2.0",
    "@angular/compiler": "^8.2.0",
    "@angular/core": "^8.2.0",
    "@angular/forms": "^8.2.0",
    "@angular/platform-browser": "^8.2.0",
    "@angular/platform-browser-dynamic": "^8.2.0",
    "@angular/platform-server": "^8.2.0",
    "@angular/router": "^8.2.0",
    "bootstrap": "^5.1.3",
    "jquery": "^3.6.0",
    "oidc-client": "^1.11.5",
    "popper.js": "^1.16.0",
    "run-script-os": "^1.1.6",
    "rxjs": "~7.5.5",
    "tslib": "^2.4.0",
    "zone.js": "~0.11.6"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^8.2.0",
    "@angular/cli": "^8.2.0",
    "@angular/compiler-cli": "^8.2.0",
    "@types/jasmine": "~4.0.3",
    "@types/jasminewd2": "~2.0.10",
    "@types/node": "^18.0.0",
    "jasmine-core": "~4.2.0",
    "karma": "~6.4.0",
    "karma-chrome-launcher": "~3.1.1",
    "karma-coverage": "~2.2.0",
    "karma-jasmine": "~5.1.0",
    "karma-jasmine-html-reporter": "^2.0.0",
    "typescript": "~4.7.4"
  },
  "overrides": {
    "autoprefixer": "10.4.5"
  },
  "optionalDependencies": {}
}

To downgrade I followed the steps below: npm uninstall -g @angular/cli npm cache clean npm install -g @angular/[email protected] Did I do something wrong? How can I fix this error? Any tip will be appreciated!

CodePudding user response：

You just ran npm install -g @angular/[email protected] that downgraded you angular-cli only.

You missed deleting your existing node_modules folder, removing the package-lock.json if there is one, and you didn't run npm install that will re-install all your packages with specified version.

CodePudding user response：

You made the changes in global npm package but problem is the existing installed packages are still older version you can downgrade by two way

1. delete the node_modules folder and delete package-lock.json file and run npm install again.
2. if it's a new setup then regenerate the project with ng new-project name

personally prefer the second solution if you are setup a new project

CodePudding user response：

If you downgraded to lower version make sure to clear node modules and cache. you can try following steps:

1. Delete node modules using

$rm -rf node_modules

2. Delete package-lock.json

$ rm -rf package-lock.json

3. Clear npm cache.

$ npm cache clean -f

And then try to install again using

$npm i