i have a new project which develop with angular 17 but now i need to downgrade to angular v16 so, i have a problem path. I update all version in package.json file but i don't get solution for this error. Do you have any idea for that ? I also check different topic about this subject in stackOverflow but i don't get solution.
npm run serve_proxy
> [email protected] serve_proxy
> ng serve --verbose --proxy-config proxy.config.json
Error: Schema validation failed with the following errors:
Data path "" must have required property 'browserTarget'.
{
"name": "car-angular",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build --base-href=.",
"build_prod": "ng build --configuration production --base-href=.",
"build_dev": "ng build --base-href=.",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e",
"install:clean": "rm -rf node_modules/ && rm -rf package-lock.json && npm install && npm start",
"serve_proxy": "ng serve --verbose --proxy-config proxy.config.json"
},
"private": true,
"dependencies": {
"@angular/animations": "^16.2.0",
"@angular/cdk": "^16.2.0",
"@angular/common": "^16.2.0",
"@angular/compiler": "^16.2.0",
"@angular/core": "^16.2.0",
"@angular/forms": "^16.2.0",
"@angular/material": "^16.2.0",
"@angular/platform-browser": "^16.2.0",
"@angular/platform-browser-dynamic": "^16.2.0",
"@angular/router": "^16.2.0",
"@costlydeveloper/ngx-awesome-popup": "^3.2.2",
"@fortawesome/angular-fontawesome": "^0.13.0",
"@fortawesome/fontawesome-svg-core": "^6.4.2",
"@fortawesome/free-solid-svg-icons": "^6.4.2",
"@ngrx/store": "^16.3.0",
"@ngrx/store-devtools": "^16.3.0",
"@ngx-translate/core": "^15.0.0",
"moment": "^2.30.1",
"ngrx-store-localstorage": "^16.0.0",
"primeicons": "^7.0.0",
"primeng": "^16.9.1",
"rxjs": "^7.8.1",
"tslib": "^2.3.0",
"zone.js": "~0.13.0"
},
"devDependencies": {
"@angular-devkit/build-angular": "^16.2.14",
"@angular/cli": "^16.2.0",
"@angular/compiler-cli": "^16.2.0",
"@types/jasmine": "~5.1.0",
"@types/node": "20.12.7",
"jasmine-core": "~5.1.0",
"karma": "~6.4.0",
"karma-chrome-launcher": "~3.2.0",
"karma-coverage": "~2.2.0",
"karma-jasmine": "~5.1.0",
"karma-jasmine-html-reporter": "~2.1.0",
"prettier": "^3.2.5",
"ts-node": "9.1.1",
"typescript": "^4.9.3"
}
}
{
"$schema": "../node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"car-angular": {
"projectType": "application",
"schematics": {
"@schematics/angular:component": {
"style": "scss",
"standalone": false
}
},
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:application",
"options": {
"outputPath": "dist/car-angular",
"index": "src/index.html",
"browser": "src/main.ts",
"polyfills": ["zone.js"],
"tsConfig": "tsconfig.app.json",
"inlineStyleLanguage": "scss",
"assets": ["src/favicon.ico", "src/assets"],
"styles": [
"@angular/material/prebuilt-themes/indigo-pink.css",
"src/styles.scss"
],
"scripts": []
},
"configurations": {
"production": {
"budgets": [
{
"type": "initial",
"maximumWarning": "500kb",
"maximumError": "2mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "2kb",
"maximumError": "6kb"
}
],
"outputHashing": "all"
},
"development": {
"optimization": false,
"extractLicenses": false,
"sourceMap": true,
"outputHashing": "media"
}
},
"defaultConfiguration": "production"
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
]
},
"development": {
"buildTarget": "car-angular:build:development"
}
},
"defaultConfiguration": "development"
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"buildTarget": "car-angular:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"polyfills": ["zone.js", "zone.js/testing"],
"tsConfig": "tsconfig.spec.json",
"inlineStyleLanguage": "scss",
"assets": ["src/favicon.ico", "src/assets"],
"styles": [
"@angular/material/prebuilt-themes/indigo-pink.css",
"src/styles.scss"
],
"scripts": []
}
}
}
}
},
"cli": {
"analytics": false
}
}
You also need to replace all styleUrl to styleUrls and make sure the property is an array and not a string
You have to rename all the "buildTarget" to "browserTarget" in the angular.json file.
{
"$schema": "../node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"car-angular": {
"projectType": "application",
"schematics": {
"@schematics/angular:component": {
"style": "scss",
"standalone": false
}
},
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:application",
"options": {
"outputPath": "dist/car-angular",
"index": "src/index.html",
"browser": "src/main.ts",
"polyfills": ["zone.js"],
"tsConfig": "tsconfig.app.json",
"inlineStyleLanguage": "scss",
"assets": ["src/favicon.ico", "src/assets"],
"styles": [
"@angular/material/prebuilt-themes/indigo-pink.css",
"src/styles.scss"
],
"scripts": []
},
"configurations": {
"production": {
"budgets": [
{
"type": "initial",
"maximumWarning": "500kb",
"maximumError": "2mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "2kb",
"maximumError": "6kb"
}
],
"outputHashing": "all"
},
"development": {
"optimization": false,
"extractLicenses": false,
"sourceMap": true,
"outputHashing": "media"
}
},
"defaultConfiguration": "production"
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
]
},
"development": {
"browserTarget": "car-angular:build:development"
}
},
"defaultConfiguration": "development"
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "car-angular:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"polyfills": ["zone.js", "zone.js/testing"],
"tsConfig": "tsconfig.spec.json",
"inlineStyleLanguage": "scss",
"assets": ["src/favicon.ico", "src/assets"],
"styles": [
"@angular/material/prebuilt-themes/indigo-pink.css",
"src/styles.scss"
],
"scripts": []
}
}
}
}
},
"cli": {
"analytics": false
}
}
Please find below stackblitz with a fresh angular 16 project for reference