'Error: Schema validation failed with the following errors: Data path "" should NOT have additional properties(project)
After migrating application from angular 5 to 6, on running ng serve the following errors pop up.
Schema validation failed with the following errors: Data path "" should NOT have additional properties(project). Error: Schema validation failed with the following errors: Data path "" should NOT have additional properties(project). at MergeMapSubscriber._registry.compile.pipe.operators_1.concatMap.validatorResult [as project] (.../TemplateApp/me-cmf-web-template-angular/node_modules/@angular-devkit/core/src/workspace/workspace.js:210:42) at MergeMapSubscriber._tryNext (/.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:65:27) at MergeMapSubscriber._next (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:55:18) at MergeMapSubscriber.Subscriber.next (/home/training/Attinad_Projects/TemplateApp/me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:64:18) at MergeMapSubscriber.notifyNext (.../TemplateApp/me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:84:26) at InnerSubscriber._next (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/InnerSubscriber.js:25:21) at InnerSubscriber.Subscriber.next (/.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:64:18) at MapSubscriber._next (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/map.js:52:26) at MapSubscriber.Subscriber.next (/.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:64:18) at SwitchMapSubscriber.notifyNext (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/switchMap.js:77:26)
I assume that the error is with .angular.json file which I re-named from .angular-cli.json .
My .angular.json file is as follows :
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"project": {
"name": "mediaweb"
},
"apps": [{
"root": "src",
"outDir": "dist/browser",
"assets": [
"assets",
"favicon.ico"
],
"index": "index.html",
"main": "main.ts",
"polyfills": "polyfills.ts",
"test": "test.ts",
"tsconfig": "tsconfig.app.json",
"testTsconfig": "tsconfig.spec.json",
"prefix": "app",
"styles": [
"styles.scss",
"../node_modules/owl.carousel/dist/assets/owl.carousel.css",
"../node_modules/owl.carousel/dist/assets/owl.theme.default.css",
"../node_modules/video.js/dist/video-js.css"
],
"scripts": [
"../node_modules/jquery/dist/jquery.js",
"../node_modules/owl.carousel/dist/owl.carousel.js",
"../node_modules/video.js/dist/ie8/videojs-ie8.js",
"../node_modules/video.js/dist/video.js"
],
"environmentSource": "environments/environment.ts",
"environments": {
"dev": "environments/environment.dev.ts",
"prod": "environments/environment.prod.ts"
}
},
{
"platform": "server",
"root": "src",
"outDir": "dist/server",
"assets": [
"assets",
"favicon.ico"
],
"index": "index.html",
"main": "main.server.ts",
"test": "test.ts",
"tsconfig": "tsconfig.server.json",
"testTsconfig": "tsconfig.spec.json",
"prefix": "app",
"styles": [
"styles.scss"
],
"scripts": [],
"environmentSource": "environments/environment.ts",
"environments": {
"dev": "environments/environment.dev.ts",
"prod": "environments/environment.prod.ts"
}
}
],
"e2e": {
"protractor": {
"config": "./protractor.conf.js"
}
},
"lint": [{
"project": "src/tsconfig.app.json",
"exclude": ["**/node_modules/**", "**/UI/**"]
},
{
"project": "src/tsconfig.spec.json",
"exclude": "**/node_modules/**"
},
{
"project": "e2e/tsconfig.e2e.json",
"exclude": "**/node_modules/**"
}
],
"test": {
"karma": {
"config": "./karma.conf.js"
}
},
"defaults": {
"styleExt": "scss",
"component": {}
}
}
Should I re-structure the json file, if so how?.
Any help would be great.
Solution 1:[1]
The issue is generally because of a version mismatch in your package.json file.
In my Angular 7 app, I have changed "@angular-devkit/build-angular": "^0.800.2" to "@angular-devkit/build-angular": "~0.7.0".
Then I ran the command npm install after deleting node_modules.
Aside: Use ^ carefully. Your working code may not work in the future if there is a major change in the package used.
Solution 2:[2]
my app is on angular 7.2.3
remove "es5BrowserSupport": true from angular.json. and npm start now works.
Solution 3:[3]
When i was getting version error issues,Following command worked for me:
First run:
npm update
Second run:
ng update
Third run: (It will update all the mismatching packages)
ng update --all --force
Solution 4:[4]
First:
npm uninstall @angular-devkit/build-angular
Next:
npm install @angular-devkit/[email protected]
Solution 5:[5]
Angular Upgrade from 9 to 10 is very easy (all additional detail-information is here: https://update.angular.io/?v=9.0-10.0) :
Make sure your package file is in version control and all changes have been committed. This will overwrite your package file. Better you try it in a new experimental branch.
npm install -g npm-check-updates
ncu -u
ng update --all --force
In the new schema, it is no longer allowed to use the key es5BrowserSupport; remove the following line in your angular.json:
"es5BrowserSupport": true
then simply start your application anew:
npm start
Solution 6:[6]
Change package.json from:
"@angular-devkit/build-angular": "^0.13.5",
to:
"@angular-devkit/build-angular": "^0.12.1",
Solution 7:[7]
just go to the angular.json file and remove
"extractCss": true
on the
production section.
Solution 8:[8]
the format of angular.json needs to be as per Angular6... You can check my angular.json below or create a new project in Angular6 and then check the format of the 'project' head
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"homePage6": {
"root": "",
"sourceRoot": "src",
"projectType": "application",
"prefix": "app",
"schematics": {
"@schematics/angular:component": {
"styleext": "scss"
}
},
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/homePage6",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.app.json",
"assets": [
"src/favicon.ico",
"src/assets",
"src/manifest.json"
],
"styles": [
"src/styles.scss"
],
"scripts": []
},
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"aot": true,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"serviceWorker": true
}
}
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "homePage6:build"
},
"configurations": {
"production": {
"browserTarget": "homePage6:build:production"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "homePage6:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.spec.json",
"karmaConfig": "src/karma.conf.js",
"styles": [
"styles.scss"
],
"scripts": [],
"assets": [
"src/favicon.ico",
"src/assets",
"src/manifest.json"
]
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"src/tsconfig.app.json",
"src/tsconfig.spec.json"
],
"exclude": [
"**/node_modules/**"
]
}
}
}
},
"homePage6-e2e": {
"root": "e2e/",
"projectType": "application",
"architect": {
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "homePage6:serve"
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": "e2e/tsconfig.e2e.json",
"exclude": [
"**/node_modules/**"
]
}
}
}
}
},
"defaultProject": "homePage6"
}I ran into similar (not identical, but also in angular.json) issue:
Schema validation failed with the following errors: Data path "['server']" should NOT have additional properties(scripts). Error: Schema validation failed with the following errors: Data path "['server']" should NOT have additional properties(scripts). at MergeMapSubscriber._registry.compile.pipe.operators_1.concatMap.validatorResult [as project] (D:\Angular7\uHome\node_modules@angular-devkit\core\src\workspace\workspace.js:215:42) at MergeMapSubscriber._tryNext (D:\Angular7\uHome\node_modules\rxjs\internal\operators\mergeMap.js:69:27) at MergeMapSubscriber._next (D:\Angular7\uHome\node_modules\rxjs\internal\operators\mergeMap.js:59:18) at MergeMapSubscriber.Subscriber.next (D:\Angular7\uHome\node_modules\rxjs\internal\Subscriber.js:67:18) at MergeMapSubscriber.notifyNext (D:\Angular7\uHome\node_modules\rxjs\internal\operators\mergeMap.js:92:26) at InnerSubscriber._next (D:\Angular7\uHome\node_modules\rxjs\internal\InnerSubscriber.js:28:21) at InnerSubscriber.Subscriber.next (D:\Angular7\uHome\node_modules\rxjs\internal\Subscriber.js:67:18) at MapSubscriber._next (D:\Angular7\uHome\node_modules\rxjs\internal\operators\map.js:55:26) at MapSubscriber.Subscriber.next (D:\Angular7\uHome\node_modules\rxjs\internal\Subscriber.js:67:18) at SwitchMapSubscriber.notifyNext (D:\Angular7\uHome\node_modules\rxjs\internal\operators\switchMap.js:86:26)
had to remove the property scripts from my angular.json... sharing this information to help someone in the future.
Solution 9:[9]
Updating npm and angular fixed mine:
Assuming you use npm
npm update
then run:
ng update
NB: You might be prompted to update individual dependencies. In my case, I was prompted to run:
ng update @angular/cli and ng update @angular/core.
Solution 10:[10]
When upgrading Angular from version 8 to 10 I got very similar error, namely Schema validation failed with the following errors: Data path "" should NOT have additional properties(serverTarget)..
The solution was remove all "serverTarget" references from below "serve". The below was wrong:
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "my_app:build"
"serverTarget": "my_app:server"
},
"configurations": {
"production": {
"browserTarget": "my_app:build:production",
"serverTarget": "my_app:server:production"
}
}
},
The below is correct and compiled successfully:
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "my_app:build"
},
"configurations": {
"production": {
"browserTarget": "my_app:build:production"
}
}
},
Bonus for those who are working with Angular Universal. If you want to run SSR on localhost, then indeed you need the serverTarget. However, for that you have to create a new section within the angular.json, something like:
"serve-ssr": {
"builder": "@nguniversal/builders:ssr-dev-server",
"options": {
"browserTarget": "my_app:build",
"serverTarget": "my_app:server"
},
"configurations": {
"production": {
"browserTarget": "my_app:build:production",
"serverTarget": "my_app:server:production"
}
}
},
Then ng run my_app:serve-ssr.
Actually I got this error when upgrading Angular from version 10 into 8 and wanted to improve some things. Then I've messed up the serverTarget thing with that wrong thinking, hopefully this will help out someone with Angular Universal in a project.
Solution 11:[11]
This error also shows when we add some properties that are not supported in the angular.json configuration
The Angular application we create must be listed under the projects properties (with a 's'), but in this case it is under project
The top level properties are listed here
Solution 12:[12]
I think it's with RxJS's incompatibility. You should install rxjs-compat to fix this.
npm install rxjs-compat
Also, the name of the file is angular.json and not .angular.json
Solution 13:[13]
go to package.json and change the version of @angular-devkit/build-angular as follows:
@angular-devkit/build-angular": "^0.12.4"
Solution 14:[14]
Remove these two lines from the angular.json file:
"vendorSourceMap":"true",
"evalSourceMap":"true".
Solution 15:[15]
removing the flag es5BrowserSupport: true from angular.json fixed the problem.
Since I was updating from Angular7 to Angular11, I skipped a point from https://update.angular.io/ upgrade guide.
Remove any es5BrowserSupport flags in your angular.json and set your target to es2015 in your tsconfig.json. Angular now uses your browserslist to determine if an ES5 build is needed. ng update will migrate you automatically.
Solution 16:[16]
I just deleted the node_module folder and run
NPM Install
and it worked fine for me.
It is an Angular 9 solution.
Solution 17:[17]
After trying everything that are written above, it still didn't work. Until, I rebooted my system. Add this to your last resort.
- Reboot system
Solution 18:[18]
just remove node_modules and do npm i sometimes some packages don't compile well, when you switch from one version to another version
Solution 19:[19]
please check your "angular/cli" version in "package.json", the version number must be similar to other angular packages.
"devDependencies": {
"@angular-devkit/build-angular": "~0.803.29",
"@angular/cli": "~13.2.2", (this is the wrong one)
"@angular/compiler-cli": "~8.2.14",
Solution 20:[20]
In my project I was using a relative import in one of the files to another library outside the scope of ng-packagr (../another-lib). After changing to a module import (@scope/another-lib) it worked.
Sources
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Source: Stack Overflow