Data path ”” should NOT have additional properties (es5BrowserSupport)

es5BrowserSupport add additional polyfill

Solution 1

For option es5BrowserSupport your @angular/cli required minimum version 7.3 and @angular-devkit/build-angular required minimum version 0.13 .

1. Check your @angular/cli version. if is less than 7.3 then run following command

   ng update @angular/cli

2. Check your @angular-devkit/build-angular version. if is less than 0.13 then run following command

   ng update @angular-devkit/build-angular

Solution 2

Also you can edit angular.json file and find "es5BrowserSupport": true and comment it. It will also work without updating dependency