es5BrowserSupport by Angular

Question

I have updated my Angular CLI, with version 10.0.5 (globally and locally both) And while I am trying to build my angular project by below command-

ng build

I am getting below error-

Schema validation failed with the following errors: Data path "" should NOT have additional properties(es5BrowserSupport).

While I explored this error I found that-

@angular/cli required minimum version 7.3 & @angular-devkit/build-angular required minimum version 0.13

But I think I have the updated versions because I re-checked and it was showing I already have the updated versions of both the packages.

FYI..I can't comment this option (es5BrowserSupport : true) in Angular.json, I want to keep this because if I comment this option it's giving other issues.

Now I am not understanding what I am doing wrong here. Can anyone suggest some way to resolve this? Because currently I am unable to run my project because of this issue.

FYI, my old Angular CLI version was-

@angular/cli": "^8.3.20"

Answer 1

The property es5BrowserSupport was deprecated and has been removed.

The inclusion for ES5 polyfills will be determined from the browsers listed in the browserslist configuration.

BREAKING CHANGE
Deprecated browser builder option es5BrowserSupport has been removed. The inclusion for ES5 polyfills will be determined from the browsers listed in the browserslist configuration.

https://github.com/angular/angular-cli/pull/17484