vs 2019 how to publish angular environment.prod code example

Example: vs 2019 how to publish angular environment prod

<Exec WorkingDirectory="$(SpaRoot)" Command="npm run build-prod" Condition="'$(Configuration)' == 'Release'" />
<Exec WorkingDirectory="$(SpaRoot)" Command="npm run build-staging" Condition="'$(Configuration)' == 'Staging'" />