How does environment variable injection work in ssr? Please provide docs

[zetti-caletti]

environment.ts

declare const WEBAPP_PUBLIC_HOSTNAME: string;
declare const HTTPS_ENABLED: string;

export const environment = {
    webappUrl: (HTTPS_ENABLED == 'true' ? 'https://' : 'http://') + WEBAPP_PUBLIC_HOSTNAME,
};

const webpack = require('webpack');

console.log('webpack.partial.js');
console.log({
    "WEBAPP_PUBLIC_HOSTNAME": JSON.stringify(process.env.WEBAPP_PUBLIC_HOSTNAME),
    "HTTPS_ENABLED": JSON.stringify(process.env.HTTPS_ENABLED),
});

module.exports = {
    plugins: [
        new webpack.DefinePlugin({
            "WEBAPP_PUBLIC_HOSTNAME": JSON.stringify(process.env.WEBAPP_PUBLIC_HOSTNAME),
            "HTTPS_ENABLED": JSON.stringify(process.env.HTTPS_ENABLED),
        })
    ]
}

"serve:ssr": "node dist/myproject/server/main.js",
"build:ssr": "ng build --extra-webpack-config webpack.partial.js && ng run myproject:server",

WEBAPP_PUBLIC_HOSTNAME=app.myproject.com HTTPS_ENABLED=true npm run build:ssr

WEBAPP_PUBLIC_HOSTNAME=app.myproject.com HTTPS_ENABLED=true npm run serve:ssr
ReferenceError: HTTPS_ENABLED is not defined

[zetti-caletti]

Got it to work. Had to put "extraWebpackConfig": "webpack.partial.js" under server.options in angular.json. Its poor documented.