How to config different development environment in Angular 2 app

Question

I have a constant file

export class constants {
    public static get API_ENDPOINT(): string { return \'https://dvelopment-server/\'; }
}

Answer 1

export class endPointconfig {

    public static getEnvironmentVariable() {
        let origin = location.origin;
        let path = location.href.split('/')[3];
        let value = origin +'/'+ path + '/api/';`enter code here`       
        return value;
    }
}