<aura:attribute name="environmentType" type="String" description="This variable is used to indicate which environment this component is displayed on, f.i. community vs standard lightning" />

<design:attribute name="environmentType" label="Environment Type" datasource="Community,Standard" required="true" description="Please indicate which environment this component is hosted on."/>

var environment = component.get('v.environmentType');
if (environment == 'Community') {
    // Do Community logic
} else if (environment == 'Standard') {
    // Do Standard Lightning logic
}