wp-calypso/client/state/current-user/constants.js

export const DOMAINS_WITH_PLANS_ONLY = 'calypso_domains_with_plans_only';
export const NON_PRIMARY_DOMAINS_TO_FREE_USERS = 'calypso_allow_nonprimary_domains_without_plan';

export const MARKETING_PRICE_GROUP_2020_Q2_TEST_1 = 'price_2020_q2_test_1';