Overview The defineConfig() function wraps the entire revstack.config.ts export to provide full type inference and autocomplete for your billing configuration. It’s an identity function that returns the input as-is while preserving type information.
Function Signature function defineConfig < T extends RevstackConfig >( config : T ) : T
Type Parameters The configuration type. Must extend RevstackConfig.
Parameters The complete billing configuration object containing features, plans, addons, and coupons. features
Record<string, FeatureDefInput>
required
Dictionary of all available features, keyed by slug.
plans
Record<string, PlanDefInput>
required
Dictionary of all plans, keyed by slug.
addons
Record<string, AddonDefInput>
Dictionary of available add-ons, keyed by slug.
Array of available coupons/discounts.
Returns The same configuration object passed in, with full type inference preserved.
Usage Basic Configuration import { defineConfig , defineFeature , definePlan } from "@revstack/core" ; export default defineConfig ({ features: { seats: defineFeature ({ name: "Seats" , type: "static" , unit_type: "count" , }), storage: defineFeature ({ name: "Storage" , type: "metered" , unit_type: "bytes" , }), } , plans: { starter: definePlan ({ name: "Starter" , is_default: true , is_public: true , type: "free" , features: { seats: { value_limit: 3 }, storage: { value_limit: 5_000_000_000 }, // 5 GB }, }), pro: definePlan ({ name: "Pro" , is_default: false , is_public: true , type: "paid" , features: { seats: { value_limit: 10 }, storage: { value_limit: 100_000_000_000 }, // 100 GB }, prices: [ { amount: 2900 , currency: "USD" , billing_interval: "monthly" , }, ], }), } , }) ;
With Add-ons and Coupons import { defineConfig , defineFeature , definePlan , defineAddon , defineDiscount } from "@revstack/core" ; export default defineConfig ({ features: { seats: defineFeature ({ name: "Team Seats" , type: "static" , unit_type: "count" , }), } , plans: { // ... your plans } , addons: { extra_seats: defineAddon ({ name: "Extra Seats (5)" , type: "recurring" , amount: 500 , currency: "USD" , billing_interval: "monthly" , features: { seats: { value_limit: 5 , type: "increment" , }, }, }), } , coupons: [ defineDiscount ({ code: "LAUNCH50" , name: "Launch Special - 50% Off" , type: "percent" , value: 50 , duration: "repeating" , duration_in_months: 3 , max_redemptions: 100 , }), ] , }) ;
Source Location : packages/core/src/define.ts:98-100