declare module '../src/ledger.mjs' {
  export const MICRO: number
  export function priceCall(usage: Record<string, number | undefined>, rates: unknown): number
  export function periodKey(period: string, now?: number): string
  export function decide(input: Record<string, unknown>): { action: 'allow' | 'downgrade' | 'block'; reason?: string; model?: string; spentMicros: number; limitMicros: number; fraction: number }
  export function report(store: unknown, opts?: { limitMicros?: number }): unknown
  export function resolveScope(options: unknown, config?: unknown): { scope: string; kind: string }
  export function limitFor(scope: string, opts?: { limitMicros?: number; perScopeLimitMicros?: Record<string, number | null> }): number
  export class SpendStore {
    constructor(path: string | null)
    get(scope: string, key: string): number
    add(scope: string, key: string, micros: number): void
    entries(): Record<string, { micros: number; updated: string }>
  }
}