Function planFlag

planFlag(
    explicit: string | null | undefined,
    envValue: string | null | undefined,
    paidDefault: boolean,
    env?: PlanEnv | null,
): boolean
Resolves a per-plan boolean through the override chain.
Parameters
- explicit: string | null | undefined
  the most specific signal, usually a request parameter; undefined/null/'' defer
- envValue: string | null | undefined
  an environment override; same three values defer
- paidDefault: boolean
  what the paid plan gets when nothing overrides
- Optionalenv: PlanEnv | null
  the environment carrying PLAN
  
  A present-but-empty string DEFERS rather than reading as false. That matters because url.searchParams.get() returns '' for ?prefill=, and treating that as an explicit "off" would make a stray ampersand silently change behaviour.
Returns boolean
- Defined in src/ops/plan.ts:32