Function awaitMatchingMount

The framework-free core of waitForMount, with the subscription injected so a test can drive the synchronous-initial-replay case that broke it.

awaitMatchingMount(
    subscribe: (listener: (mounts: SandboxMount[]) => void) => () => void,
    query: MountQuery,
    timeoutMs?: number,
): Promise<SandboxMount>
Parameters
- subscribe: (listener: (mounts: SandboxMount[]) => void) => () => void
- query: MountQuery
- OptionaltimeoutMs: number
Returns Promise<SandboxMount>
- Defined in src/mounts.ts:282