Function checkInstallable

checkInstallable(
    fetcher: (url: string) => Promise<Response>,
    name: string,
    installed: Record<string, string>,
    platform?: PlatformVersions,
    constraint?: string,
    stability?: string,
): Promise<InstallVerdict>
The whole check: one fetch, then arithmetic.
Parameters
- fetcher: (url: string) => Promise<Response>
  injected so a test runs without network and a caller can pass a cache-wrapped fetch (p2 payloads are immutable per version)
- name: string
- installed: Record<string, string>
- platform: PlatformVersions = DEFAULT_PLATFORM
- Optionalconstraint: string
- Optionalstability: string
Returns Promise<InstallVerdict>
- Defined in src/ops/packagist.ts:311