src/types/apollo-client-devtools/src/backend/hook.d.ts
export function installHook(window: Window, devToolsVersion: string): void
export interface Hook {
ApolloClient: unknown
actionLog: string[]
devToolsVersion: string
on(event: string, fn: (...args: unknown[]) => void): void
once(event: string, fn: (...args: unknown[]) => void): void
off(event: string, fn: (...args: unknown[]) => void): void
emit(event: string): void
}