Function flushUntil

cli/src/cli/readline.test.ts:45–53

(predicate: () => boolean, maxTicks = 30)

                    set = new Set();
                    listeners.set(event, set);
                }
                set.add(listener);
            }),
            emit: (event: string, ...args: unknown[]) => {
                for (const listener of listeners.get(event) ?? []) {
                    listener(...args);
                }
            },
        };
        return stub as unknown as ReadlinePromisesInterface;
    }