Performance Optimization

import { readScenario } from '@mockmaster/cli'
import type { Scenario } from '@mockmaster/msw-adapter'
 
class ScenarioCache {
  private cache = new Map<string, Scenario>()
 
  async get(dir: string, name: string): Promise<Scenario> {
    const key = `${dir}/${name}`
 
    if (this.cache.has(key)) {
      return this.cache.get(key)!
    }
 
    const scenario = await readScenario(dir, name)
    this.cache.set(key, scenario)
    return scenario
  }
 
  clear() {
    this.cache.clear()
  }
}
 
export const scenarioCache = new ScenarioCache()

// Sequential - slow
const scenario1 = await readScenario('./scenarios', 'users')
const scenario2 = await readScenario('./scenarios', 'products')
 
// Parallel - fast
const [scenario1, scenario2] = await Promise.all([
  readScenario('./scenarios', 'users'),
  readScenario('./scenarios', 'products')
])