class CanaryGate {
  constructor(apiKey: string, options?: CanaryGateOptions)
  init(): Promise<void>
  getFlag(key: string): FlagData | undefined
  getFlags(): FlagData[]
  isStale(): boolean
  getLastSyncAt(): string | null
  disconnect(): void
}

type CanaryGateOptions = {
  /** API base URL. Default: 'http://localhost:3001' */
  baseUrl?: string
  /** Environment slug. Defaults to the project default environment. */
  environment?: string
  /** Server environments only: enable real-time SSE streaming. Default: false */
  stream?: boolean
  /** Initial stream reconnect delay in ms. Default: 5000 */
  reconnectDelay?: number
  /** Maximum stream reconnect delay in ms. Default: 30000 */
  maxReconnectDelay?: number
  /** Time in ms without a server heartbeat before reconnecting the stream. Default: 65000 */
  heartbeatTimeoutMs?: number
}

type FlagData = BooleanFlagData | RolloutFlagData

type BooleanFlagData = {
  key: string
  type: 'boolean'
  enabled: boolean
}

type RolloutFlagData = {
  key: string
  type: 'rollout'
  enabled: boolean
  percent: number
}

const flag = canary.getFlag('new-dashboard')
 
if (flag?.type === 'rollout') {
  // TypeScript knows flag is RolloutFlagData here
  console.log(flag.percent)
}

import {
  CanaryGate,
  type CanaryGateOptions,
  type FlagData,
  type BooleanFlagData,
  type RolloutFlagData
} from '@canarygate/sdk/js/client'
 
// Both entry points export the same types:
import { type FlagData as ServerFlagData } from '@canarygate/sdk/js/server'