channel()

channel(topic: string, params?: RealtimeChannelOptions): RealtimeChannel

创建或复用频道。SDK 会自动加上 realtime: 前缀；相同 topic 返回已有频道。

参数

topic

string

频道名，任意字符串

params

RealtimeChannelOptions

config可选object

broadcast

可选

{ ack?: boolean; self?: boolean; replay?: { since: number; limit?: number } }

Broadcast 选项

presence

可选

{ key?: string; enabled?: boolean }

Presence 选项

private

可选

boolean

是否私有频道（走 RLS）

postgres_changes_options

可选

{ wait?: boolean; timeout?: number }

CDC 订阅确认选项

返回

RealtimeChannel

RealtimeChannel

频道实例

示例

const channel = realtime.channel("room", {
  config: {
    private: false,
    broadcast: { self: true },
    presence: { key: "user-1" },
  },
});