Question

与调用 server.events.on() 并将 count 选项设置为 1 相同。

返回值: none.

const Hapi = require('hapi');

async function example() {

  const server = Hapi.server({ port: 80 });
  server.event('test');
  server.events.once('test', (update) => console.log(update));
  await server.events.emit('test', 'hello');
  await server.events.emit('test', 'hello');     // Ignored
}